File: HISTORY-1_0-1_8_0_rc3.txt

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HDF5 HISTORY
============
This file contains history of the HDF5 libraries releases starting with
HDF5-1.0.0 and ending with HDF5-1.8.0-rc3 (the state of the code before i
the HDF5 1.8.0 release).

CONTENTS

22.     Changes from 1.6.0 to 1.8.0-rc3
21.     Release Information for hdf5-1.6.7
20.     Release Information for hdf5-1.6.6
19.     Release Information for hdf5-1.6.5
18.     Release Information for hdf5-1.6.4
17.     Release Information for hdf5-1.6.3
16.     Release Information for hdf5-1.6.2
15.     Release Information for hdf5-1.6.1
14.     Release Information for hdf5-1.6.0
13.     Release Information for hdf5-1.4.5
12.     Release Information for hdf5-1.4.4
11.     Release Information for hdf5-1.4.3
10.     Release Information for hdf5-1.4.2
9.      Release Information for hdf5-1.4.1
8.      Release Information for hdf5-1.4.0
7.      Release Information for hdf5-1.2.2
6.      Release Information for hdf5-1.2.1
5.      Release Information for hdf5-1.2.0
4.      Changes from Release 1.0.0 to Release 1.0.1
3.      Changes from the Beta 1.0.0 Release to Release 1.0.0
2.      Changes from the Second Alpha 1.0.0 Release to the Beta 1.0.0 Release
1.      Changes from the First Alpha 1.0.0 Release to the 
                Second Alpha 1.0.0 Release

[Search on the string '%%%%' for per-release section breaks.]

%%%%1.8.0-rc3%%%%   Changes from 1.6.0 to 1.8.0-rc3


HDF5 version 1.8.0-rc3 
================================================================================


INTRODUCTION

This document describes the differences between HDF5-1.6.* and
Hdf5 1.8.0 release candidate "HDF5-1.8.0-rc3", and contains information 
on the platforms tested and known problems in HDF5-1.8.0-rc3. 
For more details check the HISTORY.txt file in the HDF5 source.


Links to HDF5 1.8.0-rc3 source code, documentation, and additional materials
can be found on THG's development server (www.hdfgroup.uiuc.edu) at the
following location:
     http://www.hdfgroup.uiuc.edu/HDF5/release/beta/obtain518.html
User documentation for the beta can be accessed directly at this location: 
     http://www.hdfgroup.uiuc.edu/HDF5/doc_1.8pre/doc/

New features of the upcoming 1.8.0 release are described in
the "What's New in 1.8.0?" document:
     http://www.hdfgroup.uiuc.edu/HDF5/doc_1.8pre/WhatsNew180.html

New and modified APIs are described briefly in
     http://www.hdfgroup.uiuc.edu/HDF5/doc_1.8pre/WhatsNew180.html
and will be listed in the "HDF5 Software Changes" document:
     http://www.hdfgroup.uiuc.edu/HDF5/doc_1.8pre/doc/ADGuide/Changes.html



For more information, see the HDF5 home page:
   
    http://www.hdfgroup.org/HDF5/

If you have any questions or comments, please send them to the HDF Help Desk:

    help@hdfgroup.org


CONTENTS

- New Features
- Support for new platforms and languages
- Bug Fixes since HDF5-1.6.0
- Platforms Tested
- Known Problems


New Features
============

    Configuration:
    --------------
        - Removed stream-vfd from the HDF5 library. - AKC 2007/11/19.
        - Updated versions of autotools. HDF5 now uses automake 1.10.0, 
          autoconf 2.61, and libtool 1.5.22. MAM - 2007/7/25.
        - Changed default fortran compiler to g95 when gcc is used. - AKC
          2007/2/17.
        - 'make check-vfd' can now be run from the top level directory. Not all
          tests that 'make check' invokes work with certain Virtual File Drivers,
          so those tests have been skipped. - MAM 2006/7/17  
        - Added the variable HDF5TestExpress to control how long tests run.
          Setting it to a value between 0 and 3 controls how thoroughly the
          library is tested, with 0 being an "exhaustive run" and 3 being a
          very quick "smoke test."  1 (a "full run") is the default.
          -JML 2006/6/21
        - If both shared and static libraries are installed, now both will be
          tested during 'make install'. -MAM 2006/06/21
        - Added support to explicity enable stream_vfd or shared libraries
          when using parallel via the '--enable-stream_vfd' and
          '--enable-shared' options, respectively. If not explicity defined, 
          These settings default to enabled when parallel is not used, 
          and disabled when parallel is used. -MAM 2006/06/17
        - Remove the flexible parallel code and the --enable-fphdf5
          configure option, it was never up to production standards
          anyway.  -QAK 2006/4/20
        - Added a macro hdf5_mpi_special_collective_io_works to filter out
          some mpi-io packages that don't support collective IO for no IO
          contributions in some processes. -KY 2006/2/16
	- Added -shlib option to link against installed shared libraries to
	  h5c++ and h5fc.  -JML 2005/11/1
	- Added --enable-build-all option to configure, which only developers
	  should need to use.  -JML 2005/10/24
	- Configure uses the 'TR' variable to let the user override the path
          to the 'tr' utility. -JML 2005/10/17
	- Configure can recognize -lmpich as a form of MPI library. -AKC-
	  2005/9/28.
        - MD5 checksumming has been added to snapshot releases.  Release
          tarballs will be accompanied by .md5 checksum files, which can
          be verified using the md5sum utility.  -JML 2005/9/6
        - Some configure flags are incompatible (e.g., the C++ APIs cannot
          be built using the parallel version of HDF5).  configure will now
          output errors when some common incompatible features are used
          together.  -JML 2005/9/6
        - A new API function, H5Tis_hard(), was added to the library.  It
          checks if a conversion function is a compiler (hard) conversion.
          SLU - 2005/9/6
	- t_mpi will run the test_mpio_derived_dtype by default unless it is
	  known not working (indicated by macro H5_MPI_COMPLEX_DERIVED_DATATYPE_WORKS
	  not defined.)  -AKC- 2005/8/23.
	- Test execution has changed in a number of ways:
	  When make is invoked in parallel (using -j), sequential tests
	  are now executed as parallel make targets.  This should make them
	  finish more quickly on machines with multiple processors.
	  Since test output is garbled when they are executed by parallel make,
	  tests now dump their output to foo.log files and foo.logsh files
	  (for test scripts).  These logs are printed to the screen only
	  when a test fails or when all tests in the current directory have
	  completed successfully.
	  When tests pass, they will create a foo.chkexe file.
	  This prevents the test from executing again until the test or
	  main library changes.
	  All files generated by tests (*.chkexe, *.log, and any *.h5 files
	  created) can be removed by invoking 'make check-clean'.
	  Sequential and parallel library tests can now be invoked separately.
	  'make check-s' will execute only sequential tests, and 'make check-p'
	  will execute only parallel tests.  'make check' will still execute
	  all tests.
	    -JML 2005/08/03
        - On windows, all.zip is deprecated. users should
             read INSTALL_Windows.txt to know the details.
             Reasons to deprecate all.zip:
		1. Avoid confliction for windows programmers
                2. Decrease size of CVS tree by adding all.zip
	        3. Avoid using winzip as the intermediate step
             --KY 2005/04/22
	- When HDF5 is created as a shared library, it now uses libtool's
	  shared library versioning scheme. -JML 2005/04/18
	- HDF5 now uses automake 1.9.5 to generate Makefiles.in.
	  This has a number of effects on users:
          The Fortran compiler should be set using the environment
          variable $FC, not $F9X.  F9X still works, but is depreciated.
	  The output of make may be different.  This should be only a
          cosmetic effect.
	  make depened (or make dep) is no longer recognized, since automake
	  handles dependency tracking.
	  Some new configure options exist.  --enable-dependency-tracking
          and --disable-dependency-tracking are used to control automake's
	  dependency tracking.  Dependencies are on by default *on most
	  platforms and compilers*.  If --enable-dependency-tracking is
	  used, they will be enabled on any platform.  However, this can
	  slow down builds or even cause build errors in some cases.
	  Likewise, --disable-dependency-tracking can speed up builds and
	  avoid some build errors.
	  Some make targets have alternate names.  make check-install and
	  make installcheck do the same thing, for instance.
	  pmake on IRIX can be invoked from the root directory, but the
	  -V flag must be used to invoke it in any subdirectory or it
	  will give an error about undefined variables.
	  JML 2005/01 - 2005/03
        - Hardware conversion between long double and integers is also added.
          SLU 2005/02/10
        - Started to support software conversion between long double and 
          integers.  Hardware conversion will come very soon.  SLU - 2005/1/6
	- Intel v8.0 compiler would infinite loop when compiling some test
	  code with -O3 option.  Changed enable-production default compiler
	  option to -O2. AKC - 2004/12/06
	- Long double is assumed to be a supported C data type.  It is a
	  stanadard C89 type. AKC - 2004/10/22
	- The IA64 will use ecc as the C++ compiler by default.
        - Added some initial support for making valgrind/Purify (or similar
            memory checking products) happier by initializing buffers to zero
            and disabling the internal free list code.  To take advantage of
            this, use the "--enable-using-memchecker" configure option when
            building the library.  QAK - 2004/07/23
        - Fixed the long compile time of H5detect.c when v7.x Intel Compiler
	    is used with optimization NOT off.  AKC - 2004/05/20
	- Fixed configure setting of C++ for OSF1 platform. AKC - 2004/01/06
        - Prefix default is changed from /usr/local to `pwd`/hdf5.
            AKC - 2003/07/09

    Library:
    --------
       - Removed size restrictions on attributes, when using the "latest"
            version of the file format. - QAK - 2007/02/21
       - Relaxed restrictions on attribute operations to allow a file ID to
            be used as the "location ID".  If a file ID is used, the attribute
            operation will occur on the root group of the file.
            - QAK - 2007/02/09
       - Enabled the CORE driver to read an existing file depending on 
            the setting of the backing_store for H5Pset_fapl_core and file 
            open flags. - SLU - 2006/11/30
       - Added new H5Gget_info_by_idx() routine to query the information about
            a group according to the order within an index.
            - QAK - 2006/11/27
       - Added new H5Gget_info() routine to query the information about a
            group by name.
            - QAK - 2006/11/27
       - Added new H5Oget_info_by_idx() routine to query the information about
            an object in a group according to the order within an index.
            - QAK - 2006/11/26
       - Added new H5Oget_info() routine to query the information about an
            object in a group by name.
            - QAK - 2006/11/26
       - Added new H5Oopen_by_idx() routine to open an object in a group
            according to the order within an index.
            - QAK - 2006/11/20
       - Added new H5Literate() routine to iterate over links in a group
            according to the order within an index.
            - QAK - 2006/11/20
       - Added new H5Ldelete_by_idx() routine to delete a link according to
            the order within an index.
            - QAK - 2006/11/13
       - Added new H5Lget_val_by_idx() routine to query the value of a soft link
            according to the order within an index.
            - QAK - 2006/11/13
       - Added new H5Lget_name_by_idx() routine to query the name of a link
            according to the order within an index.
            - QAK - 2006/11/12
       - Added new H5Rget_name() routine to determine the name of the object
            that a reference points to, as long as the object is still
            reachable in the group hierarchy.
            - QAK - 2006/11/10
       - Added new H5Lget_info_by_idx() routine to query the link information
            according to the order within an index.
            - QAK - 2006/11/10
       - Added feature to H5Iget_name to allow retrieving the name of any
            object's ID, as long as the object is still reachable in the
            group hierarchy.
            - LA - 2006/11/01
       - Added External and User-defined links.
            External links are links from one HDF5 file to another; they
            require both the name of the file and a path within that file.
            User-defined links allow users to supply callback functions
            for link traversals, allowing links to exhibit essentially
            any behavior.
            External links are a kind of user-defined link, so their default
            behavior can be overridden by the user.
            -JML 2006/8/23
       - Added H5Oopen and H5Oclose for opening objects of unknown type
            (as link callback functions do).
            -JML 2006/8/23
       - Added H5Oopen_by_addr, H5Oincr_refcount, and H5Odecr_refcount for
            opening objects by address.  Be very careful with these!
            -JML 2006/8/23
       - Added H5Fget_intent to get the "intent" of a file (whether it
            was opened with read-write access or read-only.
            -JML 2006/8/23
       - Added Link Access Property Lists. They currently contain two
            properties, nlinks (H5Pget/set_nlinks) and elink_prefix
            (H5Pget/set_elink_prefix). nlinks controls how many soft and
            user-defined traversals are allowed before HDF5 assumes it has
            found a cycle (previously this defaulted to 16).
            The elink_prefix is a filesystem path that is prefixed to the
            names of any external link files opened using this LAPL.
            -JML 2006/8/23
       - Add H5L link APIs.  Old APIs (H5Glink, H5Gmove, etc.) are still
         supported but deprecated.
         New APIs are:
            H5Llink - create a link to an object given its ID
            H5Lmove - just like H5Gmove2
            H5Lcopy - copy a link without copying the underlying object
            H5Lcreate_hard - like H5Glink2 for hard links
            H5Lcreate_soft - like H5Glink2 for soft links
            H5Ldelete - just like H5Gunlink
            H5Lget_val - just like H5Gget_linkval
            H5Lget_info - gets link-specific info (like H5Gget_objinfo)

         In addition, H5Gcreate_anon, H5Tcommit_anon, and H5Dcreate_anon
         no longer create links to objects; objects must be manually linked
         using H5Llink or they will be deleted when the ID is closed.

         Link Creation Property Lists can be used to pass character
         encoding (ASCII or UTF-8) for link names and to set the Intermediate
         Group Creation Flag:
            H5Pset_char_encoding, H5Pget_char_encoding
            H5Pset_copy_object, H5Pget_copy_object
         -JML 2006/7/5
       - Added managements of collective IO supports for chunking storage
         inside parallel HDF5
         1) Implemented One IO with collective mode for all chunks in the
            application by building one MPI derived datatype accross all
            chunks.
         2) Implemented the decision-making support to do collective IO inside
            MPI-IO per chunk. 
         3) Added the decision-making support to do one IO accross all chunks
            or to do multiple IOs with each IO per chunk.
         4) Added the support to handle the case some processes won't do any IOs in 
            collectively.
         5) Some MPI-IO package(mpich 1.2.6 or lower, e.g.) cannot handle
            collective IO correctly for the case when some processes have no
            contributions to IOs, a special macro is added to change
            collective IO mode to independent IO mode inside HDF5 library.

            Currently we find that MPICH at Linux and vender MPI-IO package at NCSA
            Altix cannot handle this case. 
            
             "hdf5_mpi_special_collective_io_works=${hdf5_mpi_special_collective_io_works='no'}"
              has been added at the end of file <ia64-linux-gnui> and
                                                 <linux-gnulibc1>.

             If MPI-IO packages at your Linux and Altix support this case,
             please comment out the last line and report to us at
             help@hdfgroup.org. We can tune in our configuration to
             support this.                                                     
 
             KY - 2006/02/16
       - Added character encoding to attribute creation property lists.
            JML - 2006/01/02
       - Added H5Gcopy() routine to copy objects between while keeping
         data in compressed form.  QAK - 2005/11/06
       - Added H5Sextent_equal() routine.  QAK - 2005/11/06
       - Added HSYS_ERROR which retrieves the system error message and pushes
         it to the error stack.  This gives more information of the failed
	 system call. AKC - 2005/08/04
       - Added H5F_OBJ_LOCAL flag to H5Fget_obj_count() & H5Fget_obj_ids(), to
         allow querying for objects in file that were opened with a particular
         file ID, instead of all objects opened in file with any file ID.
         QAK - 2005/06/01
       - Added H5T_CSET_UTF8 character set to mark datatypes that use the
         UTF-8 Unicode character encoding.  Added tests to ensure that
         library handles UTF-8 object names, attributes, etc. -JL 2005/05/13
       - HDF5 supports collective MPI-IO for irregular selection with HDF5
         dataset. Irregular selection is when users use H5Sselect_hyperslab
         more than once for the same dataset.
         Currently, not all MPI-IO packages support complicated MPI derived
                     datatype used in the implementation of irregular
                     selection INSIDE HDF5. 
                     1) DEC 5.x is not supporting complicated derived datatype.
                     2) For AIX 5.1,
                     if your poe version number is 3.2.0.19 or lower,
                     please edit powerpc-ibm-aix5.x under hdf5/config,
                     Find the line with
                            << hdf5_mpi_complex_derived_datatype_works>>
                     and UNCOMMENT this line before the configure.
                     check poe version with the following command:
                     lpp -l all | grep ppe.poe
                     3) For Linux cluster, 
                        if mpich version is 1.2.5 or lower, collective irregular selection
                        IO is not supported, internally independent IO is used.
                     4) For IRIX 6.5,
                        if C compiler version is 7.3 or lower, collective irregular selection
                        IO is not supported, internally independent IO is used.
                     5) For platforms which internally used mpich, if the
                        mpich version is 1.2.5 or lower, please find the 
                        corresponding config file and add
                        hdf5_mpi_complex_derived_datatype_works='no' at the
                        end of the configuration file. For example, at NCSA
                        SGI Altix, the internal mpich library is 1.2.5. So 
                        hdf5_mpi_complex_derived_datatype_works='no' should be
                        added at the end of the config file ia64-linux-gnu.
                     KY - 2005/09/12
        We also found not all MPI-IO packages support collective IO with one
                    or more processes to have no contributions to IO.
                     For mpich version 1.2.6 or lower and all IRIX machine, 
                     if the library  checks that there are no IO contributions for some
                     processes, collective IO request is replaced with
                     independent inside HDF5.
                     KY - 2006/05/04
                    
        - HDF5 N-bit filter 
          HDF5 support N-bit filter from this version,  
          The N-Bit filter is used effectively for compressing data of N-Bit
          datatype as well as compound and array datatype with N-Bit fields. 
          KY - 2005/04/15
        - HDF5 scaleoffset filter
          HDF5 supports scaleoffset filter for users to do data
          compression through HDF5 library. 
          Scale-Offset compression performs a scale and/or offset operation
          on each data value and truncates the resulting value to a minimum 
          number of bits and then stores the data.
          Scaleoffset filter supports floating-point and integer datatype.
          Please check the HDF5 reference manual for this.
          KY - 2005/06/06
        - Retired SRB vfd (--with-srb). Functions H5Pset_fapl_srb and
          H5Pget_fapl_srb were removed.  EIP - 2005/04/07
	- Retired GASS vfd (--with-gass).  Functions H5Pset_fapl_gass and
	  H5Pget_fapl_gass are removed too.  AKC - 2005/3/3
        - Pablo was removed from the source code EIP - 2005/01/21
        - Modified registration of SZIP to dynamically detect the presence
            or absence of the encoder.  Changed configure and Makefiles,
            and tests to dynamically detect encoder. BEM - 2004/11/02
	- Added function H5Pget_data_transform, together with the previously
	    added H5Pset_data_transform, to support the data transform
	    feature. AKC - 2004/10/26
        - Compound datatype has been enhanced with a new feature of size 
            adjustment.  The size can be increased and decreased(without
            cutting the last member) as long as it doesn't go down to zero.  
            No API change is involved.  SLU - 2004/10/1
        - Put back 6 old error API functions to be backward compatible with
            version 1.6.  They are H5Epush, H5Eprint, H5Ewalk, H5Eclear,
            H5Eset_auto, H5Eget_auto.  Their new equivalent functions are
            called H5Epush_stack, H5Eprint_stack, H5Ewalk_stack,
            H5Eclear_stack, H5Eset_auto_stack, H5Eget_auto_stack.  SLU -
            2004/9/2
        - 4 new API functions, H5Tencode, H5Tdecode, H5Sencode, H5Sdecode were
            added to the library.  Given object ID, these functions encode and 
            decode HDF5 objects(data type and space) information into and from 
            binary buffer.        SLU - 2004/07/21
        - Modified the way how HDF5 calculates 'pixels_per_scanline' parameter for 
            SZIP compression. Now there is no restriction on the size and shape of the
            chunk except that the total number of elements in the chunk cannot be 
            bigger than 'pixels_per_block' parameter provided by the user.  
                                                                     EIP - 2004/07/21  
        - Added support for SZIP without encoder.  Added H5Zget_filter_info
            and changed H5Pget_filter and H5Pget_filter_by_id to support this
            change.  JL/NF - 2004/06/30
        - SZIP always uses K13 compression.  This flag no longer needs to
            be set when calling H5Pset_szip.  If the flag for CHIP
            compression is set, it will be ignored (since the two are mutually
            exclusive).  JL/NF - 2004/6/30
        - A new API function H5Fget_name was added.  It returns the name
            of the file by object(file, group, data set, named data type,
            attribute) ID.  SLU - 2004/06/29
        - Added support for user defined identifier types.  NF/JL - 2004/06/29
        - A new API function H5Fget_filesize was added.  It returns the
            actual file size of the opened file.  SLU - 2004/06/24
	- New Feature of Data transformation is added.  AKC - 2004/05/03.
        - New exception handler for datatype conversion is put in to 
            replace the old overflow callback function.  This exception
            handler is set through H5Pset_type_conv_cb function.
            SLU - 2004/4/27
        - Added option that if $HDF5_DISABLE_VERSION_CHECK is set to 2,
	    will suppress all library version mismatch warning messages.
	    AKC - 2004/4/14
	- A new type of dataspace, null dataspace(dataspace without any 
            element) was added.  SLU - 2004/3/24
        - Data type conversion(software) from integer to float was added.
            SLU - 2004/3/13 
        - Data type conversion(software) from float to integer was added.
            Conversion from integer to float will be added later.  
            SLU -2004/2/4
        - Added new H5Premove_filter routine to remove I/O pipeline filters
            from dataset creation property lists.  PVN - 2004/01/26
        - Added new 'compare' callback parameter to H5Pregister & H5Pinsert
            routines.  QAK - 2004/01/07
        - Data type conversion(hardware) between integers and floats was added.
            SLU 2003/11/21
        - New function H5Iget_file_id() was added.  It returns file ID given
            an object(dataset, group, or attribute) ID.  SLU 2003/10/29
        - Added new fields to the H5G_stat_t for more information about an
            object's object header.  QAK 2003/10/06
        - Added new H5Fget_freespace() routine to query the free space in a
            given file.  QAK 2003/10/06
        - Added backward compatability with v1.6 for new Error API. SLU - 
            2003/09/24
        - Changed 'objno' field in H5G_stat_t structure from 'unsigned long[2]'
            to 'haddr_t'.  QAK - 2003/08/08
        - Changed 'fileno' field in H5G_stat_t structure from 'unsigned long[2]'
            to 'unsigned long'.  QAK - 2003/08/08
        - Changed 'hobj_ref_t' type from structure with array field to 'haddr_t'.
            QAK - 2003/08/08
        - Object references (hobj_ref_t) can now be compared with the 'objno'
            field in the H5G_stat_t struct for testing if two objects are the
            same within a file.  QAK - 2003/08/08
        - Switched over to new error API. SLU - 2003/07/25

    Parallel Library:
    -----------------
	- Added mpich2 as a testing "platform" informally. AKC - 2005/9/28.
	- A dataset created in serial mode with H5D_ALLOC_TIME_INCR allocation
	  setting was not extendible, either explicitly by H5Dextend or
	  implicitly by writing to unallocated chunks.	Library now allocates
	  more space when needed or directed if the file is opened by parallel
	  mode, independent of what the dataset allocation mode is.
	  CC/AKC - 2005/08/29.
        - Allow compressed, chunked datasets to be read in parallel.
            QAK - 2004/10/04
        - Add options of using atomicity and file-sync to test_mpio_1wMr.
            AKC - 2003/11/13
        - Added parallel test, test_mpio_1wMr, which tests if the
            underlaying parallel I/O system is conforming to the POSIX
            write/read requirement.  AKC - 2003/11/12

    Fortran Library:
    ----------------
         - added support for shared Fortran libraries.  -JML 2005/09/20
         - added missing h5tget_member_class_f function
                                                 EIP 2005/04/06         
         - added new functions h5fget_name_f and h5fget_filesize_f 
                                                 EIP 2004/07/08
         - h5dwrite/read_f and h5awrite/read_f functions only accept dims parameter
            of the type INTEGER(HSIZE_T).
         - added support for native integers of 8 bytes (i.e. when special
           compiler flag is specified to set native fortran integers to 8 bytes,
           for example, -i8 flag for PGI and Absoft Fortran compilers, 
           -qintsize=8 flag for IBM xlf compiler).
                                                 EIP 2005/06/20
         - added support for "big" REAL and DOUBLE PRECISION types
           (usually the size is specified by compilers flags like 
            -r8, -r16, etc.)
           Known problem: multi file test fails when REAL is 16 bytes.
                                                EIP 2005/09/8

    C++ Library:
    ----------------
        - added support for shared C++ libraries.  -JML 2005/09/20
        - Added missing member functions
                H5::CompType::getMemberArrayType
                H5::CompType::getMemberVarLenType
                H5::AbstractDs::getArrayType
                H5::AbstractDs::getVarLenType
                H5::CommonFG::openArrayType
                H5::CommonFG::openVarLenType
                H5::PropList::copyProp -- this will replace the current
                        H5::PropList::copyProp in later releases due
                        to incorrect prototype.
                H5::IdComponent::getHDFObjType
                BMR - 2005/08/08


    Tools:
    ------
        - h5repack and h5diff changed command line parameter syntax to be
           similar to h5dump, adding also long switch names. PVN - 2008/1/16
        - h5repack now supports adding multiple filters to all objects. 
	     PVN - 2008/1/16
        - h5dump lists groups and attributes in requested orders (by name and 
           creation order, both ascending and descending). PVN - 2007/10/5
        - h5import imports string (text) data. PVN - 2007/10/5
        - h52gif and gif2h5: Both these tools were revised to include the High
          Level Image API support, and tests were added to /hl/tools/gif2h5.
           PVN - 2007/04/13
        - h5dump: added support for double long type H5T_NATIVE_LDOUBLE. PVN
           2007/03/13
        - h5dump: added support for binary output, see usage. PVN 2007/03/13
        - h5repack: added support for the new nbit and scaleoffset filters.
           PVN - 2007/05/07
        - h5repack: now uses the API function H5Ocopy (of the tool h5copy) to
           recreate objects if there is not a user input for changes. PVN -
           2007/05/07
        - h5repack: added support for reading and repacking  by hyperslabs for
           large files. PVN - 2007/03/01
        - h5repack: a new option allows the copy using the file type (default)
           instead of the previous conversion to native type. PVN - 2007/03/01
        - h5repack: output the percentage of compression used. PVN - 2007/03/01
        - h5diff: added support for -p option for unsigned long_long data. PVN
          - 2007/02/26
        - h5diff: added support for comparing dataset regions. PVN - 2007/02/20
        - h5diff: added support for reading and comparing by hyperslabs for large files.
           PVN - 2007/02/20
        - h5diff: printing of dataset dimensions along with dataset name. PVN -2007/02/19
        - h5dump now uses the new API function H5Rget_name to display the name
          of the dataset referenced instead of its ID. PVN - 2007/02/19
        - Added new tool, h5mkgrp. QAK - 2007/02/14
        - Added new tool, h5copy. PVN - 2006/7/15
	- Removed obsolete pdb2hdf5 tool from tools/misc  -JML 2005/10/24
	- Added build_h5perf_alone.sh that builds h5perf by standalone mode.
	  AKC - 2005/09/18.
        - Sped up h5dump on files with large numbers of objects.
            QAK - 2005/08/25
        - Added a standalone mode for building h5perf.  AKC - 2005/08/12
        - new tool, h5jam. See reference manual.  2004/10/08
        - h5repack.sh did not report errors encountered during tests.  It does
            now.  AKC - 2004/04/02
        - Added the MPI-I/O and MPI-POSIX drivers to the list of VFL drivers
            available for h5dump and h5ls.  RPM & QAK - 2004/02/01
        - Added option --vfd= to h5ls to allow a VFL driver to be selected
            by a user.  RPM & QAK - 2004/02/01
	- Added option -showconfig to compiler tools (h5cc,h5fc,h5c++).
	    AKC - 2004/01/08
        - Install the "h5cc" and "h5fc" tools as "h5pcc" and "h5pfc"
            respectively if library is built in parallel mode.
            WCW - 2003/11/04
        - Added metadata benchmark (perform/perf_meta).  SLU - 2003/10/03
        - Changed output of "OID"s from h5dump from "<number>-<number>" to
            "<number".  This affects both the "regular" and XML output.
            QAK - 2003/08/08
        - Changed output of file IDs and "OID"s from h5ls from
            "<number>:<number>:<number>:<number>" to "<number>:<number>"
            QAK - 2003/08/08

    High-Level APIs:
    ------
        - Fortran interfaces for the Image, Table and Lite APIs. PVN - 2007/5/1
        - New HDF5 Dimension Scale API (H5DS) allows dimension scales to be
          created in an HDF5 file and associated with specific datasets. PVN - 2007/5/1
        - There are two new functions in the Lite library, H5LTtext_to_dtype
            and H5LTdtype_to_text.  H5LTtext_to_dtype creates a HDF5 data type
            given a text description; H5LTdtype_to_text converts a data type
            to text description.  Only DDL definition is supported as text 
            desciption now. SLU - 2006/05/17
        - Added Packet Table API for creating tables with less overhead than
            H5TB API.  Added C++ wrapper for Packet Tables.  See documentation.
            JML - 2004/03/28
    
    Documentation 
    ------------- 
        - The documentation for this release is largely complete, but 
            trails the source code.  A few of the newer functions are 
            not yet documented.                       FMB - 2007/04/18
        - The user documents for this release can be accessed directly at
            this location:
               http://www.hdfgroup.uiuc.edu/HDF5/doc_1.8pre/doc/
            The most recent document versions (updated daily) in the 
            1.8 development branch can be accessed at this location:
               http://www.hdfgroup.uiuc.edu/HDF5/doc_dev_snapshot/H5_dev/
                                                      FMB - 2007/04/18


Support for new platforms, languages and compilers.
=======================================
        - Added support for Free-BSD on amd64 with GNU C and Fortran compilers
          4.2.1
                                                     EIP - 2007/06/25
        - Added support for sequential and parallel libraries for Intel 64 Linux
          cluster (abe.ncsa.uiuc.edu).  Among three MPICH packages available on
          this machine, only Open MPI works.  The VMI has seg fault in hyperslab.c
          and bittests.c tests.  The MVAPICH2 complained about mpd not running 
          the parallel test.  (see Known Problems section for more info)
                                                     EIP - 2007/06/25
        - Added support for HPUX11.23 for both 32 and 64-bit; HDF5 C++
        - Added support for 64-bit Windows with Visual Studio .NET and 2005.
            SJW - 2007/06/25
        - Added suport for HPUX11.23 for both 32 and 64-bit; HDF5 C++
          shared library is not supported with +DD64 flag.
                                                     EIP - 2006/06/22
        - Added support for VAX floating numbers for Alpha Open VMS 7.3.2
                                                     EIP - 2006/05/05
        - Fixed broken make.com files in tools directories
                                                     EIP - 2006/05/05
        - Added support for Alpha Open VMS 7.3.2 EIP - 2006/04/15
        - Added support for Cray X1.  JML - 2005/10/03
        - PGI Fortran compiler is supported on Linux64 systems (x86_64)
                            EIP - 2004/08/19
        - Absoft compiler f95 v9.0 supported on Linux 2.4
                            EIP - 2004/07/29
        - HDF5 Fortran APIs are supported on Mac OSX with IBM XL Fortran
            compiler version 8.1. This is a default compiler.
        - HDF5 Fortran APIs are supported on MAC OSX with Absoft F95 compiler
            version 8.2; set F9X environment varibale to f95, for example
            setenv F9X f95
            Use --disable-shared --enable-static configure flags when Absoft
            compiler is used.
                             EIP - 2004/07/27
        - HDF5 Fortran APIs are supported on MAC OSX with IBM XL Fortran
            Compiler version 8.1 Use "--disable-shared --enable-static"
            configure flags along with the "--enable-fortran" flag to build
            Fortran library.  EIP - 2004/01/07

Bug Fixes since HDF5-1.6.0 release
==================================

    Library
    -------
        - Changed library's behavior for reading files that might have
            corrupted object header information from a previous (buggy)
            version of the library.  By default, the library now rebuilds the
            correct object header information instead of issuing an error.
            Previous "strict" file format interpretation can be enabled with
            the "--enable-strict-format-checks" configure option.
            QAK - 2008/01/13
        - Fixed several bugs with writing fill values for datasets that have
            a variable-length datatype or component datatype.  QAK - 2007/06/19
        - STDIO driver didn't support files bigger than 2GB because the OFFSET
            parameter of fseek is of type LONG INT, not big enough for big files.
            Use fseeko instead for big files if it's available on the system.
            SLU - 2007/4/5
        - Fixed a bug in H5Sselect_valid() that caused an incorrect value to
            be returned (0) instead of FAIL on error conditions such as the
            selection or extent not being defined. CMC - 2007/01/17
        - Fixed the MULTI driver problem (Bug #731) that corruptted the data.
            SLU - 2007/1/12
        - Fixed file corruption bug which could write an incorrect number of
            messages to an object's header under certain circumstances.
            Generally, the sequence of actions to generate this bug looks
            like this:
                - Create an object
                - Close the file
                - Re-open the file
                - Add 2 (or more) attributes to the object
                - Close the file
                - Re-open the file
                - Delete one of the attributes on the object
                - Add a smaller attribute to the object
                - Delete the smaller atttribute on the object
                - Add a larger attribute on the object

            After this, the number of header messages stored for the object
            will be off by one.  Other sequences of modifying attributes on an
            object could also trigger this bug.  If you are opening an
            object and the bottom few messages of the HDF5 error stack
            resembles this, the object has been affected by this bug:

              #007: ../../hdf5_v1.6/src/H5C.c line 3887 in H5C_load_entry(): unable to load entry
                major(08): Meta data cache layer
                minor(40): Unable to load metadata into cache
              #008: ../../hdf5_v1.6/src/H5Ocache.c line 332 in H5O_load(): corrupt object header - too few messages
                major(12): Object header layer
                minor(40): Unable to load metadata into cache

            Specifically, "corrupt object header" is the best string to search
            for in the HDF5 error stack output.

            If your files have been affected by this bug, or you are concerned
            that your files might have been, please contact the HDF Helpdesk
            at help@hdfgroup.org for a tool to detect and repair files
            affected by this problem.  QAK - 2006/6/16
        - Fixed various problems with retrieving names of objects, especially
            with mounted files.  QAK - 2005/12/25
        - Fixed core dump when closing root groups opened through two different
            file handles that operate on the same actual file.  QAK - 2005/10/02
        - Corrected errors when performing various operations on a group opened
            by dereferencing an object reference.  QAK - 2005/07/30
        - Fixed a bug with named datatypes where a copy of a named datatype
            used to create a dataset would accidentally use the original
            named datatype for the dataset's datatype.  QAK - 2005/07/23
        - Made H5Fget_name() be consistent and always return name of actual
            file the ID is in.  (Instead of the name of the top file in a
            file mounting hierarchy).  QAK - 2005/07/19
        - Reworked internal file mounting semantics to hopefully eliminate
            mounting problems.  We now require that files that are mounting
            together all have the same "file close degree".  QAK - 2005/07/19
        - More bug fixes on holding open files that are mounted and have
            IDs open.  QAK - 2005/07/14
        - Don't unmount child files until the parent file actually closes.
            (Previously, if an object is holding open a file, the child files
            would get unmounted too early).  QAK - 2005/07/05
        - Fixed bug where unmounted files could cause the library to go into
            an infinite loop when shutting down.  QAK - 2005/06/30
        - The library didn't save the information of family driver in file.
          The original file member size was lost after file was closed (see
          bug #213).  This has been fixed by saving driver name and member
          file size in the superblock.  SLU - 2005/6/24
        - Fixed bug with hyperslab selections that use selection offsets and
            operate on chunked datasets going into infinite loop or dumping
            core.  QAK - 2005/06/17
        - Corrected memory leak and possible corruption when opening a group.
            QAK - 2005/06/17
        - Added check for opaque datatype tags being too long (check against
            H5T_OPAQUE_TAG_MAX, currently set to 256).  QAK - 2005/06/14
        - Fixed various errors in maintaining names for open objects in the
            face of unusual mount & unmount operations.  QAK - 2005/06/08
        - "SEMI" and "STRONG" file close degree settings now apply only to the
            particular file ID being closed, instead of operating on all open
            file IDs for a given file.  QAK - 2005/06/01
        - For family driver, the library didn't save member size in file.
          When file is reopened, the size of 1st member file determine the 
          member size.  Now member size is saved in file and is used to 
          define member file size.  Wrong file access property of member size
          will result in a failure.  Using any other driver except family 
          will cause library to return error.  So is multi driver. SLU - 
          2005/05/24  
        - Fixed error in opening object in group that was opened in mounted
          file which has been unmounted.  QAK - 2005/03/17
        - Fixed a racing condition in MPIPOSIX virtual file drive close
	  function.  Now all processes must completed the close before any
	  of them is returned.  This prevents some "faster" processes start
	  accessing the file for another purpose (e.g., open with truncate)
	  while other "slower" processes have not closed the same file with
	  the previous purpose.  AKC - 2005/03/01
        - H5Tget_member_value calls for enum datatype didn't return correct 
            value if H5Tenum_valueof was called first.  It's fixed.  SLU - 
            2005/02/08
        - For variable-length string, H5Tget_class returned H5T_STRING as its
            class.  But H5Tdetect_class and H5Tget_member_class considered it
            as H5T_VLEN.  This is fixed to let all these 3 functions treat it
            as H5T_STRING.  SLU - 2005/02/08
        - The byte order of 1-byte integer types was fixed as little endian
            even on a big-endian machine.  This has been corrected.  SLU -
            2005/02/07 
        - Fix segmentation fault when calling H5Fflush with an attribute that
            hasn't had a value written to it open.  QAK - 2004/10/18
        - Back up supporting bitfield and time types in H5Tget_native_type.  
            Leave it to future support.  The function simply returns error 
            message of "not support" for bitfield and time types.  
            SLU - 2004/10/5
        - Fixed address check in Core VFL driver to avoid spurious address/size
            overflows for odd valued addresses and/or sizes.  QAK - 2004/09/27
	- Fixed parallel bug in which some processes attempted collective
	    I/O while others did independent I/O.  Bug appeared when some
	    processes used point selections, and others didn't.  JRM - 2004/9/15
        - Corrected error where dataset region references were written in an
            incorrect way on Cray machines.  PVN & QAK - 2004/09/13
        - The H5Tget_native_type now determines the native type for integers 
	    based on the precision. This is to avoid cases of wrongly converting 
            an int to a short in machines that have a short of 8 bytes but with 
	    32bit precision (e.g Cray SV1). PVN - 2004/09/07  
        - Changed H5Dread() to not overwrite data in an application's buffer
            with garbage when accessing a chunked dataset with an undefined
            fill value and an unwritten chunk is uncountered.  QAK - 2004/08/25
        - Fixed error which could cause a core dump when a type conversion
            routine was registered after a compound datatype had been
            converted and then an equivalment compound datatype was converted
            again.  QAK - 2004/08/07
        - Fixed memory overwrite when encoding "multi" file driver information
            for file's superblock.  QAK - 2004/08/05
        - Fixed obscure bug where a filter which failed during chunk allocation
            could allow library to write uncompressed data to disk but think
            the data was compressed.  QAK - 2004/07/29
        - Fixed bug where I/O to an extendible chunked dataset with zero-sized
            dimensions would cause library to fail an assertion.
            QAK - 2004/07/27
        - Fixed bug where chunked datasets which have filters defined,
            allocation time set to "late" and whose chunks don't align with
            the dataspace bounds could have incorrect data stored when
            overwriting the entire dataset on the first write.  QAK - 2004/07/27
        - Added check to ensure that dataspaces have extents set. JML-2004/07/26
        - Fixed bug on some Solaris systems where HDF5 would try to use
            gettimeofday() when that function didn't work properly.
            JML - 2004/07/23
        - Fixed bug in H5Sset_extent_simple where setting maximum size to
            non-zero, then to zero would cause an error.  JML - 2004/07/20
        - Allow NULL pointer for buffer parameter to H5Dread & H5Dwrite
            when not writing data ("none" selection or hyperslab or point
            selection with no elements defined).  QAK - 2004/07/20
        - Calling H5Gcreate() on "/" or "." throws an error instead of
            failing quietly. JML - 2004/07/19
        - Fixed bug where setting file address size to be very small could
            trigger an assert if the file grew to more than 64 KB.  Now throws
            an error and data can be recovered. JL/NF - 2004/07/14
        - Fixed bug where "resurrecting" a dataset was failing.
            QAK - 2004/07/14
        - Fixed bug where incorrect data could be read from a chunked dataset
            after it was extended.  QAK - 2004/07/12
        - Fixed failure to read data back from file of compound type with
            variable-length string as field.  SLU - 2004/06/10
        - Fixed potential file corruption bug when a block of metadata could
            overlap the end of the internal metadata accumulator buffer and
            the buffer would be extended correctly, but would incorrectly 
            change it's starting address.  QAK - 2004/06/09
        - Opaque datatype with no tag failed for some operations.  Fixed.
            SLU - 2004/6/3 
        - Fixed potential file corruption bug where dimensions that were
            too large (a value greater than could be represented in 32-bits)
            could cause the incorrect amount of space to be allocated in a
            file for the raw data for the dataset.  QAK - 2004/06/01
	- Fixed dtypes "sw long double -> double" failure in QSC class
            machines.  AKC - 2004/4/16
        - Fixed problem with fletcher32 filter when converting data of different
	    endianess. PVN - 2004/03/10
        - Fixed problem with H5Tget_native_type() not handling opaque fields
            correctly.  QAK - 2004/01/31
        - Fixed several errors in B-tree deletion code which could cause a
            B-tree (used with groups and chunked datasets) to become corrupt
            with the right sequence of deleted objects.  QAK - 2004/01/19
        - Fixed small internal memory leaks of fill-value information.
            QAK - 2004/01/13
        - Fixed bug that caused variable-length datatypes (strings or sequences)
            used for datasets in files with objects that were unlinked to
            fail to be read/written to a file.  QAK - 2004/01/13
        - Detect situation where szip 'pixels per block' is larger than the
            fastest changing dimension of a dataset's chunk size and disallow
            this (due to limits in szip library).  QAK - 2003/12/31
        - Fixed bug with flattened hyperslab selections that would generate
            incorrect hyperslab information with certain high-dimensionality
            combinations of start/stride/count/block information.
            QAK - 2003/12/31
        - Fixed bug with variable-length datatypes used in compound datatypes.
            SLU - 2003/12/29
        - Fixed bug in parallel I/O routines that would cause reads from
            "short datasets" (datasets which were only partially written out)
            to return invalid data.  QAK & AKC - 2003/12/19
        - Fixed bug where scalar dataspaces for attributes were reporting as
            simple dataspaces.  QAK - 2003/12/13
        - Fixed problem with selection offsets of hyperslab selections in
            chunked datasets causing the library to go into an infinite loop.
            QAK - 2003/12/13
        - Fixed H5Giterate to avoid re-using index parameter after iteration
            callback has been called (allows iteration callback to modify the
            index parameter itself).  QAK - 2003/12/06
        - Fixed various floating-point conversion problems, including a
            change which could corrupt data when converting from double->float.
            QAK - 2003/11/24
        - Changed "single process" metadata writing in library to collective
            I/O by all processes, in order to guarantee correct data being
            written with MPI-I/O.  QAK - 2003/11/20
        - Fixed problems with fill values and variable-length types and also
            I/O on VL values that were set to NULL.  QAK - 2003/11/08
        - Fixed problems with MPI datatypes that caused ASCI Q machine to
            hang.  QAK - 2003/10/28
        - Removed HDF5_MPI_PREFER_DERIVED_TYPES environment variable support,
            since it had no benefit.  QAK - 2003/10/28
        - Single hyperslab selections (which were set with only one call to
            H5Sselect_hyperslab) that had dimensions that could be "flattened"
            but were interspersed with dimensions that could not be flattened
            were not correctly handled, causing core dumps.  QAK - 2003/10/25
        - Fixed incorrect datatype of the third parameter to the Fortran90
            h5pset(get)_cache_f subroutine (INTEGER to INTEGER(SIZE_T)) 
            EIP - 2003/10/13
        - Fixed problems with accessing variable-length data datatypes on
            Crays.  QAK - 2003/10/10
        - Fixed potential file corruption bug when too many object header
            messages (probably attributes, from a user perspective) were
            inserted into an object header and certain other conditions were
            met.  QAK - 2003/10/08
        - Changed implementation of internal ID searching algorithm to avoid
            O(n) behavior for many common cases.  QAK - 2003/10/06
        - Allow partial parallel writing to compact datasets.  QAK - 2003/10/06
        - Correctly create reference to shared datatype in attribute, instead
            of making a copy of the shared datatype in the attribute.
            QAK - 2003/10/01
        - Revert changes which caused files >2GB to fail when created with
            MPI-I/O file driver on certain platforms.  QAK - 2003/09/16
        - Allow compound datatypes to grow in size.  SLU - 2003/09/10
        - Detect if a type is already packed before attempting to pack it
            again or check if it is locked.  SLU - 2003/09/10
        - Corrected bug when opening a file twice with read-only permission
            for one open and then closing the read-only access file ID would
            generate an error.  QAK - 2003/09/10
        - Corrected bug in repeated calls to H5Pget_access_plist() which would
            incorrectly manage reference counts of internal information and
            eventually blow up.  QAK - 2003/09/02
        - Return rank of the array datatype on successful call to
            H5Tget_array_dims().  QAK - 2003/08/30
        - Corrected bug in H5Tdetect_class which was not correctly detecting
            datatype classes of fields in nested compound datatypes in some
            circumstances.  QAK - 2003/08/30
        - Corrected bug in sieve buffer code which could cause loss of data
            when a small dataset was created and deleted in quick succession.
            QAK - 2003/08/27
        - Corrected bug in H5Gget_objname_by_idx which was not allowing NULL
            for the name when just querying for the object name's length.
            QAK - 2003/08/25
        - Corrected bug in variable-length string handling which could
            generate a core dump on writing variable-length strings as part
            of a compound datatype on certain architectures.  QAK - 2003/08/25
        - Corrected bug in H5Tget_native_type which would incorrectly compute
            the size of certain compound datatypes and also incorrectly
            compute the offset of the last field for those compound datatypes.
            QAK - 2003/08/25
        - Corrected bug in H5Tget_native_type which would drop string datatype
            metadata (padding, etc.)  QAK - 2003/08/25
        - Corrected bugs in H5Gget_num_objs, H5Gget_objname_by_idx and
            H5Gget_objtype_by_idx to allow them to accept location IDs, not just
            group IDs.  QAK - 2003/08/21
        - Corrected bug when using scalar dataspace for memory selection and
            operating on chunked dataset.  QAK - 2003/08/18
        - Corrected bugs with multiple '/' characters in names for H5Glink
            and H5Gunlink.  QAK - 2003/08/16
        - Corrected bug with user blocks that didn't allow a user block to
            be inserted in front of a file after the file was created.
            QAK - 2003/08/13
        - Corrected errors with using point selections to access data in
            chunked datasets.  QAK - 2003/07/23
        - Corrected error with variable-length datatypes and chunked datasets
            caused H5Dwrite to fail sometimes.  QAK - 2003/07/19
        - Modified library and file format to support storing indexed storage
            (chunked dataset) B-tree's with non-default internal 'K' values.
            QAK - 2003/07/15
        - Returned H5T_BKG_TEMP support to library after it was accidentally
            removed.  QAK - 2003/07/14

    Configuration
    -------------
	- Configure can now use any tr command.  No more need for
	  defining variable TR nor is it supported. -AKC 2006/05/19
        - Parallel I/O with the MPI-I/O driver will no longer work if the
            filesystem is not POSIX compliant.  The "HDF5_MPI_1_METAWRITE"
            environment variable has been removed.  QAK - 2004/01/30
        - Fixed the error that cause "make install" to fail because of the
            macro definition syntax of "prefix?=..."  AKC - 2003/07/22

    Performance
    -------------
        - Optimized I/O for enumerated datatypes that are a superset of source
            enumerated datatype.  QAK - 2005/03/19
        - More optimizations to inner loops of datatype conversions for
            integers and floats which give a 10-50% speedup.  QAK - 2003/11/07
        - Hoisted invariant 'if/else's out of inner datatype conversion loop for
            integer and floating-point values, giving about a 20% speedup.
            QAK - 2003/10/20

    Tools
    -----
        - Fixed h5dump regarding the display of blocks in hyperslab
           selections. PVN 2008/01/16
        - Fixed h5diff regarding the display of NaN (Not a Number)
           values. PVN 2008/01/16
	- Fixed h5dump regarding the parsing of binary output parameters. 
           PVN 2008/01/16
	- Fixed memory problems in h52gif and gif2h5. PVN 2008/01/16
	- Fixed h5repack dealing with NULL references. PVN 2008/01/16 
        - Fixed h5dump & h5ls to display attributes in "name" order, rather
           than the order they are encountered in the object header.
           QAK - 2007/10/04
        - Fixed h5dump regarding the display of named datatypes
           attributes. PVN 2007/03/13
        - Fixed h5dump regarding the display of group comments. PVN
           2007/03/13
        - Fixed h5dump regarding the display of hardlinks pointing 
           to the root group. PVN 2007/03/13
        - Fixed h5diff percentage option -p. PVN 2007/03/05
        - Fixed h5dump that caused array indices greater than 2 ^32-1
           not to be printed correctly - PVN 2007/2/19
        - Fixed h5dump to print attributes data in ASCII if -r option is used.
	    AKC - 2004/11/18
        - Fixed space utilization reported in h5ls to correct error in formula
            used.  QAK - 2004/10/22
        - Fixed h5redeploy which sometimes complain too many argument for the
            test command. (The complain did not hinder the h5redploy to
            proceed correctly.) AKC - 2003/11/03
        - Fixed a segmentation fault of h5diff when percentage option is used.
            AKC - 2003/08/27
        - Switched away from tools using internal "fixtype" function(s) to use
            H5Tget_native_type() internally.  QAK - 2003/08/25


    Documentation 
    ------------- 


    F90 APIs
    --------
        - h5pget_driver_f was returning information that could not be
          interpreted by fortran application program; fixed. EIP - 2005/04/10 


Platforms Tested
================
Platforms marked with * were not tested for hdf5-1.8.0-rc* release
(This information is somewhat out of date and may be inaccurate.  It will be
    updated for a later release)

*   AIX 5.2 (32/64 bit)           xlc 8.0.0.11
                                  xlC 8.0
                                  xlf 10.01.0000.0 
                                  mpcc_r 6.0.0.8
                                  mpxlf_r 8.1.1.7
*    AIX 5.3 (32/64 bit)           xlc 7.0.0.8
                                  xlC 7.0.0.8
                                  xlf  09.01.0000.0007
*   Cray X1 water 3.0.35          Cray Standard C Version 5.4.0.7.4
                                  Cray Fortran 5.4.0.7.3
                                  Cray C++ 5.4.0.7.4
    FreeBSD 6.2-STABLE i386       gcc 3.4.6 [FreeBSD] 20060305
    (duty)                        g++ 3.4.6 [FreeBSD] 20060305
                                  gcc 4.2.1 20080123
                                  g++ 4.2.1 20080123
                                  gfortran 4.2.1 20070620
    FreeBSD 6.2-STABLE amd64      gcc 3.4.6 [FreeBSD] 20060305
    (liberty)                     g++ 3.4.6 [FreeBSD] 20060305
                                  gcc 4.2.1 20080123
                                  g++ 4.2.1 20080123
                                  gfortran 4.2.1 20080123

*   HP-UX B.11.23                 HP aC++/ANSI C B3910B A.06.00
                                  HP F90 v2.9.2
                                  HP aC++/ANSI C B3910B A.06.00
    IRIX64 6.5 (64 & n32)         MIPSpro cc 7.4.4m
                                  F90 MIPSpro 7.4.4m 
                                  C++ MIPSpro cc 7.4.4m
				 
*   Linux 2.6.9 (RHEL4)           Intel 10.0 compilers
    (abe.ncsa.uiuc.edu)
    Linux 2.4.21-47               gcc 3.2.3 20030502
    (osage)
    Linux 2.6.9-42.0.10           gcc 3.4.6 20060404
    (kagiso)                      PGI 7.0-7 (pgcc, pgf90, pgCC)
                                  Intel 9.1 (icc, ifort, icpc)
    Linux 2.6.16.27 x86_64 AMD    gcc 4.1.0 (SuSE Linux), g++ 4.1.0, g95 (GCC 4.0.3)
    (smirom)                      PGI 6.2-5 (pgcc, pgf90, pgCC)
                         	  Intel 9.1 (icc, iort, icpc)
    Linux 2.6.5-7.252.1-rtgfx #1 
          SMP ia64                Intel(R) C++ Version 9.0
    (cobalt)                      Intel(R) Fortran Itanium(R) Version 9.0 
                                  SGI MPI
    SunOS 5.8 32,46               Sun WorkShop 6 update 2 C 5.3
     (Solaris 2.8)                Sun WorkShop 6 update 2 Fortran 95 6.2
                                  Sun WorkShop 6 update 2 C++ 5.3
*   SunOS 5.10 i86pc              Sun C 5.7
                                  Sun Fortran 95 8.1
                                  Sun C++ 5.7
    SunOS 5.10                    cc: Sun C 5.8 
    (linew)                       f90: Sun Fortran 95 8.2 
                                  CC: Sun C++ 5.8 
    Xeon Linux 2.4.21-32.0.1.ELsmp-perfctr-lustre
    (tungsten)	                  gcc 3.2.2 20030222
                                  Intel(R) C++ Version 9.0
                                  Intel(R) Fortran Compiler Version 9.0
    IA-64 Linux 2.4.21.SuSE_292.til1 ia64
    (NCSA tg-login)               gcc 3.2.2
                                  Intel(R) C++ Version 8.1
                                  Intel(R) Fortran Compiler Version 8.1
				  mpich-gm-1.2.5..10-intel-r2
    Windows XP                    
				  Visual Studio .NET
                                  Visual Studio 2005 w/ Intel Fortran 9.1
                                  Cygwin(native gcc compiler and g95)
				  MinGW(native gcc compiler and g95)
    Windows XP x64                
			          Visual Studio 2005 w/ Intel Fortran 9.1
    Windows Vista			
			          Visual Studio 2005

    MAC OS  10.4 (Intel)          gcc i686-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 
                                  G95 (GCC 4.0.3 (g95 0.91!) Nov 21 2006)
*    Alpha Open VMS 7.3


Supported Configuration Features Summary
(This table was not modified for 1.8.0-rc* release; for information contact help@hdfgroup.org)
========================================

    In the tables below
          y   = tested and supported
          n   = not supported or not tested in this release
          x   = not working in this release
          dna = does not apply
          ( ) = footnote appears below second table
          <blank> = testing incomplete on this feature or platform 

Platform                 C        F90    F90      C++   zlib  SZIP
                         parallel        parallel
SunOS5.8 64-bit          n        y      n        y     y     y
SunOS5.8 32-bit          n        y      n        y     y     y
SunOS5.10 64-bit         y(1)     y      n        y     y     y
SunOS5.10 32-bit         y(1)     y      n        y     y     y
IRIX64_6.5 64-bit        n        y      y        y     y     y
IRIX64_6.5 32-bit        n        n      n        n     y     y
Cray XT3           (16)  n        n      n        n     n     n
AIX-5.2 & 5.3 32-bit     y        y      y        y     y     y
AIX-5.2 & 5.3 64-bit     y        y      y        y     y     y
Windows XP               n        y(15)  n(15)    y     y     y
Windows XP x64           n        y(15)  n(15)    y     y     y
Windows Vista            n        n      n        y     y     y
Mac OS X 10.4 PowerPC    n               n
FreeBSD 4.11             n        n      n        y     y     y
RedHat EL3  W       (3)  y(1a)    y(10)  y(1a)    y     y     y
RedHat EL3  W Intel (3)  n        y      n        y     y     n
RedHat EL3  W PGI   (3)  n        y      n        y     y     n
SuSe x86_64 gcc  (3,12)  y(1a)    y(11)  n        y     y     y
SuSe x86_64 Int  (3,12)  n        y(13)  n        y     y     n
SuSe x86_64 PGI  (3,12)  n        y(8)   n        y     y     y
Linux 2.4 Xeon C 
    Lustre Intel  (3,6)  n        y      n        y     y     n
Linux 2.6 SuSE ia64 C 
    Intel         (3,7)  y        y      y        y     y     n
Linux 2.6 SGI Altix 
    ia64 Intel      (3)  y        y      y        y     y     y
Alpha OpenVMS 7.3.2      n        y      n        y     n     n



Platform                 Shared  Shared    Shared    static-  Thread-  
                         C libs  F90 libs  C++ libs  exec     safe     
Solaris2.8 64-bit        y       y         y         x        y        
Solaris2.8 32-bit        y       y         y         x        y        
Solaris2.10 64-bit       y                           x        y        
Solaris2.10 32-bit       y                           x        y        
IRIX64_6.5 64-bit        y       y         n         y        y        
IRIX64_6.5 32-bit        y       dna       y         y        y        
HPUX11.00                y       n         y         x        n        
HPUX11.23-32bit          y       n         n         y        n        
HPUX11.23-64bit          y       dna       n         y        n        
Cray XT3           (16)  n       n         n         n        n        
AIX-5.2 & 5.3 32-bit     n       n         n         y        n        
AIX-5.2 & 5.3 64-bit     n       n         n         y        n        
Windows XP               y       y(15)     y         y        y        
Windows XP x64           y       y(15)     y         y        y        
Windows Vista            y       n         n         y        y        
Mac OS X 10.3            y                           y        n        
Mac OS X 10.4 PowerPC
FreeBSD 4.11             y       n         y         y        y        
RedHat EL3  W       (3)  y       y(10)     y         y        y        
RedHat EL3  W Intel (3)  y       y         y         y        n        
RedHat EL3  W PGI   (3)  y       y         y         y        n        
SuSe x86_64 W GNU (3,12) y       y         y         y        y        
SuSe x86_64 W Int (3,12) y       y         y         y(14)    n        
SuSe x86_64 W PGI (3,12) y       y         y         y(14)    n        
Linux 2.4 Xeon C 
    Lustre Intel    (6)  y       y         y         y        n        
Linux 2.4 SuSE 
    ia64 C Intel    (7)  y       y         y         y        n        
Linux 2.4 SGI Altix 
    ia64 Intel           y                           y        n        
Alpha OpenVMS 7.3.2      n       n         n         y        n        

    Notes: (1)  Using mpich 1.2.6.
           (1a) Using mpich2 1.0.6.
           (2)  Using mpt and mpich 1.2.6.
           (3)  Linux 2.6 with GNU, Intel, and PGI compilers, as indicated.  
                  W or C indicates workstation or cluster, respectively.

           (6)  Linux 2.4.21-32.0.1.  Xeon cluster with ELsmp_perfctr_lustre 
                  and Intel compilers
           (7)  Linux 2.4.21, SuSE_292.till.  Ia64 cluster with Intel compilers
           (8)  pgf90
           (9)  With Compaq Visual Fortran 6.6c compiler.
           (10) With PGI and Absoft compilers.
           (11) PGI and Intel compilers for both C and Fortran
           (12) AMD Opteron x86_64
           (13) ifort
           (14) Yes with C and Fortran, but not with C++
	   (15) Using Visual Studio 2005 or Cygwin
           (16) Not tested for this release.
    Compiler versions for each platform are listed in the preceding
    "Platforms Tested" table.



Known Problems
==============
* We discovered two problems when running collective IO parallel HDF5 tests 
  with chunking storage on  ChaMPIon MPI compiler on tungsten, a linux 
  cluster at NCSA.
  Under some complex selection cases, 
  1) MPI_Get_element returns the wrong value.
  2) MPI_Type_struct also generates wrong derived data type and corrupt data
     may be generated.
  This only happens when turning on collective IO with chunking storage 
  with some complex selections. We haven't found these problems on other
  MPI-IO compilers. If you encounter these problems, you may use Independent IO
  instead.

  Change the following line in your code:
  H5Pset_dxpl_mpio(xfer_plist, H5FD_MPIO_COLLECTIVE);

  to
  H5Pset_dxpl_mpio(xfer_plist, H5FD_MPIO_INDEPENDENT);

  KY - 2007/08/24

* For SNL, spirit/liberty/thunderbird: The serial tests pass but parallel
  tests failed with MPI-IO file locking message. AKC - 2007/6/25.
* On Intel 64 Linux cluster (RH 4, Linux 2.6.9) with Intel 10.0 compilers use
  -mp -O1 compilation flags to build the libraries. Higher level of optimization 
  causes failures in several HDF5 library tests. 
* For HPUX 11.23 many tools tests failed for 64-bit version when linked to the
  shared libraries (tested for 1.8.0-beta2)
* For SNL, Red Storm: only paralle HDF5 is supported.  The serial tests pass
  and the parallel tests also pass with lots of non-fatal error messages.
* For LLNL, uP: both serial and parallel pass.  Zeus: serial passes but
  parallel fails with a known proglem in MPI.  ubgl: serial passes but
  parallel fails. 
* on SUN 5.10 C++ test fails in the "Testing Shared Datatypes with Attributes" test 
* configuring with --enable-debug=all produces compiler errors on most
  platforms.  Users who want to run HDF5 in debug mode should use
  --enable-debug rather than --enable-debug=all to enable debugging
  information on most modules.
* On Mac OS 10.4, test/dt_arith.c has some errors in conversion from long
  double to (unsigned) long long and from (unsigned)long long to long double. 
* On Altix SGI with Intel 9.0 testmeta.c would not compile with -O3
  optimization flag.
* On VAX, Scaleoffset filter isn't supported. The filter cannot be applied to
  HDF5 data generated on VAX. Scaleoffset filter only supports IEEE standard
  for floating-point data.
* On Cray X1, a lone colon on the command line of h5dump --xml (as in
  the testh5dumpxml.sh script) is misinterpereted by the operating system
  and causes an error.
* On mpich 1.2.5 and 1.2.6, we found that if more than two processes
  contribute no IO and the application asks to do IO with collective, we found
  that when using 4 processors, a simple collective write will be hung
  sometimes. This can be verified with t_mpi test under testpar.
* On IRIX6.5, when C compiler version >7.4, the complicate MPI derived data type
  code will work. However, the user should be aware to enlarge MPI_TYPE_MAX environment 
  variable to some certian value in order to use collective irregular selection code.
  For example, the current parallel HDF5 test needs to enlarge MPI_TYPE_MAX to 
  200,000 to make the test pass.
* The dataset created or rewritten with the v1.6.3 library or after can't 
  be read with the v1.6.2 library or before when Fletcher32 EDC(filter) is 
  enabled.  There was a bug in the calculating code of the Fletcher32 
  checksum in the library before v1.6.3.  The checksum value wasn't consistent 
  between big-endian and little-endian systems.  This bug was fixed in 
  Release 1.6.3.  However, after fixing the bug, the checksum value is no 
  longer the same as before on little-endian system.  The library release 
  after 1.6.4 can still read the dataset created or rewritten with the library
  of v1.6.2 or before.  SLU - 2005/6/30
* For the version 6(6.02 and 6.04) of Portland Group compiler on AMD Opteron
  processor, there's a bug in the compiler for optimization(-O2).  The library
  failed in several tests but all related to multi driver.  The problem has 
  been reported to the vendor.  
* On IBM AIX systems, parallel HDF5 mode will fail some tests with error
  messages like "INFO: 0031-XXX ...".  This is from the command poe.
  Set the environment variable MP_INFOLEVEL to 0 to minimize the messages
  and run the tests again.
  The tests may fail with messages like "The socket name is already
  in use".  HDF5 does not use sockets (except for stream-VFD).  This is
  due to problems of the poe command trying to set up the debug socket.
  Check if there are many old /tmp/s.pedb.* staying around.  These are
  sockets used by the poe command and left behind due to failed commands.
  Ask your system administrator to clean them out.  Lastly, request IBM
  to provide a mean to run poe without the debug socket.

* The C++ library's tests fails when compiling with PGI C++ compiler.  The
  workaround until the problem is correctly handled is to use the 
  flag "--instantiate=local" prior to the configure and build steps, as:
        setenv CXX "pgCC --instantiate=local"  for pgCC 5.02 and higher


* The stream-vfd test uses ip port 10007 for testing. If another
  application is already using that port address, the test will hang
  indefinitely and has to be terminated by the kill command. To try the
  test again, change the port address in test/stream_test.c to one not
  being used in the host.

* The --enable-static-exec configure flag fails to compile for Solaris
  platforms. This is due to the fact that not all of the system
  libraries on Solaris are available in a static format.

  The --enable-static-exec configure flag also fails to correctly compile
  on IBM SP2 platform for the serial mode. The parallel mode works fine
  with this option.
  
  It is suggested that you don't use this option on these platforms
  during configuration.

* With the gcc 2.95.2 compiler, HDF 5 uses the `-ansi' flag during
  compilation. The ANSI version of the compiler complains about not being
  able to handle the `long long' datatype with the warning:

        warning: ANSI C does not support `long long'
  
  This warning is innocuous and can be safely ignored.


* The Stream VFD was not tested yet under Windows. It is not supported
  in the TFLOPS machine.


* The ./dsets tests failed in the TFLOPS machine if the test program,
  dsets.c, is compiled with the -O option.  The hdf5 library still works
  correctly with the -O option.  The test program works fine if it is
  compiled with -O1 or -O0.  Only -O (same as -O2) causes the test
  program to fail.

* Certain platforms give false negatives when testing h5ls:
    - Cray J90 and Cray T90IEEE give errors during testing when displaying
      some floating-point values. These are benign differences due to
      the different precision in the values displayed and h5ls appears to
      be dumping floating-point numbers correctly.

* Before building HDF5 F90 Library from source on Crays 
  replace H5Aff.f90, H5Dff.f90 and H5Pff.f90 files in the fortran/src
  subdirectory in the top level directory with the Cray-specific files
  from this site:
       ftp://www.hdfgroup.uiuc.edu/pub/outgoing/hdf5/hdf5-1.8.0-pre/PATCH/

* Not all platforms behave correctly with szip's shared libraries. Szip is
  disabled in these cases, and a message is relayed at configure time. Static
  libraries should be working on all systems that support szip, and should be
  used when shared libraries are unavailable. There is also a configure error
  on Altix machines that incorrectly reports when a version of szip without
  an encoder is being used.

* On some platforms that use Intel and Absoft compilers to build HDF5 fortran library,
  compilation may fail for fortranlib_test.f90, fflush1.f90 and fflush2.f90
  complaining about exit subroutine. Comment out the line 
  IF (total_error .ne. 0) CALL exit (total_error)

* On IA32 and IA64 systems, if you use a compiler other than GCC (such as
  Intel's ecc or icc compilers), you will need to modify the generated
  "libtool" program after configuration is finished. On or around line 104 of
  the libtool file, there are lines which look like:

      # How to pass a linker flag through the compiler.
      wl=""

  change these lines to this:

      # How to pass a linker flag through the compiler.
      wl="-Wl,"

  UPDATE: This is now done automatically by the configure script. However, if
  you still experience a problem, you may want to check this line in the
  libtool file and make sure that it has the correct value.

* Information about building with PGI and Intel compilers is available in
  INSTALL file sections 5.7 and 5.8

* On at least one system, (SDSC DataStar), the scheduler (in this case
  LoadLeveler) sends job status updates to standard error when you run 
  any executable that was compiled with the parallel compilers.

  This causes problems when running "make check" on parallel builds, as 
  many of the tool tests function by saving the output from test runs,
  and comparing it to an exemplar.  

  The best solution is to reconfigure the target system so it no longer
  inserts the extra text.  However, this may not be practical.

  In such cases, one solution is to "setenv HDF5_Make_Ignore yes" prior to 
  the configure and build.  This will cause "make check" to continue after 
  detecting errors in the tool tests.  However, in the case of SDSC DataStar,
  it also leaves you with some 150 "failed" tests to examine by hand.

  A second solution is to write a script to run serial tests and filter
  out the text added by the scheduler.  A sample script used on SDSC
  DataStar is given below, but you will probably have to customize it 
  for your installation.  

  Observe that the basic idea is to insert the script as the first item 
  on the command line which executes the the test.  The script then 
  executes the test and filters out the offending text before passing
  it on.

        #!/bin/csh

        set STDOUT_FILE=~/bin/serial_filter.stdout
        set STDERR_FILE=~/bin/serial_filter.stderr

        rm -f $STDOUT_FILE $STDERR_FILE

        ($* > $STDOUT_FILE) >& $STDERR_FILE

	set RETURN_VALUE=$status

        cat $STDOUT_FILE

        tail +3 $STDERR_FILE

	exit $RETURN_VALUE

  You get the HDF make files and test scipts to execute your filter script
  by setting the environment variable "RUNSERIAL" to the full path of the 
  script prior to running configure for parallel builds.  Remember to 
  "unsetenv RUNSERIAL" before running configure for a serial build.

  Note that the RUNSERIAL environment variable exists so that we can 
  can prefix serial runs as necessary on the target system.  On DataStar,
  no prefix is necessary.  However on an MPICH system, the prefix might
  have to be set to something like "/usr/local/mpi/bin/mpirun -np 1" to
  get the serial tests to run at all.

  In such cases, you will have to include the regular prefix in your
  filter script.

* H5Ocopy() does not copy reg_ref attributes correctly when shared-message
  is turn on. The value of the reference in the destination attriubte is
  wrong. This H5Ocopy problem will affect h5copy tool

%%%%1.6.7%%%%   Release Information for hdf5-1.6.7 (31/January/08)

HDF5 version 1.6.7 released on Thu Jan 31 21:09:10 CST 2008
================================================================================

INTRODUCTION
============
This document describes the differences between HDF5-1.6.6 and HDF5-1.6.7  
It contains information on the platforms tested and known problems in
HDF5-1.6.7. For more details, check the HISTORY.txt file in the HDF5 source.

HDF5 documentation can be found in the distributed release source code
in the subdirectory doc/html/ or on the THG (The HDF Group) FTP server: 

     ftp://ftp.hdfgroup.org/HDF5/docs/

Documentation for the current release in the HDF5 Release 1.6.x series is 
also on the HDF web site:

     http://hdfgroup.org/HDF5/doc1.6/

For more information, see the HDF5 home page:

     http://hdfgroup.org/products/hdf5/

If you have any questions or comments, please see the HDF Support page
for a list of available resources:

     http://hdfgroup.org/services/support.html


CONTENTS
========
- New Features
- Support for New Platforms, Languages and Compilers
- Bug Fixes since HDF5-1.6.6
- Documentation
- Platforms Tested
- Supported Configuration Features Summary
- Known Problems


New Features
============
    Configuration:
    -------------------------
    '--enable-stream-vfd' and '--disable-stream-vfd' are no longer valid 
    configure options because the stream I/O driver has ben removed from
    the distribution.

    Source code distribution
    ========================
    Library:
    --------
    The stream I/O driver is not included with the HDF5 Library in this
    release.  The source code files hdf5/src/H5FDstream.c and
    hdf5/src/H5FDstream.h and the driver ENUM value H5FD_STREAM have been 
    removed.

    Parallel Library:
    -----------------
    None      

    Tools:
    ------
    None

    F90 API:
    --------
    None

    C++ API:
    --------
    None


Support for New Platforms, Languages and Compilers
==================================================

No new platorms, languages, or compilers are supported in this release.


Bug Fixes since HDF5-1.6.6 Release
==================================

    Library
    -------
        - H5Iget_name could not be used with an object identifier returned  
            by H5Rdereference; the function would not be able to determine 
            a valid object name.  It has been fixed.  SLU - 2008/1/30 
        - Changed library's behavior for reading files that might have
            corrupted object header information from a previous (buggy)
            version of the library.  By default, the library now rebuilds the
            correct object header information instead of issuing an error.
            Previous "strict" file format interpretation can be enabled with
            the "--enable-strict-format-checks" configure option.
            QAK - 2008/01/13
        - Fixed bug in H5Epush() which was clearing the error stack before
            pushing new error value.  QAK - 2007/08/23
        - Fixed bug in H5Ewalk() which was not passing back the return value
            from error stack walking callback.  QAK - 2007/08/23


    Configuration
    -------------
     None


    Performance
    -------------
     None
   

    Tools
    -----
     None


    Documentation 
    ------------- 
     None


    F90 API
    -------
     None

                                
    C++ API
    -------
     None


Documentation
=============
    HDF5 documentation can be found in the distributed release source 
    code in the subdirectory doc/html/ (start with index.html) or on the 
    THG (The HDF Group) FTP server: 

         ftp://ftp.hdfgroup.org/HDF5/docs/

    Online documentation for the current release in the HDF5 Release 1.6.x 
    series can be found on the THG web site:

         http://hdfgroup.org/HDF5/doc1.6/

    A listing of interface changes from release to release can be found
    in the document "HDF5 Software Changes from Release to Release":

         http://hdfgroup.org/HDF5/doc1.6/ADGuide/Changes.html
 
    Since the stream I/O driver is not included in this release, the 
    functions H5Pset_fapl_stream and H5Pget_fapl_stream and the stream 
    ENUM value H5FD_STREAM have been removed from the documentation.


Platforms Tested
================

    AIX 5.2 (32/64 bit)           xlc 8.0.0.11
    (datastar)                    xlC 8.0
                                  xlf 10.01.0000.0002

    FreeBSD 6.2 (32- and 64-bit)  gcc  and g++3.4.6
    (duty and liberty)            gcc and g++ 4.2.1

    IRIX64 6.5                    MIPSpro cc 7.4.4m
    (ucar mop1 64 & n32)          F90 MIPSpro 7.4.4m (64 only)
                                  C++ MIPSpro cc 7.4.4m

    Linux 2.4.21-47.ELsmp #1 SMP  gcc 3.2.3
        i686 i386 GNU/Linux
    (osage)

    Linux 2.6.9-42.0.10.ELsmp #1  gcc (GCC) 3.4.6
         SMP i686 i386             G95 (GCC 4.0.3 (g95 0.91!) April 18 2007)
    (kagiso)                      PGI C, Fortran, C++ 7.0-7 32-bit 
                                  Intel(R) C Compiler for 32-bit 
                                      applications, Version 9.1 
                                  Intel(R) C++ Compiler for 32-bit 
                                      applications, Version 9.1
                                  Intel(R) Fortran Compiler for 32-bit 
                                      applications, Version 9.1 
                                  Absoft 32-bit Fortran 95 10.0.4
                                  MPICH mpich2-1.0.6p1 compiled with  
                                  gcc 4.2.1 and G95 (GCC 4.0.3 (g95 0.91!) 

    Linux 2.6.16.46-0.12-debug #1 Intel(R) C++ Version 10.0.025
        SMP ia64 GNU/Linux        Intel(R) Fortran Itanium(R) Version 10.0.025
    (ucar hir1)                   

    Linux 2.6.16.46-0.14-smp #1   Intel(R) C++ for Intel(R) EM64T Ver. 9.1.037
        SMP x86_64 GNU/Linux      Intel(R) Fortran Intel(R) EM64T Ver. 9.1.031
    (smirom)                      PGI C, Fortran, C++ Version 7.0-7
                                         for 64-bit target on x86-64
                                  tested for both 32- and 64-bit binaries

    Linux 2.6.5-7.287.3-sn2 #1    Intel(R) C++ Version 9.0
        Altix SMP ia64            Intel(R) Fortran Itanium(R) Version 9.0
    (cobalt)                      SGI MPI

    SunOS 5.8 32- and 64-bit      Sun WorkShop 6 update 2 C 5.3
    (sol)                         Sun WorkShop 6 update 2 Fortran 95 6.2
                                  Sun WorkShop 6 update 2 C++ 5.3

    SunOS 5.10 32- and 64-bit     Sun WorkShop 6 update 2 C 5.8
    (linew)                       Sun WorkShop 6 update 2 Fortran 95 8.2
                                  Sun WorkShop 6 update 2 C++ 5.8
                                  Patch 121019-06 

    Xeon Linux 2.4.21-32.0.1.ELsmp-perfctr-lustre
    (tungsten)                    Intel(R) C++ Version 9.0
                                  Intel(R) Fortran Compiler Version 9.0
                                  PGI C Version 6.0-5
                                  PGI C++ Version 6.0-5
                                  PGI Fortran Version 6.0-5
                                  gcc (GCC) 3.2.2 (Red Hat Linux 3.2.2-5)

    Xeon Linux 2.6.9-42.0.10.EL_lustre-1.4.10.1smp
    (abe)                         Intel(R) C++ Version 10.0
                                  Intel(R) Fortran Compiler Version 10.0
                                  Open MPI 1.2.2

    IA-64 Linux 2.4.21-309.tg1 #1 SMP
        ia64                      gcc (GCC) 3.2.2
    (NCSA tg-login)               Intel(R) C++ Version 8.1
                                  Intel(R) Fortran Compiler Version 8.1
                                  mpich-gm-1.2.6..14-intel-r2

    Windows XP                    Visual Studio 6.0
                                  Visual Studio .NET (with Intel Fortran 9.1)
                                  Visual Studio 2005 (with Intel Fortran 9.1)
                                  cygwin (gcc 3.4.4)

    Windows Vista                 Visual studio 2005
    MAC OS X Intel                Darwin 8.10.1
                                  i686-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1
                                  g95 0.91


Supported Configuration Features Summary
========================================

Key:   y   = Tested and supported
       n   = Not supported or not tested in this release
       C   = Cluster
       W   = Workstation
       ( ) = Footnote appears below second table

Platform                              C        F90  F90      C++  zlib  SZIP
                                      parallel      parallel
Solaris2.8 32-bit                     n        y    n        y    n     y
Solaris2.8 64-bit                     n        y    n        n    y     y
Solaris2.10 32-bit                    n        y    n        y    y     y
Solaris2.10 64-bit                    n        y    n        n    y     y
IRIX64_6.5 32-bit                     n        n    n        n    y     y
IRIX64_6.5 64-bit                     n        y    n        n    y     y
WinXP Visual Studio 6.0               n        n    n        y    y     y
WinXP CYGWIN                          n        n    n        y    y     y
WinXP 2005                            n        y    n        y    y     y
WinXP .Net                            n        y    n        y    y     y
WinVista 2005                         n        n    n        y    y     y
Mac OS X 10.4.10                      n        y    n        y    y     y
AIX-5.2 & 5.3 32- and 64-bit          y        y    y        y    y     y
FreeBSD 6.2 32- and 64-bit            n        n    n        y    y     y
RedHat Linux 2.4.21              W    n        n    n        n    y     n
RedHat Linux 2.6.9-42 i686 GNU (1) W  y        y    y        y    y     y
RedHat Linux 2.6.9-42 i686 Intel   W  n        y    n        y    y     n
RedHat Linux 2.6.9-42 i686 PGI     W  n        y    n        y    y     n
SuSE Linux 2.6.16 x86_64 GNU (1) W    y        y    n        y    y     y
SuSE Linux 2.6.16 x86_64 Intel   W    n        y    n        y    y     n
SuSE Linux 2.6.16 x86_64 PGI     W    n        y    n        y    y     n
RHEL 4 Linux 2.6.9 Xeon Lustre   C    n        y    n        y    y     y
RedHat Linux 2.4 Xeon Lustre     C    n        y    n        y    y     n
SuSE Linux 2.4 ia64              C    y        y    y        y    y     y
SuSe Linux 2.6.5 SGI Altix ia64       n        y    n        y    y     y


Platform                              Shared        static-  Thread-  
                                      libraries(4)  exec     safe     
Solaris2.8 32- and 64-bit             y             n        y        
Solaris2.10 32- and 64-bit            y             n        y        
IRIX64_6.5 32-bit                     y             n        y        
IRIX64_6.5 64-bit                     y             n        y        
WinXP Visual Studio 6.0               y             n        n        
WinXP CYGWIN                          y             n        n        
WinXP 2005                            y             n        n        
WinXP .Net                            y             n        n        
WinVista 2005                         y             n        n        
Mac OS X 10.4.10                      y             n        n        
AIX-5.2 & 5.3 32- and 64-bit          n             n        n        
FreeBSD 6.2 32- and 64-bit            y             n        n        
RedHat Linux 2.4.21              W    y             n        n        
SuSE Linux 2.6.9-42 i686 GNU (1) W    y             n        y        
SuSE Linux 2.6.9-42 i686 Intel   W    y             n        n        
SuSE Linux 2.6.9-42 i686 PGI     W    n             n        n        
SuSE Linux 2.6.16 x86_64 GNU (1) W    y             n        y        
SuSE Linux 2.6.16 x86_64 Intel   W    y             n        n        
SuSE Linux 2.6.16 x86_64 PGI     W    n             n        n        
RHEL 4 Linux 2.6.9 Xeon Lustre   C    y             n        n        
RedHat Linux 2.4 Xeon Lustre     C    y             n        n        
SuSE Linux 2.4 ia64              C    y             n        n        
SuSe Linux 2.6.5 SGI Altix ia64       n             n        n        

Compiler versions for each platform are listed in the "Platforms Tested" 
table found elsewhere in this file (RELEASE.txt).  Unless otherwise noted, 
compilers used are the system compilers.

Footnotes:
(1) Fortran compiled with g95.


Known Problems
==============
* We discovered two problems when running collective IO parallel HDF5 tests
  with chunking storage with the ChaMPIon MPI compiler on tungsten, a Linux
  cluster at NCSA.
  Under some complex selection cases, 
  1) MPI_Get_element returns the wrong value.
  2) MPI_Type_struct also generates the wrong derived datatype and corrupt 
     data may be generated.
  This only happens when turning on collective IO with chunking storage
  with some complex selections. We haven't found these problems on other 
  MPI-IO compilers. If you encounter these problems, you may use Independent 
  IO instead.

  To avoid this problem, change the following line in your code:
  H5Pset_dxpl_mpio(xfer_plist, H5FD_MPIO_COLLECTIVE);

  to
  H5Pset_dxpl_mpio(xfer_plist, H5FD_MPIO_INDEPENDENT);
 
  KY - 2007/08/24

* QSC (an HP alpha-based OSF1 cluster) does not create h5pfc correctly. It
  does not include the -lmpi properly.  This will be fixed in the next
  release.  AKC - 2007/08/07.

* On IRIX64 6.5 (UCAR SGI mop1), when testing HDF5 tools with an HDF5 shared
  library, especially for h5repacktst and h52gifgentst, the following (or a
  similar) error message may appear:
  "523648:lt-h5repacktst: rld: Fatal Error: Cannot Successfully map soname
  'libh5test.so.1' under any of the filenames .......(bunch of directories)
  "
  And the testing will fail. 

  We believe this is a libtool problem. One way to get rid of this is to
  add the paths of libh5test.so.1 and libh5.so.1 to the shared library path.

  For 32-bit:
  You may do this, under csh:
  setenv LD_LIBRARYN32_PATH .......(existing paths):[full path of HDF5
  directory/test/.libs]:[full path of HDF5 directory/src/.libs]

  For 64-bit:
  setenv LD_LIBRARY64_PATH ......(existing paths):[full path of HDF5
  directory/test/.libs]:[full path of HDF5 directory/src/.libs]

  NOTE: This problem ONLY affects the testing of the HDF5 library when you 
  build from source. It won't affect any applications that would like to link 
  with the HDF5 shared library since the shared library path needs to be set 
  anyway.  KY - 2007/8/2

* QSC (an HP alpha-based OSF1 cluster) failed the testpar/testphdf5 sub-test
  "calloc".  All other tests passed.  This indicates that a dataset using 
  chunked storage created by serial HDF5 may not work properly with parallel 
  HDF5.  The calloc test can be skipped by running "prun ... testphdf5 -x 
  calloc".  AKC - 2007/7/12.

* The Intel C Compiler for the Linux x86_64 platform (EM64T-based, v8.1) has
  an optimization error in the datatypes conversion code.  Before running
  configure, edit the file config/intel-flags by changing the setting of
  PROD_CFLAGS from -O3 to -O0.  Then run configure.  AKC - 2005/11/10.

* When testing parallel HDF5 with the C compiler version MIPSpro 7.4.3 on IRIX
  6.5, set the environment variable MPI_TYPE_MAX to be a bigger number, for 
  example 120000, in order to pass the complicated collective IO tests inside 
  the parallel HDF5 library. This is not a problem inside the parallel HDF5 
  library. You can always set a bigger number on your system.  KY - 2005/10/6

* A contiguous or chunked dataset created by a sequential version of HDF5 
  might not be able to be modified with a parallel version of the library. 
  Use the H5Pset_alloc_time function with H5D_ALLOC_TIME_EARLY to set up the 
  dataset creation property list to avoid the problem.  EIP - 2005/09/09

* A dataset created or rewritten with the v1.6.3 library or after can't 
  be read with the v1.6.2 library or before when Fletcher32 EDC (a filter) is 
  enabled.  There was a bug in the calculating code of the Fletcher32 
  checksum in the library before v1.6.3.  The checksum value wasn't consistent 
  between big-endian and little-endian systems.  This bug was fixed in 
  Release 1.6.3.  However, after fixing the bug, the checksum value is no 
  longer the same as before on little-endian system.  HDF5 library releases 
  after 1.6.4 can still read datasets created or rewritten with an HDF5 
  library of v1.6.2 or before.  SLU - 2005/7/8

* For version 6 (6.02 and 6.04) of the Portland Group compiler on AMD Opteron
  processor, there's a bug in the compiler for optimization(-O2).  The library
  failed in several tests, all related to the multi driver.  The problem has 
  been reported to the vendor.  

* test/big fails sometimes with the message "Possible overlap with another
  region."  The test selects regions randomly, and this error occurs when
  two regions overlap each other; it is a bug in the test and not in
  HDF5.  Since the error is triggered by a random situation, it will
  usually disappear if the test is re-run.

* Newer SGI MIPSpro compilers (version 7.4.x) support C99 features but 
  have a "guard" statement in stdint.h that will #error and skip the rest
  of the header file if the C99 option is not used explicitly.  Hardsetting
  $CC to c99 will resolve the problem. AKC - 2004/12/13

* On IBM AIX systems, parallel HDF5 mode will fail some tests with error
  messages like "INFO: 0031-XXX ...".  This is from the command poe.
  Set the environment variable MP_INFOLEVEL to 0 to minimize the messages
  and run the tests again.

  The tests may also fail with messages like "The socket name is already
  in use".  HDF5 does not use sockets.  This is due to problems of the 
  poe command trying to set up the debug socket.  Check whether there are 
  many old /tmp/s.pedb.* files staying around.  These are sockets used by 
  the poe command and left behind due to failed commands.  Ask your system 
  administrator to clean them out.  Lastly, request IBM to provide a means 
  to run poe without the debug socket.

* The h5dump tests may fail to match the expected output on some platforms
  (e.g. parallel jobs, Windows) where the error messages directed to
  "stderr" do not appear in the "right order" with output from stdout.
  This is not an error.

* The --enable-static-exec configure flag fails to compile for Solaris
  platforms. This is due to the fact that not all of the system
  libraries on Solaris are available in a static format.

  The --enable-static-exec configure flag also fails to correctly compile
  on the IBM SP2 platform for the serial mode. The parallel mode works fine
  with this option.

  The --enable-static-exec configure flag also fails to correctly compile
  on the HPUX 11.00.
  
  It is suggested that you don't use this option on these platforms
  during configuration.

* Use the --disable-shared configure flag if building with an Absoft Fortran
  compiler.

* Information about building with PGI and Intel compilers is available in
  INSTALL file sections 5.7 and 5.8.

* In LANL QSC, the new cc compiler has problems converting small values of
  long long (absolute values less than 1**-308) to double.  This triggers
  the test/dtypes to report failure in the following test:
      Testing random sw long double -> double conversions
  If -ieee is used, the converted doubles spread over the range 0.0 to 
  10**-308.  If -ieee is not used, the converted double values are mostly 
  0.0, but occasionally appear as 10**-308.  This has been reported to the 
  system staff.

  All other tests have passed.

* On at least one system, SDSC DataStar, the scheduler (in this case
  LoadLeveler) sends job status updates to standard error when you run
  any executable that was compiled with the parallel compilers.

  This causes problems when running "make check" on parallel builds, as
  many of the tool tests function by saving the output from test runs,
  and comparing it to an exemplar.

  The best solution is to reconfigure the target system so it no longer
  inserts the extra text.  However, this may not be practical.

  In such cases, one solution is to "setenv HDF5_Make_Ignore yes" prior to
  the configure and build.  This will cause "make check" to continue after
  detecting errors in the tool tests.  However, in the case of SDSC DataStar,
  it also leaves you with some 150 "failed" tests to examine by hand.

  A second solution is to write a script to run serial tests and filter
  out the text added by the scheduler.  A sample script used on SDSC
  DataStar is given below, but you will probably have to customize it
  for your installation.

  Observe that the basic idea is to insert the script as the first item
  on the command line which executes the test.  The script then
  executes the test and filters out the offending text before passing
  it on.

        #!/bin/csh

        set STDOUT_FILE=~/bin/serial_filter.stdout
        set STDERR_FILE=~/bin/serial_filter.stderr

        rm -f $STDOUT_FILE $STDERR_FILE

        ($* > $STDOUT_FILE) >& $STDERR_FILE

        set RETURN_VALUE=$status

        cat $STDOUT_FILE

        tail +3 $STDERR_FILE

        exit $RETURN_VALUE

  You get the HDF5 make files and test scripts to execute your filter script
  by setting the environment variable "RUNSERIAL" to the full path of the
  script prior to running configure for parallel builds.  Remember to
  "unsetenv RUNSERIAL" before running configure for a serial build.

  Note that the RUNSERIAL environment variable exists so that we can
  prefix serial runs as necessary on the target system.  On DataStar,
  no prefix is necessary.  However, on an MPICH system, the prefix might
  have to be set to something like "/usr/local/mpi/bin/mpirun -np 1" to
  get the serial tests to run at all.

  In such cases, you will have to include the regular prefix in your
  filter script.  JM - 2004/9/15

%%%%1.6.6%%%%   Release Information for hdf5-1.6.6 (16/August/08)

HDF5 version 1.6.6 released on Thu Aug 16 11:17:10 CDT 2007
================================================================================

INTRODUCTION
============
This document describes the differences between HDF5-1.6.5 and
HDF5-1.6.6  It contains information on the platforms tested and
known problems in HDF5-1.6.6. For more details, check the HISTORY.txt
file in the HDF5 source.

HDF5 documentation can be found in the distributed release source 
code in the subdirectory doc/html/ or on the THG (The HDF Group) 
ftp server (ftp.hdfgroup.org) in the directory:

     /HDF5/docs/

Documentation for the current release is also on the HDF web site:

     http://hdfgroup.org/HDF5/doc/

For more information, see the HDF5 home page at:

    http://hdfgroup.org/HDF5/

If you have any questions or comments, please send them to:

    help@hdfgroup.org


CONTENTS
========
- New Features
- Support for New Platforms, Languages and Compilers
- Bug Fixes since HDF5-1.6.5
- Documentation
- Platforms Tested
- Supported Configuration Features Summary
- Known Problems


New Features
============
    Configuration:
    -------------------------
        - HDF5 now uses autoconf 2.61 to generate configure. MAM - 2007/7/25.

    Source code distribution
    ========================
    Library:
    --------
        - None

    Parallel Library:
    -----------------
        - None
      
    Tools:
    ------
        - h52gif and gif2h5: Both these tools were revised to include High
            Level Image API support.  Tests were added to /hl/tools/gif2h5.
            PVN - 2007/04/13
        - h5dump: Added support for double long type H5T_NATIVE_LDOUBLE. 
            PVN - 2007/03/13
        - h5dump: Added support for binary output; see usage. PVN 2007/03/13
        - h5repack: Added support for reading and writing by hyperslabs for
            large files. PVN - 2007/03/01
        - h5repack: A new option allows the copy to use the source file type
            (default) instead of the previous conversion to native type. 
            PVN - 2007/03/01
        - h5repack: Added output of the percentage of compression achieved. 
            PVN - 2007/03/01
        - h5diff: Added support for comparing dataset regions. PVN -
          2007/02/20
        - h5diff: Added support for reading and comparing by hyperslabs for 
            large files.  PVN - 2007/02/20
        - h5diff: Added printing of dataset dimensions along with dataset
          name. 
            PVN - 2007/02/19

    F90 API:
    --------
        - None

    C++ API:
    --------
        - Added support for Szip: DSetCreatPropList::setSzip - BMR 2007/01/24


Support for New Platforms, Languages and Compilers
==================================================
        - Added support for MAC Intel (Darwin 8.8.2)  (gcc 4.0.1 and g95 0.91)
                                EIP - 2007/02/13
        - Added support for GNU C compiler version 4.2.1 for FreeBSD 6.2 
          (32- and 64-bit)


Bug Fixes since HDF5-1.6.5 Release
==================================

    Library
    -------
        - Fixed several bugs with writing fill values for datasets that have
            a variable-length datatype or component datatype.  QAK -
2007/06/19
        - STDIO driver didn't support files bigger than 2GB because the OFFSET
            parameter of fseek is of type LONG INT, not big enough for big 
            files.  Use fseeko instead for big files if it's available on the 
            system.  SLU - 2007/4/5
        - Relaxed restrictions on attribute operations to allow a file ID to
            be used as the "location ID".  If a file ID is used, the attribute
            operation will occur on the root group of the file.
            QAK - 2007/02/09
        - Fixed a bug in H5Sselect_valid() that caused an incorrect value to
            be returned (0) instead of FAIL on error conditions such as the
            selection or extent not being defined. CMC - 2007/01/05
        - Fixed potential file corruption bug which could overwrite a portion
            of an object's header when an attribute was renamed.  If the new
            name for the attribute was longer than the old name, it was
possible
            that the attribute would grow enough to overwrite another message
            in the object's header.  QAK - 2007/01/02
        - Fixed file corruption bug which could write an incorrect number of
            messages to an object's header under certain circumstances.
            Generally, the sequence of actions to generate this bug looks
            like this:
                - Create an object.
                - Close the file.
                - Re-open the file.
                - Add 2 (or more) attributes to the object.
                - Close the file.
                - Re-open the file.
                - Delete one of the attributes on the object.
                - Add a smaller attribute to the object.
                - Delete the smaller atttribute on the object.
                - Add a larger attribute on the object.

            After this, the number of header messages stored for the object
            will be off by one.  Other sequences of modifying attributes on an
            object could also trigger this bug.  If you are opening an
            object and the bottom few messages of the HDF5 error stack
            resembles the following, the object has been affected by this bug:

              #007: ../../hdf5_v1.6/src/H5C.c line 3887 in H5C_load_entry():
unable to load entry
                major(08): Meta data cache layer
                minor(40): Unable to load metadata into cache
              #008: ../../hdf5_v1.6/src/H5Ocache.c line 332 in H5O_load():
corrupt object header - too few messages
                major(12): Object header layer
                minor(40): Unable to load metadata into cache

            Specifically, "corrupt object header" is the best string to search
            for in the HDF5 error stack output.

            If your files have been affected by this bug, or you are concerned
            that your files might have been, please contact the HDF Helpdesk
            at help@hdfgroup.org for a tool to detect and repair files
            affected by this problem.  QAK - 2006/6/16

        - Fixed various problems with retrieving names of objects, especially
            with mounted files.  QAK - 2005/12/25

    Configuration
    -------------
        - Changed to default to --disable-shared if parallel is enabled. 
            AKC - 2007/5/12
        - Corrected a coding error in configure when it tries to locate the
          needed MPI and MPI-IO library for the fortran interface. 
            AKC - 007/5/9.
        - Changed default fortran compiler to g95 when gcc is used. 
            AKC - 007/2/17.
        - Configure can now use any tr command.  No more need for
            defining the variable TR, nor is it supported.  AKC - 2006/05/20

    Performance
    -------------
        - None
   
    Tools
    -----
        - Fixed a bug in h5dump regarding the display of named datatypes
            attributes. PVN - 2007/03/13
        - Fixed a bug in h5dump regarding the display of group comments. 
            PVN - 2007/03/13
        - Fixed a bug in h5dump regarding the display of hardlinks pointing 
            to the root group.  PVN - 2007/03/13
        - Fixed a bug in the h5diff percentage option -p.  PVN - 2007/03/05
        - Fixed a bug in h5dump that caused array indices greater than 2^32-1
            not to be printed correctly.  PVN - 2007/2/19

    Documentation 
    ------------- 
        - Corrected errors and extended the descriptions in Reference Manual 
            entries for several functions.  

    F90 API
    -------
        - None
                                
    C++ API
    -------
          - Changed
                  StrType::StrType(const size_t& size);
            to
                  StrType::StrType(const int dummy, const size_t& size);
            because the first one clashed with
                  StrType::StrType(const hid_t existing_id); - BMR 2007/05/03
          - Wrappers of H5Rcreate had incorrect prototypes.  Added these
            overloaded functions:
                  IdComponent::reference(void* ref, const char* name,
DataSpace&
                          dataspace, H5R_type_t ref_type = H5R_DATASET_REGION)
                  IdComponent::void reference(void* ref, const char* name)
                  IdComponent::reference(void* ref, const H5std_string& name)
            and will remove these incorrect member functions:
                  DataSet::Reference
                  DataType::Reference
                  Group::Reference
                  H5File::Reference
          - Added wrappers for H5Rdereference as constructors:
                  DataSet(IdComponent& obj, void* ref);
                  Group(IdComponent& obj, void* ref);
                  DataType(IdComponent& obj, void* ref);


Documentation
=============

    HDF5 documentation can be found in the distributed release source 
    code in the subdirectory doc/html/ (start with index.html) or on the 
    THG (The HDF Group) ftp server (ftp.hdfgroup.org) in the directory:

         /HDF5/docs/

    Online documentation for the current release can be found on the THG 
    web site:

         http://hdfgroup.org/HDF5/doc/


Platforms Tested
================

    AIX 5.2 (32/64 bit)           xlc 6.0.0.8
    (datastar)                    xlC 6.0.0.9
                                  xlf 8.1.1.7
                                  mpcc_r 6.0.0.8
                                  mpxlf_r 8.1.1.7

    AIX 5.3 (32/64 bit)           xlc 7.0.0.0
    (copper)                      xlC 7.0.
                                  xlf 9.1.0.3

    FreeBSD 6.2 (32- and 64-bit)  gcc  and g++3.4.6
    (duty and liberty)            gcc and g++ 4.2.1

    HP-UX B.11.23                 HP aC++/ANSI C B3910B A.06.02
    (sirius)                      HP F90 v3.1 (32-bit only)
                                  HP aC++/ANSI C B3910B A.06.02

    IRIX64 6.5                    MIPSpro cc 7.4.4m
    (ucar mop1 64 & n32)          F90 MIPSpro 7.4.4m (64 only)
                                  C++ MIPSpro cc 7.4.4m

    Linux 2.4.21-47.ELsmp #1 SMP  gcc 3.2.3
        i686 i386 GNU/Linux
    (osage)

    Linux 2.6.9-42.0.10.ELsmp #1  gcc (GCC) 3.4.6
        SMP i686 i386             G95 (GCC 4.0.3 (g95 0.91!) Nov 21 2006)
    (kagiso)                      PGI C, Fortran, C++ 6.2-5 32-bit 
                                  icc (ICC) 9.1 
                                  Intel(R) C++ Compiler for 32-bit 
                                      applications, Version 9.1
                                  Intel(R) Fortran Compiler for 32-bit 
                                      applications, Version 9.1 
                                  Absoft 32-bit Fortran 95 10.0.4
                                  MPICH mpich2-1.0.4p1 compiled with  
                                  gcc 3.4.6 and G95 (GCC 4.0.3 (g95 0.91!) 

    Linux 2.6.16.46-0.12-debug #1 
        SMP ia64 GNU/Linux        Intel(R) C++ Version 10.0.025
    (ucar hir1)                   Intel(R) Fortran Itanium(R) Version 10.0.025

    Linux 2.6.16.46-0.14-smp #1   Intel(R) C++ for Intel(R) EM64T Ver. 9.1.037
        SMP x86_64 GNU/Linux      Intel(R) Fortran Intel(R) EM64T Ver. 9.1.031
    (smirom)                      PGI C, Fortran, C++ Version 6.2-5
                                         for 64-bit target on x86-64
                                  tested for both 32- and 64-bit binaries

    Linux 2.6.5-7.283-rtgfx Altix 
        SMP ia64                  Intel(R) C++ Version 9.0
    (cobalt)                      Intel(R) Fortran Itanium(R) Version 9.0
                                  SGI MPI

    OSF1 V5.1 (QSC)               Compaq C V6.5-011 
    (See "Known Problems.")       HP Fortran V5.5A-3548
                                  Compaq C++ V6.5-036  
                                  MPIX200_64_r13.4

    SunOS 5.8 32- and 64-bit      Sun WorkShop 6 update 2 C 5.3
    (sol)                         Sun WorkShop 6 update 2 Fortran 95 6.2
                                  Sun WorkShop 6 update 2 C++ 5.3

    SunOS 5.10 32- and 64-bit     Sun WorkShop 6 update 2 C 5.8
    (linew)                       Sun WorkShop 6 update 2 Fortran 95 8.2
                                  Sun WorkShop 6 update 2 C++ 5.8
                                  Patch 121019-06 

    Xeon Linux 2.4.21-32.0.1.ELsmp-perfctr-lustre
    (tungsten)                    Intel(R) C++ Version 9.0
                                  Intel(R) Fortran Compiler Version 9.0
                                  PGI C Version 6.0
                                  PGI C++ Version 6.0
                                  PGI Fortran Version 6.0
                                  gcc (GCC) 3.2.2 (Red Hat Linux 3.2.2-5)

    Xeon Linux 2.6.9-42.0.10.EL_lustre-1.4.10.1smp
    (abe)                         Intel(R) C++ Version 10.0
                                  Intel(R) Fortran Compiler Version 10.0
                                  Open MPI 1.2.2

    IA-64 Linux 2.4.21.SuSE_292.til1
        ia64                      gcc (GCC) 3.2.2
    (NCSA tg-login)               Intel(R) C++ Version 8.0
                                  Intel(R) Fortran Compiler Version 8.0
                                  mpich-gm-1.2.5..10-intel-r2

    Windows XP                    Visual Studio 6.0
                                  Visual Studio .NET (with Intel Fortran 9.0)
                                  Visual Studio 2005 (with Intel Fortran 9.0)
                                  cygwin (gcc 3.4.4)

    MAC OS X Intel                Darwin 8.10.1
                                  i686-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1
                                  g95 0.91


Supported Configuration Features Summary
========================================

Key:   y   = Tested and supported
       n   = Not supported or not tested in this release
       C   = Cluster
       W   = Workstation
       ( ) = Footnote appears below second table

Platform                              C        F90  F90      C++  zlib  SZIP
                                      parallel      parallel
Solaris2.8 32- and 64-bit             n        y    n        y    y     y
Solaris2.10 32- and 64-bit            n        y    n        y    y     y
IRIX64_6.5 32-bit                     n        n    n        n    y     y
IRIX64_6.5 64-bit                     n        y    n        n    y     y
HPUX11.23-32bit                       n        y    n        y    y     y
HPUX11.23-64bit                       n        n    n        y    y     y
WinXP Visual Studio 6.0               n        n    n        y    y     y
WinXP CYGWIN                          n        n    n        y    y     y
WinXP 2005                            n        y    n        y    y     y
WinXP .Net                            n        y    n        y    y     y
Mac OS X 10.4.10                      n        y    n        y    y     y
AIX-5.2 & 5.3 32- and 64-bit          y        y    y        y    y     y
FreeBSD 6.2 32- and 64-bit            n        n    n        y    y     y
RedHat Linux 2.4.21              W    n        n    n        y    y     y
SuSE Linux 2.6.9-42 i686 GNU (1) W    y        y    y        y    y     y
SuSE Linux 2.6.9-42 i686 Intel   W    n        y    n        y    y     y
SuSE Linux 2.6.9-42 i686 PGI     W    n        y    n        y    y     y
SuSE Linux 2.6.16 x86_64 GNU (1) W    y        y    y        y    y     y
SuSE Linux 2.6.16 x86_64 Intel   W    n        y    n        y    y     y
SuSE Linux 2.6.16 x86_64 PGI     W    n        y    n        y    y     y
RHEL 4 Linux 2.6.9 Xeon Lustre   C    y        y    y        y    y     y
RedHat Linux 2.4 Xeon Lustre     C    n        y    n        y    y     y
SuSE Linux 2.4 ia64              C    y        y    y        y    y     y
SuSe Linux 2.6.16 SGI Altix ia64      n        y    n        y    y     y
SuSe Linux 2.6.5 SGI Altix ia64       n        y    n        y    y     y
OSF1 v5.1                             y        y    y        y    y     n


Platform                              Shared        static-  Thread-  STREAM-
                                      libraries(4)  exec     safe     VFD
Solaris2.8 32- and 64-bit             y             n        y        y
Solaris2.10 32- and 64-bit            y             n        y        y
IRIX64_6.5 32-bit                     y             n        y        y
IRIX64_6.5 64-bit                     y             n        y        y
HPUX11.23-32bit                       y (3)         n        n        y
HPUX11.23-64bit                       y (3)         n        n        y
WinXP Visual Studio 6.0               y             n        n        n
WinXP CYGWIN                          y             n        n        n
WinXP 2005                            y             n        n        n
WinXP .Net                            y             n        n        n
Mac OS X 10.4.10                      y             n        n        y
AIX-5.2 & 5.3 32- and 64-bit          n             n        n        y
FreeBSD 6.2 32- and 64-bit            y             n        n        y
RedHat Linux 2.4.21              W    y             n        n        y
SuSE Linux 2.6.9-42 i686 GNU (1) W    y             n        y        y
SuSE Linux 2.6.9-42 i686 Intel   W    y             n        n        y
SuSE Linux 2.6.9-42 i686 PGI     W    n             n        n        y
SuSE Linux 2.6.16 x86_64 GNU (1) W    y             n        n        y
SuSE Linux 2.6.16 x86_64 Intel   W    y             n        n        y
SuSE Linux 2.6.16 x86_64 PGI     W    n             n        n        y
RHEL 4 Linux 2.6.9 Xeon Lustre   C    y             n        n        y
RedHat Linux 2.4 Xeon Lustre     C    y             n        n        y
SuSE Linux 2.4 ia64              C    y             n        n        y
SuSe Linux 2.6.16 SGI Altix ia64      n             n        n        y
SuSe Linux 2.6.5 SGI Altix ia64       n             n        n        y
OSF1 v5.1                             n             n        n        y

Compiler versions for each platform are listed in the "Platforms Tested" 
table found elsewhere in this file (RELEASE.txt).  Unless otherwise noted, 
compilers used are the system compilers.

Footnotes:
(1) Fortran compiled with g95.
(2) In most cases, shared libraries are provided only for the C library, 
    except on Windows where they are provided for C, C++, and Fortran.
(3) C++ works only with static libraries.


Known Problems
==============
* QSC (an HP alpha-based OSF1 cluster) does not create h5pfc correctly. It
  does not include the -lmpi properly.  This will be fixed in the next
  release.  AKC - 2007/08/07.

* On IRIX64 6.5 (UCAR SGI mop1), when testing HDF5 tools with an HDF5 shared
  library, especially for h5repacktst and h52gifgentst, the following (or
  similar) error message may appear:
  "523648:lt-h5repacktst: rld: Fatal Error: Cannot Successfully map soname
  'libh5test.so.1' under any of the filenames .......(bunch of directories)
  "
  And the testing will fail. 
  We believe this is a libtool problem. One way to get rid of this is to
  add the paths of libh5test.so.1 and libh5.so.1 to the shared library path.

  For 32-bit:
  You may do this, under csh:
  setenv LD_LIBRARYN32_PATH .......(existing pathes):[full path of HDF5
  directory/test/.libs]:[full path of HDF5 directory/src/.libs]

  For 64-bit:
  setenv LD_LIBRARY64_PATH ......(existing pathes):[full path of HDF5
  directory/test/.libs]:[full path of HDF5 directory/src/.libs]

  NOTE: This problem ONLY affects the testing of the HDF5 library when you 
  build from source. It won't affect any applications that would like to link 
  with the HDF5 shared library since the shared library path needs to be set 
  anyway.  KY - 2007/8/2

* QSC (an HP alpha-based OSF1 cluster) failed the testpar/testphdf5 sub-test
  "calloc".  All other tests passed.  This indicates that a dataset using 
  chunked storage created by serial HDF5 may not work properly with parallel 
  HDF5.  The calloc test can be skipped by running "prun ... testphdf5 -x 
  calloc".  AKC - 2007/7/12.

* The Intel C Compiler for the Linux x86_64 platform (EM64T-based, v8.1) has
  an optimization error in the datax types conversion code.  Before running
  configure, edit the file config/intel-flags by changing the setting of
  PROD_CFLAGS from -O3 to -O0.  Then run configure.  AKC - 2005/11/10.

* When testing parallel HDF5 with the C compiler version MIPSpro 7.4.3 on IRIX
  6.5, set the environment variable MPI_TYPE_MAX to be a bigger number, for 
  example 120000, in order to pass the complicated collective IO tests inside 
  the parallel HDF5 library. This is not a problem inside the parallel HDF5 
  library. You can always set a bigger number on your system.  KY - 2005/10/6

* A contiguous or chunked dataset created by a sequential version of HDF5 
  might not be able to be modified with a parallel version of the library. 
  Use the H5Pset_alloc_time function with H5D_ALLOC_TIME_EARLY to set up the 
  dataset creation property list to avoid the problem.  EIP - 2005/09/09

* The dataset created or rewritten with the v1.6.3 library or after can't 
  be read with the v1.6.2 library or before when Fletcher32 EDC (a filter) is 
  enabled.  There was a bug in the calculating code of the Fletcher32 
  checksum in the library before v1.6.3.  The checksum value wasn't consistent 
  between big-endian and little-endian systems.  This bug was fixed in 
  Release 1.6.3.  However, after fixing the bug, the checksum value is no 
  longer the same as before on little-endian system.  The library release 
  after 1.6.4 can still read the dataset created or rewritten with the library
  of v1.6.2 or before.  SLU - 2005/7/8

* For version 6 (6.02 and 6.04) of the Portland Group compiler on AMD Opteron
  processor, there's a bug in the compiler for optimization(-O2).  The library
  failed in several tests, all related to the multi driver.  The problem has 
  been reported to the vendor.  

* test/big fails sometimes with the message "Possible overlap with another
  region."  The test selects regions randomly, and this error occurs when
  two regions overlap each other; it is a bug in the test and not in
  HDF5.  Since the error is triggered by a random situation, it will
  usually disappear if the test is re-run.

* Newer SGI MIPSpro compilers (version 7.4.x) support C99 features but 
  have a "guard" statement in stdint.h that will #error and skip the rest
  of the header file if the C99 option is not used explicitly.  Hardsetting
  $CC to c99 will resolve the problem. AKC - 2004/12/13

* On IBM AIX systems, parallel HDF5 mode will fail some tests with error
  messages like "INFO: 0031-XXX ...".  This is from the command poe.
  Set the environment variable MP_INFOLEVEL to 0 to minimize the messages
  and run the tests again.

  The tests may also fail with messages like "The socket name is already
  in use".  HDF5 does not use sockets (except for stream-VFD).  This is
  due to problems of the poe command trying to set up the debug socket.
  Check whether there are many old /tmp/s.pedb.* files staying around.  These 
  are sockets used by the poe command and left behind due to failed commands.
  Ask your system administrator to clean them out.  Lastly, request IBM
  to provide a means to run poe without the debug socket.

* The h5dump tests may fail to match the expected output on some platforms
  (e.g. parallel jobs, Windows) where the error messages directed to
  "stderr" do not appear in the "right order" with output from stdout.
  This is not an error.

* The stream-vfd test uses ip port 10007 for testing. If another
  application is already using that port address, the test will hang
  indefinitely and has to be terminated by the kill command. To try the
  test again, change the port address in test/stream_test.c to one not
  being used in the host.

* The --enable-static-exec configure flag fails to compile for Solaris
  platforms. This is due to the fact that not all of the system
  libraries on Solaris are available in a static format.

  The --enable-static-exec configure flag also fails to correctly compile
  on the IBM SP2 platform for the serial mode. The parallel mode works fine
  with this option.

  The --enable-static-exec configure flag also fails to correctly compile
  on the HPUX 11.00.
  
  It is suggested that you don't use this option on these platforms
  during configuration.

* The Stream VFD is not supported under Windows.

* Use the --disable-shared configure flag if building with Absoft Fortran
  compiler.

* Information about building with PGI and Intel compilers is available in
  INSTALL file sections 5.7 and 5.8.

* In LANL QSC, the new cc compiler has problems converting small values of
  long long (absolute values less than 1**-308) to double.  This triggers
  the test/dtypes to report failure in the following test:
      Testing random sw long double -> double conversions
  If -ieee is used, the converted doubles spread over the range 0.0 to 
  10**-308.  If -ieee is not used, the converted double values are mostly 
  0.0, but occasionally appear as 10**-308.  This has been reported to the 
  system staff.

  All other tests have passed.

* On at least one system, SDSC DataStar, the scheduler (in this case
  LoadLeveler) sends job status updates to standard error when you run
  any executable that was compiled with the parallel compilers.

  This causes problems when running "make check" on parallel builds, as
  many of the tool tests function by saving the output from test runs,
  and comparing it to an exemplar.

  The best solution is to reconfigure the target system so it no longer
  inserts the extra text.  However, this may not be practical.

  In such cases, one solution is to "setenv HDF5_Make_Ignore yes" prior to
  the configure and build.  This will cause "make check" to continue after
  detecting errors in the tool tests.  However, in the case of SDSC DataStar,
  it also leaves you with some 150 "failed" tests to examine by hand.

  A second solution is to write a script to run serial tests and filter
  out the text added by the scheduler.  A sample script used on SDSC
  DataStar is given below, but you will probably have to customize it
  for your installation.

  Observe that the basic idea is to insert the script as the first item
  on the command line which executes the test.  The script then
  executes the test and filters out the offending text before passing
  it on.

        #!/bin/csh

        set STDOUT_FILE=~/bin/serial_filter.stdout
        set STDERR_FILE=~/bin/serial_filter.stderr

        rm -f $STDOUT_FILE $STDERR_FILE

        ($* > $STDOUT_FILE) >& $STDERR_FILE

        set RETURN_VALUE=$status

        cat $STDOUT_FILE

        tail +3 $STDERR_FILE

        exit $RETURN_VALUE

  You get the HDF5 make files and test scripts to execute your filter script
  by setting the environment variable "RUNSERIAL" to the full path of the
  script prior to running configure for parallel builds.  Remember to
  "unsetenv RUNSERIAL" before running configure for a serial build.

  Note that the RUNSERIAL environment variable exists so that we can
  prefix serial runs as necessary on the target system.  On DataStar,
  no prefix is necessary.  However, on an MPICH system, the prefix might
  have to be set to something like "/usr/local/mpi/bin/mpirun -np 1" to
  get the serial tests to run at all.

  In such cases, you will have to include the regular prefix in your
  filter script.  JM - 2004/9/15


%%%%1.6.5%%%%   Release Information for hdf5-1.6.5 (10/November/05)


HDF5 version 1.6.5 released on Thu Nov 10 18:17:53 CST 2005
================================================================================

INTRODUCTION
============
This document describes the differences between HDF5-1.6.4 and
HDF5-1.6.5.  It contains information on the platforms tested and
known problems in HDF5-1.6.5. For more details, check the HISTORY.txt
file in the HDF5 source.

The HDF5 documentation can be found on the NCSA ftp server
(ftp.ncsa.uiuc.edu) in the directory:

     /HDF/HDF5/docs/

Documentation for the current release is also on the HDF web site:

     http://hdf.ncsa.uiuc.edu/HDF5/doc/

For more information look at the HDF5 home page at:

    http://hdf.ncsa.uiuc.edu/HDF5/

If you have any questions or comments, please send them to:

    hdfhelp@ncsa.uiuc.edu


CONTENTS
========
- New Features
- Support for New Platforms, Languages and Compilers
- Bug Fixes since HDF5-1.6.4
- Documentation
- Platforms Tested
- Supported Configuration Features Summary
- Known Problems


New Features
============
    Configuration:
    -------------------------
	- Added yodconfigure, a configure tool, that patches up the configure
	  file to allow configure to launch executable via the proper
	  launching command like "yod -sz 1".  AKC - 2005/11/10
	- Configure now recognizes the TR variable as the location of the
          tr utility.  JML 2005/10/20

    Source code distribution:
    -------------------------
	- Added g95 as a testing "platform" informally. AKC - 2005/10/04.
        - Added MD5 checksumming to snapshot releases.  Releases will now
          produce an .md5 file as well as a .tar archive.  md5sum can be
          used to verify the arvhice with the .md5 checksum.  -JL 2005/09/06

    Library:
    --------
        - Added HSYS_ERROR which retrieves the system error message and pushes
          it to the error stack.  This provides more information regarding the 
	  failed system call. AKC - 2005/08/04
        - Added H5F_OBJ_LOCAL flag to H5Fget_obj_count() & H5Fget_obj_ids(), to
          allow querying for objects in a file that was opened with a particular
          file ID, instead of all objects opened in the file with any file ID.
          QAK - 2005/06/01

    Parallel Library:
    -----------------
	- Added mpich2 as a testing "platform" informally. AKC - 2005/10/04.
	- HDF5 supports collective MPI-IO for irregular selection with HDF5
	  dataset. Irregular selection is when users use API H5Sselect_hyperslab
	  more than once for the same dataset.
	  Currently, not all MPI-IO packages support the complicated 
	  MPI derived datatypes used in the implementation of irregular 
	  selections INSIDE HDF5. 
	  1) DEC 5.x wdoes not support complicated derived datatypes.
	  2) For AIX 5.1:
	     If your poe version number is 3.2.0.20 or lower,
	     please edit powerpc-ibm-aix5.x in the directory hdf5/config/.
	     Find the line with
	          << hdf5_mpi_complex_derived_datatype_works >>
	     and UNCOMMENT this line before the configure.
	     check poe version with the following command:
	     lpp -l all | grep ppe.poe
	  3) For Linux cluster,:
	     If mpich version is 1.2.5 or lower, collective irregular selection
	     IO is not supported; internally independent IO is used.
	  4) For IRIX 6.5:
	     if C compiler version is 7.3 or lower, collective irregular 
	     selection IO is not supported; internally independent IO is used.
	  5) For platforms which internally used mpich: 
	     If the mpich version is 1.2.5 or lower, please find the 
	     corresponding config (in hdf5/config) file and add
	         hdf5_mpi_complex_derived_datatype_works='no' 
	     at the end of the configuration file. For example, on the 
	     NCSA SGI Altix, the internal mpich library is 1.2.5. So 
	         hdf5_mpi_complex_derived_datatype_works='no' 
	     should be added at the end of the config file ia64-linux-gnu.
	     KY - 2005/09/12

    Tools:
    ------
        - Removed obsolete pdb2hdf tool.  JML - 2005/10/28
        - Sped up h5dump on files with large numbers of objects.
            QAK - 2005/08/25

    F90 API:
    --------
        - Added missing h5tget_member_class_f function
                                            EIP 2005/04/06
    C++ API:
    --------
        - Added missing member functions:
		H5::CompType::getMemberArrayType
		H5::CompType::getMemberVarLenType
		H5::AbstractDs::getArrayType
		H5::AbstractDs::getVarLenType
		H5::CommonFG::openArrayType
		H5::CommonFG::openVarLenType
		H5::PropList::copyProp -- this will replace the current
			H5::PropList::copyProp in later releases due
			to incorrect prototype.
		BMR - 2005/07/27


Support for New Platforms, Languages and Compilers
==================================================
    - Added support for RedStorm platform (serial only.)  AKC 2005/11/10
    - Added support for BG/L platform (serial only.)  LA 2005/11/10
    - Added support for HPUX 11.23 (IA64); only C and C++ are supported
      with the +DD64 flag 
                                             EIP 2005/10/05
 

    Configuration
    -------------
        - Added support for Cray X1.  JML 2005/10/03


Bug Fixes since HDF5-1.6.4 Release
==================================

    Library
    -------
        - Fixed collective IO in chunking-storage.  HDF5 may have called the 
            wrong routine when the shape of the dataspace in the file and in 
            the bufferred chunk were different. This bug was fixed to make sure
            the correct routine is called. KY - 2005/10/19
        - Fixed core dump when closing root groups opened through two different
            file handles that operate on the same actual file.  QAK - 2005/10/02
        - The ./dsets tests used to fail in the TFLOPS machine if the
            test program, dsets.c, was compiled with the -O option.
            The HDF5 library still worked correctly with the -O option. Only
            the ./dsets failed.  It is fixed. AKC - 2005/09/14
        - Corrected errors when performing various operations on a group opened
            by dereferencing an object reference.  QAK - 2005/07/30
        - Fixed a bug with named datatypes where a copy of a named datatype
            used to create a dataset would accidentally use the original
            named datatype for the dataset's datatype.  QAK - 2005/07/23
        - Made H5Fget_name() to be consistent and always return name of actual
            file the ID is in.  (Instead of the name of the top file in a
            file mounting hierarchy).  QAK - 2005/07/19
        - Reworked internal file mounting semantics to hopefully eliminate
            mounting problems.  We now require that files that are mounting
            together all have the same "file close degree".  QAK - 2005/07/19
        - More bug fixes on holding open files that are mounted and have
            IDs open.  QAK - 2005/07/14
        - Dataset sieve buffer cache was inadvertantly disabled; it has been
            re-enabled.  QAK - 2005/07/08
        - Don't unmount child files until the parent file actually closes.
            (Previously, if an object was holding open a file, the child files
            would get unmounted too early).  QAK - 2005/07/05
        - Fixed bug where unmounted files could cause the library to go into
            an infinite loop when shutting down.  QAK - 2005/06/30
        - Fixed bug with hyperslab selections that use selection offsets and
            operate on chunked datasets going into infinite loop or dumping
            core.  QAK - 2005/06/17
        - Corrected memory leak and possible corruption when opening a group.
            QAK - 2005/06/17
        - Added check for opaque datatype tags being too long (check against
            H5T_OPAQUE_TAG_MAX, currently set to 256).  QAK - 2005/06/14
        - Fixed various errors in maintaining names for open objects in the
            face of unusual mount & unmount operations.  QAK - 2005/06/08
        - "SEMI" and "STRONG" file close degree settings now apply only to the
            particular file ID being closed, instead of operating on all open
            file IDs for a given file.  QAK - 2005/06/01
        - Fixed error in opening object in a group that was opened in a mounted
            file which has been unmounted.  QAK - 2005/03/17

    Configuration
    -------------
	- Configure can recognize -lmpich as a form of MPI library. -AKC-
	  2005/9/28.
	- Changed default C++ compiler for the IA64 platform from icc to
	    icpc which is the preferred compiler for Intel Compiler version
	    8. AKC - 2005/09/02

    Performance
    -------------
        - Optimized I/O for enumerated datatypes that are a superset of a 
            source enumerated datatype.  QAK - 2005/03/19
   
    Tools
    -----

    Documentation 
    ------------- 

    F90 API
    -------
       - h5pget_driver_f was returning information that could not be
         interpreted by a Fortran application program; fixed. EIP - 2005/04/10
                                
    C++ API
    -------
	- Several member functions' prototype changed due to the 
	  "int -> unsigned" change in the main library.  They are:
		H5::CompType::getMemberDataType(unsigned member_num)
		H5::CompType::getMemberCompType(unsigned member_num)
		H5::CompType::getMemberEnumType(unsigned member_num)
		H5::CompType::getMemberIntType(unsigned member_num)
		H5::CompType::getMemberFloatType(unsigned member_num)
		H5::CompType::getMemberStrType(unsigned member_num)
		BMR - 2005/07/27



   

Platforms Tested
================

    AIX 5.1  (32 and 64-bit)      xlc 6.0.0.6
                                  xlf 8.1.1.3
    				  xlC 6.0.0.6
				  mpcc_r 6.0.0.6
                                  mpxlf_r 8.1.1.3
				  xlc 5.0.2.5
				  xlf 7.1.1.2
				  xlC 5.0.2.5
				  mpcc_r 5.0.2.5
				  mpxlf_r 7.1.1.2
    AIX 5.2 (32/64 bit)           xlc 6.0.0.8
                                  xlC 6.0.0.9
                                  xlf 8.1.1.7
                                  mpcc_r 6.0.0.8
                                  mpxlf_r 8.1.1.7
    AIX 5.2 (32/64 bit, LLNL frost)    xlc 6.0.0.8
                                  xlC 6.0.0.8
                                  xlf 8.1.1.7
                                  mpcc_r 6.0.0.8
                                  mpxlf_r 8.1.1.7
    AIX 5.3 (32/64 bit)           xlc 7.0.0.0
                                  xlC 7.0.
                                  xlf 9.1.0.3
    Cray X1 water 3.0.35          Cray Standard C Version 5.4.0.7.4
                                  Cray Fortran 5.4.0.7.3
                                  Cray C++ 5.4.0.7.4
    FreeBSD 4.11                  gcc 2.95.4
                                  g++ 2.95.4
                                  gcc 3.2.3, 3.3.6, 3.4.4, 4.0.0
    HP-UX B.11.00                 HP C  HP92453-01 A.11.01.20 
                                  HP F90 v2.4
                                  HP ANSI C++ B3910B A.03.13
    HP-UX B.11.23                 HP aC++/ANSI C B3910B A.06.00
                                  HP F90 v2.9
                                  HP aC++/ANSI C B3910B A.06.00
    IRIX64 6.5 (tesla -64)        MIPSpro cc 7.4.2m
                                  F90 MIPSpro 7.4.2m
                                  C++ MIPSpro cc 7.4.2m
    IRIX64 6.5 (64 & n32)         MIPSpro cc 7.3.1.3m
                                  F90 MIPSpro 7.3.1.3m (64 only)
                                  C++ MIPSpro cc 7.3.1.3m
				  mpt 1.6
    Linux 2.4.20-28.7             gcc 2.96
    (eirene, verbena)             gcc 3.3.2
                                  PGI compilers (pgcc, pgf90, pgCC) 
                                  version 5.2-1
                                  Absoft Fortran compiler v9.0
                         	  Intel(R) C++ 32-bit Version 8.1
    				  Intel(R) Fortran 32-bit Version 8.1
                                  MPIch 1.2.6
    Linux 2.4.21-268-smp x86_64   gcc 3.3.1 (SuSE Linux, AMD)
    (mir)                         PGI 5.2-1 C and F90 (with k3-32) 
                         	  Intel(R) C++ 32-bit Version 8.1
    				  Intel(R) Fortran 32-bit Version 8.1
    Linux 2.4.21-sgi306rp21 Altix 
          SMP ia64                Intel(R) C++ Version 8.1
    (cobalt)                      Intel(R) Fortran Itanium(R) Version 8.1
                                  SGI MPI
    OSF1 V5.1 (QSC)               Compaq C V6.5-011 
                                  HP Fortran V5.5A-3548
				  Compaq C++ V6.5-036  
				  MPIX200_64_r13.4
    OSF1 V5.1 (PSC)               Compaq C V6.5-303 
                                  HP Fortran V5.5A-3548
				  Compaq C++ V6.5-040  
    SunOS 5.8 32,46               Sun WorkShop 6 update 2 C 5.3
     (Solaris 2.8)                Sun WorkShop 6 update 2 Fortran 90
                                  Sun WorkShop 6 update 2 C++ 5.3
    SunOS 5.9 32,64               Sun C 5.6 2004/07/15
     (Solaris 2.9)                Sun Fortran 95 8.0 2004/07/15
                                  Sun C++ 5.6 2004/07/15
    SunOS 5.10                    Sun WorkShop 6 update 2 C 5.3
                                  Sun WorkShop 6 update 2 Fortran 95 6.2
                                  Sun WorkShop 6 update 2 C++ 5.3
                                  Patch 111685-13 
    Xeon Linux 2.4.21-32.0.1.ELsmp-perfctr-lustre
    (tungsten)	                  Intel(R) C++ Version 9.0
                                  Intel(R) Fortran Compiler Version 9.0
    IA-64 Linux 2.4.21.SuSE_292.til1 ia64
    (NCSA tg-login)               Intel(R) C++ Version 8.0
                                  Intel(R) Fortran Compiler Version 8.0
				  mpich-gm-1.2.5..10-intel-r2
    Windows XP                    MSVC++.NET
                                  MSVC++ 6.0
                                  Intel 8.1 C++
    MAC OS X                      Darwin 7.5
                                  gcc and g++ Apple Computer, Inc. GCC 
                                  version 1175, based on gcc version 3.3.2
                                  IBM XL Fortran version 8.1 
                                  Absoft Fortran compiler v8.2


Supported Configuration Features Summary
========================================

Key:   y   = tested and supported
       n   = not supported or not tested in this release
       x   = not working in this release
       dna = does not apply
       ( ) = footnote appears below second table

Platform                             C        F90    F90      C++  zlib  SZIP
                                     parallel        parallel      
IBM BG/L (16)			     n        n      n        n    y     y
Solaris2.8 64-bit                    y        y      y(1)     y    y     y
Solaris2.8 32-bit                    y        y      y(1)     y    y     y
Solaris2.9 64-bit                    y(1)     y      y(1)     y    y     y
Solaris2.9 32-bit                    y(1)     y      y(1)     y    y     y
Solaris2.10 64-bit                   y(1)     y      n        y    y     y
Solaris2.10 32-bit                   y(1)     y      n        y    y     y
IRIX64_6.5 64-bit                    y(2)     y      y        y    y     y
IRIX64_6.5 32-bit                    y(2)     n      n        n    y     y
HPUX11.00                            y(1)     y      y        y    y     y
HPUX11.23-32bit                      n        y      n        y    y     y
HPUX11.23-64bit                      n        n      n        y    y     y
OSF1 v5.1                            y        y      y        y    y     y
X1                                   y        y      y        y    y     n
AIX-5.1, 5.2 & 5.3 32-bit            y        y      y        y    y     y
AIX-5.1, 5.2 & 5.3 64-bit            y        y      y        y    y     y
WinXP Visual Studio 6.0              n        n(9)   n        y    y     y
WinXP .Net                           n        n      n        y(8) y     y
Mac OS X 10.3                        n        y(10)  n        y    y     y
FreeBSD 4.11                         n        n      n        y    y     y
RedHat 7.3  W (3)                    y(1)     y(11)  n        y    y     y
RedHat 7.3  W Intel (3)              n        y      n        y    y     y
RedHat 7.3  W PGI (3)                n        y      n        y    y     y
RedStorm (16)			     n        y      n        y    y     n
SuSe x86_64 gcc (3,13)               n        y(12)  n        y    y     y
SuSe x86_64 icc (3,13)               n        y(14)  n        y    y     y
Linux 2.4 Xeon C Lustre Intel (3,6)  n        y      n        y    y     y
Linux 2.4 SuSE ia64 C Intel (3,7)    y        y      y        y    y     y
Linux 2.4 SGI Altix ia64 Intel (3)   y        y      y        y    y     y


Platform                             Shared        static-  Thread-  STREAM- 
                                     libraries(4)  exec     safe     VFD    
IBM BG/L 			     n              y       n        n
Solaris2.8 64-bit                    y              x       y        y
Solaris2.8 32-bit                    y              x       y        y
Solaris2.9 64-bit                    y              x       y        y
Solaris2.9 32-bit                    y              x       y        y
Solaris2.10 64-bit                   y              x       y        y
Solaris2.10 32-bit                   y              x       y        y
IRIX64_6.5 64-bit                    y              y       y        y
IRIX64_6.5 32-bit                    y              y       y        y
HPUX11.00                            y              x       n        y
HPUX11.23                            y              y       n        y
OSF1 v5.1                            y              y       n        y
X1                                   n              y       n        y
AIX-5.1, 5.2 & 5.3 32-bit            n              y       n        y
AIX-5.1, 5.2 & 5.3 64-bit            n              y       n        y
WinXP Visual Studio 6.0              y              y       n        n
WinXP .Net                           y              y       n        n
Mac OS X 10.3                        y              y       n        y
FreeBSD 4.11                         y              y       y        y
RedHat 7.3   W (3)                   y              y       y        y
RedHat 7.3  W  Intel (3)             n              y       n        y
RedHat 7.3  W  PGI (3)               n              y       n        y
RedStorm 			     n              y       n        y
SuSe x86_64 gcc (3,13)               n              y       n        y
SuSe x86_64 icc (3,13)               y              y(15)   n        y
Linux 2.4 Xeon C Lustre Intel (3,6)  y              y       n        y
Linux 2.4 SuSE ia64 C Intel (3,7)    y              y       n        n
Linux 2.4 SGI Altix ia64 Intel  (3)  y              y       n        y


Compiler versions for each platform are listed in the "Platforms Tested" 
table found elsewhere in this file (RELEASE.txt).  Unless otherwise noted, 
compilers used are the system compilers.

Footnotes:  (1) Using mpich 1.2.6
            (2) Using mpt and mpich 1.2.6.
            (3) Linux 2.4 with GNU, Intel, and PGI compilers, as indicated.  
                  W or C indicates workstation or cluster, respectively.
            (4) Shared libraries are provided only for the C library, 
                except on Windows where they are provided for C and C++.
            (5) Using mpt.
            (6) Linux 2.4.21-32.0.1.  Xeon cluster with ELsmp-perfctr-lustre 
                and Intel compilers
            (7) Linux 2.4.21, SuSE_292.til1.  Ia64 cluster with Intel compilers
            (8) Intel 8.1
            (9) One test of this release failed with Compaq Visual Fortran 6.6c.
                No binary fortran release will be provided. Users should build
                the library by themselves and use it at their own risk. 
                We recommend that users use HDF5 1.7 instead 
                or use Compaq Visual Fortran 6.0.
           (10) IBM XLF and Absoft
           (11) PGI, Absoft.  No shared libraries with Absoft; 
                use '--disable-shared'.
           (12) PGI and Intel compilers for both C and Fortran
           (13) AMD Opteron x86_64
           (14) ifort
           (15) Yes with C and Fortran, but not with C++
           (16) Only serial is ported.  PFS does not work for PHDF5 yet.
           FMB/EIP - 2005/11/10


Known Problems
==============
* Intel Compilers for Linux x86_86 platforms (EM64T-based, v8.1) has
  optimization error in the data types conversion code.  Before running
  configure, edit the file config/intel-flags by changing the setting of
  PROD_CFLAGS from -O3 to -O0, then run configure.  AKC - 2005/11/10.

* Fortran testing and compiling failures on windows XP 
  1. Compaq visual fortran 6.6c with VS 6.0
     The Fortran tests failed for both release, release dll, debug and debug
     dll. The failure is a random one. We won't provide fortran libraries. The
     same test passed with the 1.7.51 snapshot. You may find the 1.7.51 
     snapshot under ftp://hdf.ncsa.uiuc.edu/pub/outgoing/hdf5/snapshots/.
  2. Intel fortran 8.1 under .Net environment
     The fortran library cannot even be compiled. Some users have pointed this
     to intel forum.

* When testing parallel HDF5 with the C compiler version MIPSpro 7.4.3 at IRIX
  6.5, set enviroment variable MPI_TYPE_MAX to be a bigger number, for example 
  120000, in order to pass the complicated collective IO tests inside parallel 
  HDF5 library. This is not a problem inside parallel HDF5 library. You can 
  always set a bigger number in your system.
                                  KY - 2005/10/6

* A contiguous or chunked dataset created by a sequential version may
  not be modified with a parallel version of the library. 
  Use the H5Pset_alloc_time function with H5D_ALLOC_TIME_EARLY to set up the 
  dataset creation property list to avoid the problem.
                                    EIP - 2005/09/09

* The dataset created or rewritten with the v1.6.3 library or after can't 
  be read with the v1.6.2 library or before when Fletcher32 EDC(filter) is 
  enabled.  There was a bug in the calculating code of the Fletcher32 
  checksum in the library before v1.6.3.  The checksum value wasn't consistent 
  between big-endian and little-endian systems.  This bug was fixed in 
  Release 1.6.3.  However, after fixing the bug, the checksum value is no 
  longer the same as before on little-endian system.  The library release 
  after 1.6.4 can still read the dataset created or rewritten with the library
  of v1.6.2 or before.  SLU - 2005/7/8

* For version 6 (6.02 and 6.04) of the Portland Group compiler on AMD Opteron
  processor, there's a bug in the compiler for optimization(-O2).  The library
  failed in several tests but all related to multi driver.  The problem has 
  been reported to the vendor.  

* test/big fails sometimes with the message "Possible overlap with another
  region."  The test selects regions randomly, and this error occurs when
  two regions overlap each other; it is a bug in the test and not in
  HDF5.  Since the error is triggered by a random situation, it will
  usually disappear if the test is re-run.

* Newer SGI MIPSpro compilers (version 7.4.x) support C99 features but it
  has a "guard" statement in stdint.h that will #error and skip the rest
  of the header file if C99 option is not used explicitly.  Hardset
  $CC to c99 will resolve the problem. AKC - 2004/12/13

* On IBM AIX systems, parallel HDF5 mode will fail some tests with error
  messages like "INFO: 0031-XXX ...".  This is from the command poe.
  Set the environment variable MP_INFOLEVEL to 0 to minimize the messages
  and run the tests again.
  The tests may fail with messages like "The socket name is already
  in use".  HDF5 does not use sockets (except for stream-VFD).  This is
  due to problems of the poe command trying to set up the debug socket.
  Check if there are many old /tmp/s.pedb.* staying around.  These are
  sockets used by the poe command and left behind due to failed commands.
  Ask your system administrator to clean them out.  Lastly, request IBM
  to provide a means to run poe without the debug socket.

* Two h5dump xml tests(h5dump --xml thlink.h5 and h5dump --xml tmany.h5) 
  failed on windows xp with .NET for debug and debug dll. Release and 
  Release dll work fine. 

* The h5dump tests may fail to match the expected output on some platforms
  (e.g. parallel jobs, Windows) where the error messages directed to
  "stderr" do not appear in the "right order" with output from stdout.
  This is not an error.

* The stream-vfd test uses ip port 10007 for testing. If another
  application is already using that port address, the test will hang
  indefinitely and has to be terminated by the kill command. To try the
  test again, change the port address in test/stream_test.c to one not
  being used in the host.

* The --enable-static-exec configure flag fails to compile for Solaris
  platforms. This is due to the fact that not all of the system
  libraries on Solaris are available in a static format.

  The --enable-static-exec configure flag also fails to correctly compile
  on IBM SP2 platform for the serial mode. The parallel mode works fine
  with this option.

  The --enable-static-exec configure flag also fails to correctly compile
  on the HPUX 11.00.
  
  It is suggested that you don't use this option on these platforms
  during configuration.

* The Stream VFD was not tested yet under Windows.


* Before building HDF5 F90 Library from source on Crays 
  replace H5Aff.f90, H5Dff.f90 and H5Pff.f90 files in the fortran/src
  subdirectory in the top level directory with the Cray-specific files
  from the site:
  ftp://ftp.ncsa.uiuc.edu/HDF/HDF5/current/src/patches/

* Use --disable-shared configure flag if building with Absoft Fortran
  compiler.

* Information about building with PGI and Intel compilers is available in
  INSTALL file sections 5.7 and 5.8.

* In LANL QSC, the new cc compiler has problems converting small values of
  long long (absolute values less than 1**-308) to double.  This triggers
  the test/dtypes to report failure in the
      Testing random sw long double -> double conversions
  If -ieee is used, the converted doubles spread over the range 0.0 to 1**-308.
  If -ieee is not used, the converted double values are mostly 0.0 but
  occasionally as 1**-308.  This has been reported to the system staff.
  All other tests have passed.

* Fortran release DLL randomly failed with Compaq Visual Fortran 6.6c on
  Windows. 

* Fortran DLL built with Intel 8.1 in .NET environment crushed the compiler,
  Building Fortran static library with Intel 8.1 in .NET environment 
  requires manually setting the project file.
  Please contact to hdfhelp@ncsa.uiuc.edu if you need to build
  Fortran static library with Intel 8.1 with .NET environment.

* On at least one system, SDSC DataStar, the scheduler (in this case
  LoadLeveler) sends job status updates to standard error when you run
  any executable that was compiled with the parallel compilers.

  This causes problems when running "make check" on parallel builds, as
  many of the tool tests function by saving the output from test runs,
  and comparing it to an exemplar.

  The best solution is to reconfigure the target system so it no longer
  inserts the extra text.  However, this may not be practical.

  In such cases, one solution is to "setenv HDF5_Make_Ignore yes" prior to
  the configure and build.  This will cause "make check" to continue after
  detecting errors in the tool tests.  However, in the case of SDSC DataStar,
  it also leaves you with some 150 "failed" tests to examine by hand.

  A second solution is to write a script to run serial tests and filter
  out the text added by the scheduler.  A sample script used on SDSC
  DataStar is given below, but you will probably have to customize it
  for your installation.

  Observe that the basic idea is to insert the script as the first item
  on the command line which executes the test.  The script then
  executes the test and filters out the offending text before passing
  it on.

        #!/bin/csh

        set STDOUT_FILE=~/bin/serial_filter.stdout
        set STDERR_FILE=~/bin/serial_filter.stderr

        rm -f $STDOUT_FILE $STDERR_FILE

        ($* > $STDOUT_FILE) >& $STDERR_FILE

        set RETURN_VALUE=$status

        cat $STDOUT_FILE

        tail +3 $STDERR_FILE

        exit $RETURN_VALUE

  You get the HDF make files and test scripts to execute your filter script
  by setting the environment variable "RUNSERIAL" to the full path of the
  script prior to running configure for parallel builds.  Remember to
  "unsetenv RUNSERIAL" before running configure for a serial build.

  Note that the RUNSERIAL environment variable exists so that we can
  prefix serial runs as necessary on the target system.  On DataStar,
  no prefix is necessary.  However, on an MPICH system, the prefix might
  have to be set to something like "/usr/local/mpi/bin/mpirun -np 1" to
  get the serial tests to run at all.

  In such cases, you will have to include the regular prefix in your
  filter script.

%%%%1.6.4%%%%   Release Information for hdf5-1.6.4 (15/March/05)


HDF5 version 1.6.4 released on Tue Mar 15 20:38:48 CST 2005
================================================================================

INTRODUCTION
============
This document describes the differences between HDF5-1.6.3 and
HDF5-1.6.4, and contains information on the platforms tested and
known problems in HDF5-1.6.4. For more details check the HISTORY.txt
file in the HDF5 source.

The HDF5 documentation can be found on the NCSA ftp server
(ftp.ncsa.uiuc.edu) in the directory:

     /HDF/HDF5/docs/

For more information look at the HDF5 home page at:
   
    http://hdf.ncsa.uiuc.edu/HDF5/

If you have any questions or comments, please send them to:

    hdfhelp@ncsa.uiuc.edu


CONTENTS
========
- New Features
- Support for new platforms and languages
- Bug Fixes since HDF5-1.6.3
- Documentation
- Platforms Tested
- Supported Configuration Features Summary
- Known Problems


New Features
============
    Source code distribution:
    -------------------------

    The High-Level (HL) C APIs were added to the source code distribution.
    For HL documentation, see
    http://hdf.ncsa.uiuc.edu/HDF5/hdf5_hl/doc/RM_hdf5hl.html.

    The HL library, libhdf5_hl.a(so), is built and installed by default. 
    Use --disable-hl configure flag to disable the HL library.

    Library:
    --------
        - We recommend you to use SZIP v2.0 with this release. 
          For more information see
          http://hdf.ncsa.uiuc.edu/doc_resource/SZIP/ 
        - The compound datatype has been enhanced with a new feature of size 
            adjustment.  The size can be increased and decreased (without
            cutting the last member).  No API change is involved.  SLU - 
            2004/10/1
        - Removed PABLO support.  2005/01/20 EIP 

    Parallel Library:
    -----------------
        - Allow compressed, chunked datasets to be read in parallel.
            QAK - 2004/10/04

    Tools:
    ------
	- New tool, h5jam.  See HDF5 Reference Manual.  2004/10/08	      

    F90 API:
    --------
          No new features in this release.

    C++ API:
    --------
	- Started using C library's reference counting in place of the class
	  RefCounter, which existed before the C mechanism was available.  
	  As a result, RefCounter has been removed.  2005/03/12 BMR


Support for new platforms, languages and compilers.
=======================================

    Configuration
    -------------
	- Upgraded from GNU autoconf 2.53 to autoconf 2.59.  JML - 2005/01/31


Bug Fixes since HDF5-1.6.3 release
==================================

    Library
    -------
        - Fixed a racing condition in MPIPOSIX virtual file drive close
	  function.  Now all processes must completed the close before any
	  of them is returned.  This prevents some "faster" processes start
	  accessing the file for another purpose (e.g., open with truncate)
	  while other "slower" processes have not closed the same file with
	  the previous purpose.  AKC - 2005/03/01
	- H5Tget_member_value calls for enum datatype didn't return correct 
          value if H5Tenum_valueof was called first.  It's fixed.  SLU - 
          2005/02/08
        - For variable-length string, H5Tget_class returned H5T_STRING as its
          class.  But H5Tdetect_class and H5Tget_member_class considered it
          as H5T_VLEN.  This is fixed to let all these 3 functions treat it
          as H5T_STRING.  SLU - 2005/02/08
        - The byte order of all 1-byte integer types was fixed as
          little-endian even on a big-endian machine.  It's corrected.
          SLU - 2005/02/07
        - Fixed segmentation fault when calling H5Fflush with an attribute that
          hasn't had a value written to it open.  QAK - 2004/10/18
        - Backed out support for bitfield and time types in H5Tget_native_type.
          Leave it to future support.  The function simply returns error 
          message of "not support" for bitfield and time types. SLU - 2004/10/5
        - Fixed address check in Core VFL driver to avoid spurious address/size
          overflows for odd valued addresses and/or sizes.  QAK - 2004/09/27
        - Fixed problem where chunked datasets were not able to be deleted
          from a file under certain circumstances.  QAK - 2004/09/27/

    Configuration
    -------------
	- IRIX64 MIPSpro compiler of 7.4.x supports C99 features.  Default
	  to use the 'c99' compiler if available. AKC - 2004/12/13
	- Intel v8.0 compiler would infinite loop when compiling some test
	  code with -O3 option.  Changed enable-production default compiler
	  option to -O2. AKC - 2004/12/06
	- Long double is assumed to be a supported C data type.  It is a
	  standard C89 type. AKC - 2004/10/22

    Performance
    -------------
    Many changes were made to the library to improve performance,
    especially for the variable-length datatypes and metadata cache.
   
    Tools
    -----
        - h5fc and h5c++ work correctly when -c compiler flag
          is used.  EIP - 2005/03/14        
	- Fixed h5dump to print attributes data in ASCII if -r option is used.
	  AKC - 2004/11/18
        - Fixed space utilization reported in h5ls to correct error 
          in formula used.  QAK - 2004/10/22

    Documentation 
    ------------- 

    F90 API
    -------
       - On windows, previously Fortran DLL built and tested failed.
         Now Fortran DLL has been built and tested successfully
         with Dec Fortran 6.6c or Dec Fortran 6.0.

    C++ API
    -------


Documentation
=============

    HDF5 Library documentation
    --------------------------
    No substantive changes to the structure or types of content in the 
    HDF5 Library documentation.

    Windows installation documentation
    ----------------------------------
    1. On Windows zlib has been updated to 1.2.2. You may find the binary at
       either http://www.zlib.net/zlib122-dll.zip or
              ftp://hdf.ncsa.uiuc.edu/lib-external/zlib/bin/windows

    2. Only DLLs of external libraries (zlib and szip) are linked with the 
       HDF5 Library. We will no longer provide binary to link static library 
       with HDF5. For details, please check INSTALL_Windows in this directory.
        

Platforms Tested
================

    AIX 5.1  (32 and 64-bit)      xlc 6.0.0.6
                                  xlf 8.1.1.3
    				  xlC 6.0.0.6
				  mpcc_r 6.0.0.6
                                  mpxlf_r 8.1.1.3
				  xlc 5.0.2.5
				  xlf 7.1.1.2
				  xlC 5.0.2.5
				  mpcc_r 5.0.2.5
				  mpxlf_r 7.1.1.2
    AIX 5.2 (32/64 bit)           xlc 6.0.0.8
                                  xlC 6.0.0.9
                                  xlf 8.1.1.7
                                  mpcc_r 6.0.0.8
                                  mpxlf_r 8.1.1.7
    AIX 5.2 (32/64 bit, LLNL frost)    xlc 6.0.0.8
                                  xlC 6.0.0.8
                                  xlf 8.1.1.7
                                  mpcc_r 6.0.0.8
                                  mpxlf_r 8.1.1.7
    Cray T90 sn7001 10.0.0md      Cray Standard C Version 6.4.0.3
                                  Cray Fortran Version 3.4.0.0
    Cray SV1 sn9617 10.0.1.2      Cray Standard C Version 6.6.0.3.6
                                  Cray Fortran Version 3.6.0.3.1
    FreeBSD 4.9                   gcc 2.95.4
                                  g++ 2.95.4
                                  gcc 3.2.3, 3.3.6, 3.4.4, 4.0.0
    HP-UX B.11.00                 HP C  HP92453-01 A.11.01.20 
                                  HP F90 v2.4
                                  HP ANSI C++ B3910B A.03.13
                                  MPIch 1.2.4
    IRIX64 6.5 (tesla -64)        MIPSpro cc 7.4.2m
                                  F90 MIPSpro 7.4.2m
                                  C++ MIPSpro cc 7.4.2m
    IRIX64 6.5 (64 & n32)         MIPSpro cc 7.3.1.3m
                                  F90 MIPSpro 7.3.1.3m (64 only)
                                  C++ MIPSpro cc 7.3.1.3m
				  mpt 1.6
    Linux 2.4.20-28.7             gcc 2.96
    (eirene, verbena)             gcc 3.3.2
                                  PGI compilers (pgcc, pgf90, pgCC) 
                                  version 5.2-1
                                  Absoft Fortran compiler v9.0
                         	  Intel(R) C++ 32-bit Version 8.1
    				  Intel(R) Fortran 32-bit Version 8.1
                                  MPIch 1.2.6
    Linux 2.4.21-268-smp x86_64   gcc 3.3.1 (SuSE Linux, AMD)
    (mir)                         PGI 5.2-1 C and F90 (with k3-32) 
                         	  Intel(R) C++ 32-bit Version 8.1
    				  Intel(R) Fortran 32-bit Version 8.1
    Linux 2.4.21-sgi303r2 Altix 
          SMP ia64                Intel(R) C++ Version 8.1
    (cobalt)                      Intel(R) Fortran Itanium(R) Version 8.1
                                  SGI MPI
    OSF1 V5.1 (QSC)               Compaq C V6.5-011 
                                  HP Fortran V5.5A-3548
				  Compaq C++ V6.5-036  
				  MPIX200_64_r13.4
    OSF1 V5.1 (PSC)               Compaq C V6.5-303 
                                  HP Fortran V5.5A-3548
				  Compaq C++ V6.5-040  
				  MPIX200_64_r13.4
                                  FORTRAN 90 2.0 Patch 107356-04 
    SunOS 5.8 32,46               Sun WorkShop 6 update 2 C 5.3
     (Solaris 2.8)                Sun WorkShop 6 update 2 Fortran 90
                                  Sun WorkShop 6 update 2 C++ 5.3
    SunOS 5.9 32,64               Sun C 5.6 2004/07/15
     (Solaris 2.9)                Sun Fortran 95 8.0 2004/07/15
                                  Sun C++ 5.6 2004/07/15
    TFLOPS r1.0.4 v4.5.2 i386     pgcc Rel 3.1-4i with mpich-1.2.4 with
                                          local modifications
    Xeon Linux 2.4.20-31.9smp_perfctr_lustre
    (tungsten)	                  Intel(R) C++ Version 8.0
                                  Intel(R) Fortran Compiler Version 8.0
    IA-64 Linux 2.4.21.SuSE_128.bef1 ia64
    (NCSA tg-login)               Intel(R) C++ Version 8.0
                                  Intel(R) Fortran Compiler Version 8.0
				  mpich-gm-1.2.5..intel
    Windows XP                    MSVC++.NET
                                  MSVC++ 6.0
                                  Compaq Visual Fortran 6.6C
                                  Intel 8.1 C++
    MAC OS X                      Darwin 7.5
                                  gcc and g++ Apple Computer, Inc. GCC 
                                  version 1175, based on gcc version 3.3.2
                                  IBM XL Fortran version 8.1 
                                  Absoft Fortran compiler v8.2


Supported Configuration Features Summary
========================================

Key:   y   = tested and supported
       n   = not supported or not tested in this release
       x   = not working in this release
       dna = does not apply
       ( ) = footnote appears below second table

Platform                             C        F90    F90      C++  zlib  SZIP
                                     parallel        parallel      
Solaris2.8 64-bit                    y        y      y(1)     y    y     y
Solaris2.8 32-bit                    y        y      y(1)     y    y     y
Solaris2.9 64-bit                    y(1)     y      y(1)     y    y     y
Solaris2.9 32-bit                    y(1)     y      y(1)     y    y     y
IRIX64_6.5 64-bit                    y(2)     y      y        y    y     y
IRIX64_6.5 32-bit                    y(2)     n      n        n    y     y
HPUX11.00                            y(1)     y      y        y    y     y
OSF1 v5.1                            y        y      y        y    y     y
T90 IEEE                             n        y      n        n    y     n
SV1                                  y(5)     y      y(5)     n    y     n
TFLOPS                               y(1)     n      n        n    y     n
AIX-5.1 & 5.2 32-bit                 y        y      y        y    y     y
AIX-5.1 & 5.2 64-bit                 y        y      y        y    y     y
WinXP Visual Studio 6.0              n        y(9)   n        y    y     y
WinXP .Net                           n        n      n        y(8) y     y
Mac OS X 10.3                        n        y(10)  n        y    y     y
FreeBSD 4.9                          y(1)     n      n        y    y     y
RedHat 7.3  W (3)                    y(1)     y(11)  n        y    y     y
RedHat 7.3  W Intel (3)              n        y      n        y    y     y
RedHat 7.3  W PGI (3)                n        y      n        y    y     y
SuSe x86_64 gcc (3,13)               n        y(12)  n        y    y     y
SuSe x86_64 icc (3,13)               n        y(14)  n        y    y     y
Linux 2.4 Xeon C Lustre Intel (3,6)  n        y      n        y    y     y
Linux 2.4 SuSE ia64 C Intel (3,7)    y        y      y        y    y     y
Linux 2.4 SGI Altix ia64 Intel (3)   y        y      y        y    y     y


Platform                             Shared        static-  Thread-  STREAM- 
                                     libraries(4)  exec     safe     VFD    
Solaris2.8 64-bit                    y              x       y        y
Solaris2.8 32-bit                    y              x       y        y
Solaris2.9 64-bit                    y              x       y        y
Solaris2.9 32-bit                    y              x       y        y
IRIX64_6.5 64-bit                    y              y       y        y
IRIX64_6.5 32-bit                    y              y       y        y
HPUX11.00                            y              x       n        y
OSF1 v5.1                            y              y       n        y
T90 IEEE                             n              y       n        y
SV1                                  n              y       n        y
TFLOPS                               n              y       n        n
AIX-5.1 & 5.2 32-bit                 n              y       n        y
AIX-5.1 & 5.2 64-bit                 n              y       n        y
WinXP Visual Studio 6.0              y              y       n        n
WinXP .Net                           y              y       n        n
Mac OS X 10.3                        y              y       n        y
FreeBSD 4.9                          y              y       y        y
RedHat 7.3   W (3)                   y              y       y        y
RedHat 7.3  W  Intel (3)             n              y       n        y
RedHat 7.3  W  PGI (3)               n              y       n        y
SuSe x86_64 gcc (3,13)               n              y       n        y
SuSe x86_64 icc (3,13)               y              y(15)   n        y
Linux 2.4 Xeon C Lustre Intel (3,6)  y              y       n        y
Linux 2.4 SuSE ia64 C Intel (3,7)    y              y       n        n
Linux 2.4 SGI Altix ia64 Intel  (3)  y              y       n        y


Compiler versions for each platform are listed in the "Platforms Tested" 
table found elsewhere in this file (RELEASE.txt).  Unless otherwise noted, 
compilers used are the system compilers.

Footnotes:  (1) Using mpich 1.2.6
            (2) Using mpt and mpich 1.2.6.
            (3) Linux 2.4 with GNU, Intel, and PGI compilers, as indicated.  
                  W or C indicates workstation or cluster, respectively.
            (4) Shared libraries are provided only for the C library, 
                except on Windows where they are provided for C and C++.
            (5) Using mpt.
            (6) Linux 2.4.20-31.9.  Xeon cluster with smp_perfctr_lustre 
                and Intel compilers
            (7) Linux 2.4.21, SuSE_128.befl.  Ia64 cluster with Intel compilers
            (8) Intel 8.1
            (9) Compaq Visual Fortran 6.6C
           (10) IBM XLF and Absoft
           (11) PGI, Absoft.  No shared libraries with Absoft; 
                use '--disable-shared'.
           (12) PGI and Intel compilers for both C and Fortran
           (13) AMD Opteron x86_64
           (14) ifort
           (15) Yes with C and Fortran, but not with C++
       FMB/EIP - 2005/03/15


Known Problems
==============
* test/big fails sometimes with the message "Possible overlap with another
  region."  The test selects regions randomly, and this error occurs when
  two regions overlap each other; it is an bug in the test and not in
  HDF5.  Since the error is triggered by a random situation, it will
  usually disappear if the test is re-run.

* Cray SV1 fails to correctly convert between floating-point and "long double"
  for software conversion.  Problem is being investigated. SLU - 2005/03/04

* Newer SGI MIPSpro compilers (version 7.4.x) support C99 features but it
  has a "guard" statement in stdint.h that will #error and skip the rest
  of the header file if C99 option is not used explicitly.  Hardset
  $CC to c99 will resolve the problem. AKC - 2004/12/13

* On IBM AIX systems, parallel HDF5 mode will fail some tests with error
  messages like "INFO: 0031-XXX ...".  This is from the command poe.
  Set the environment variable MP_INFOLEVEL to 0 to minimize the messages
  and run the tests again.
  The tests may fail with messages like "The socket name is already
  in use".  HDF5 does not use sockets (except for stream-VFD).  This is
  due to problems of the poe command trying to set up the debug socket.
  Check if there are many old /tmp/s.pedb.* staying around.  These are
  sockets used by the poe command and left behind due to failed commands.
  Ask your system administrator to clean them out.  Lastly, request IBM
  to provide a mean to run poe without the debug socket.

* Fortran subroutine h5pget_driver_f doesn't return a correct driver 
  information.

* There are two h5dump xml tests(h5dump --xml thlink.h5 and 
  h5dump --xml tmany.h5) failed on windows xp with .NET for debug and 
  debug dll. Release and Release dll work fine. 

* The h5dump tests may fail to match the expected output on some platforms
  (e.g. parallel jobs, Windows) where the error messages directed to
  "stderr" do not appear in the "right order" with output from stdout.
  This is not an error.

* The stream-vfd test uses ip port 10007 for testing. If another
  application is already using that port address, the test will hang
  indefinitely and has to be terminated by the kill command. To try the
  test again, change the port address in test/stream_test.c to one not
  being used in the host.

* The --enable-static-exec configure flag fails to compile for Solaris
  platforms. This is due to the fact that not all of the system
  libraries on Solaris are available in a static format.

  The --enable-static-exec configure flag also fails to correctly compile
  on IBM SP2 platform for the serial mode. The parallel mode works fine
  with this option.
  
  It is suggested that you don't use this option on these platforms
  during configuration.

* The Stream VFD was not tested yet under Windows. It is not supported
  in the TFLOPS machine.

* The ./dsets tests failed in the TFLOPS machine if the test program,
  dsets.c, is compiled with the -O option.  The hdf5 library still works
  correctly with the -O option.  The test program works fine if it is
  compiled with -O1 or -O0.  Only -O (same as -O2) causes the test
  program to fail.

* Certain platforms give false negatives when testing h5ls:
    - Cray T90IEEE give errors during testing when displaying
      some floating-point values. These are benign differences due to
      the different precision in the values displayed.
      h5ls appears to be dumping floating-point numbers correctly.

* Before building HDF5 F90 Library from source on Crays 
  replace H5Aff.f90, H5Dff.f90 and H5Pff.f90 files in the fortran/src
  subdirectory in the top level directory with the Cray-specific files
  from the site:
  ftp://ftp.ncsa.uiuc.edu/HDF/HDF5/current/src/patches/

* On some platforms that use Intel and Absoft compilers to build HDF5 fortran 
  library, compilation may fail for fortranlib_test.f90, fflush1.f90 and 
  fflush2.f90 complaining about exit subroutine. Comment out the line 
  IF (total_error .ne. 0) CALL exit (total_error)

* Use --disable-shared configure flag if building with Absoft Fortran
  compiler

* Information about building with PGI and Intel compilers is available in
  INSTALL file sections 5.7 and 5.8

* In LANL QSC, the new cc compiler has problems converting small values of
  long long (absolute values less than 1**-308) to double.  This triggers
  the test/dtypes to report failure in the
      Testing random sw long double -> double conversions
  If -ieee is used, the converted doubles spread over the range 0.0 to 1**-308.
  If -ieee is not used, the converted double values are mostly 0.0 but
  occasionally as 1**-308.  This has been reported to the system staff.
  All other tests have passed.

* The C++ library's tests fails when compiling with PGI C++ compiler.  The
  workaround until the problem is correctly handled is to use the
  flag "--instantiate=local" prior to the configure and build steps, as:
        setenv CXX "pgCC --instantiate=local"  for pgCC 5.02 and higher
        setenv CXX "pgCC -tlocal" for others

* Fortran release DLL randomly failed with compaq visual fortran 6.6c on
  windows. 

* Fortran DLL built with Intel 8.1 in .NET environment crushed the compiler,
  To build Fortran Static library with Intel 8.1 in .NET environment 
  needs manually setting the project file,
  please contact to hdfhelp@ncsa.uiuc.edu if you need to build
  fortran static library with Intel 8.1 with .NET environment.

* On at least one system, (SDSC DataStar), the scheduler (in this case
  LoadLeveler) sends job status updates to standard error when you run
  any executable that was compiled with the parallel compilers.

  This causes problems when running "make check" on parallel builds, as
  many of the tool tests function by saving the output from test runs,
  and comparing it to an exemplar.

  The best solution is to reconfigure the target system so it no longer
  inserts the extra text.  However, this may not be practical.

  In such cases, one solution is to "setenv HDF5_Make_Ignore yes" prior to
  the configure and build.  This will cause "make check" to continue after
  detecting errors in the tool tests.  However, in the case of SDSC DataStar,
  it also leaves you with some 150 "failed" tests to examine by hand.

  A second solution is to write a script to run serial tests and filter
  out the text added by the scheduler.  A sample script used on SDSC
  DataStar is given below, but you will probably have to customize it
  for your installation.

  Observe that the basic idea is to insert the script as the first item
  on the command line which executes the test.  The script then
  executes the test and filters out the offending text before passing
  it on.

        #!/bin/csh

        set STDOUT_FILE=~/bin/serial_filter.stdout
        set STDERR_FILE=~/bin/serial_filter.stderr

        rm -f $STDOUT_FILE $STDERR_FILE

        ($* > $STDOUT_FILE) >& $STDERR_FILE

        set RETURN_VALUE=$status

        cat $STDOUT_FILE

        tail +3 $STDERR_FILE

        exit $RETURN_VALUE

  You get the HDF make files and test scripts to execute your filter script
  by setting the environment variable "RUNSERIAL" to the full path of the
  script prior to running configure for parallel builds.  Remember to
  "unsetenv RUNSERIAL" before running configure for a serial build.

  Note that the RUNSERIAL environment variable exists so that we can
  can prefix serial runs as necessary on the target system.  On DataStar,
  no prefix is necessary.  However on an MPICH system, the prefix might
  have to be set to something like "/usr/local/mpi/bin/mpirun -np 1" to
  get the serial tests to run at all.

  In such cases, you will have to include the regular prefix in your
  filter script.


%%%%1.6.3%%%%   Release Information for hdf5-1.6.3 (22/September/04)

HDF5 version 1.6.3 released on Wed Sep 22 11:30:11 CDT 2004
================================================================================


INTRODUCTION

This document describes the differences between HDF5-1.6.2 and
HDF5-1.6.3, and contains information on the platforms tested and
known problems in HDF5-1.6.3. For more details check the HISTORY.txt
file in the HDF5 source.

The HDF5 documentation can be found on the NCSA ftp server
(ftp.ncsa.uiuc.edu) in the directory:

     /HDF/HDF5/docs/

For more information look at the HDF5 home page at:
   
    http://hdf.ncsa.uiuc.edu/HDF5/

If you have any questions or comments, please send them to:

    hdfhelp@ncsa.uiuc.edu

CONTENTS

- New Features
- Support for new platforms and languages
- Bug Fixes since HDF5-1.6.2
- Documentation
- Platforms Tested
- Supported Configuration Features Summary
- Known Problems


New Features
============

    Configuration:
    --------------
        - Added some initial support for making purify (or similar memory
            checking products) happier by initializing buffers to zero and
            disabling the internal free list code.  To take advantage of this,
            define 'H5_USING_PURIFY' in your CFLAGS when building the library.
            QAK - 2004/07/23

        - WINDOWS building,testing and installing improvements

          - On Windows, FORTRAN,C++ and C projects are merged into one zip file, 
            users can choose an option to build either FORTRAN or C++ or both 
            with basic C library.For detailed information,
            please read INSTALL_Windows.txt.

          - On Windows, szip compression library with or without encoder can be easily
            turned off or on when building HDF5.  For detailed information,
            please read INSTALL_Windows.txt, especially section V. 
  
          - On Windows, an optional procedure for building,testing and installing
            HDF5 from command line is provided. This procedure is supposed to be
            convenient for experienced users, please read 
            INSTALL_windows_From_Command_Line.txt for details.

          - On Windows, an alternative short instruction document for building,
            testing and installing HDF5 is provided. This instruction is supposed to
            be convenient for general users, please read 
            INSTALL_Windows_Short.txt for details.

          - On Windows, h5repack,h5diff,h5ls and h5import tool tests have been added.
          KY - 2004/9/16
  

    Library:
    --------
        - Modified the way how HDF5 calculates 'pixels_per_scanline' parameter for
          SZIP compression. Now there is no restriction on the size and shape of the 
          chunk except that the total number of elements in the chunk cannot be 
          bigger than 'pixels_per_block' parameter provided by the user.
                                                                    EIP - 2004/07/21 
        - HDF5 can now link to SZIP with or without szip's encoder.
          The new API function H5Zget_filter_info can be used to check
          szip's status.  Attempting to assign szip to a dataset property
          list or attempting to write with szip will generate an error if
          szip's encoder is disabled.  JL/NF - 2004/6/30
        - SZIP always uses K13 compression.  This flag no longer needs to
          be set when calling H5Pset_szip.  If the flag for CHIP
          compression is set, it will be ignored (since the two are mutually
          exclusive).  JL/NF - 2004/6/30
        - A new API function H5Fget_name was added.  It returns the name
          of the file by object(file, group, data set, named data type,
          attribute) ID.  SLU - 2004/06/29
        - A new API function H5Fget_filesize was added.  It returns the
          actual file size of the opened file.  SLU - 2004/06/24
	- Added option that if $HDF5_DISABLE_VERSION_CHECK is set to 2,
	  will suppress all library version mismatch warning messages.
	  AKC - 2004/4/14

    Parallel Library:
    -----------------

    Tools:
    ------
        - h5repack was added to the tools suite. h5repack regenerates an HDF5 file 
	  from another HDF5 file, optionally applying HDF5 filters (compression) 
	  and/or chunking to the copied file. The filters options are read from 
	  the command line. See /doc/html/Tools.html for more details.
	  PVN - 2004/9/13

        - h5dump includes new features:
           1) Printing of dataset filters, storage layout and fill value information.
           2) Print a list of the file contents.
	   3) Escape non printing characters.
	   4) Print the content of the boot block.
	   5) Print array indices with the data (the default).
	  These options are all switch controlled. See /doc/html/Tools.html for more details.
	  PVN - 2004/9/13
	      

    F90 API:
    --------
        - added new subroutines:
                h5fget_filesize_f
                h5iget_file_id_f
                h5premove_filter_f
                h5zget_filter_info_f
                                         EIP 2004/9/21
 
        - added new h5fget_name_f and h5fget_filesize_f subroutines
                                         EIP 2004/07/08

    C++ API:
    --------
	- Added wrappers for array and variable length datatypes APIs
	- Added wrappers for newly added APIs from H5T, H5F, and H5I
	- Added many wrappers that were missing from the H5P API
	- Added the ability to reference HDF5 objects to these classes:
	  DataSet, DataType, Group, and H5File (wrappers for H5R APIs)
	BMR 2004/08/04


Support for new platforms, languages and compilers.
=======================================
        - Added PGI Fortran support for Linux64 (x86_64) systems
                            EIP - 2004/08/19
        - Absoft compiler f95 v9.0 is supported on Linux 2.4 32bit
                            EIP - 2004/07/29 
        - HDF5 Fortran APIs are supported on Mac OSX with IBM XL Fortran
          compiler version 8.1. This is a default compiler.
        - HDF5 Fortran APIs are supported on MAC OSX with Absoft F95 compiler
          version 8.2; set F9X environment variable to f95, for example
          setenv F9X f95
          Use --disable-shared --enable-static configure flags when Absoft
          compiler is used.
                             EIP - 2004/07/27

Bug Fixes since HDF5-1.6.2 release
==================================

    Library
    -------
	- Fixed parallel bug in which some processes attempted collective
	  I/O while others did independent I/O.  Bug appeared when some
	  processes used point selections, and others didn't.  JRM - 2004/9/15
        - Corrected error where dataset region references were written in an
          incorrect way on Cray machines.  PVN & QAK - 2004/09/13
        - The H5Tget_native_type now determines the native type for integers
          based on the precision. This is to avoid cases of wrongly converting        
          an int to a short in machines that have a short of 8 bytes but with
	  32bit precision (e.g Cray SV1). PVN - 2004/09/07 
        - Changed H5Dread() to not overwrite data in an application's buffer
          with garbage when accessing a chunked dataset with an undefined fill
          value and an unwritten chunk is uncountered.  QAK - 2004/08/25
        - Fixed error which could cause a core dump when a type conversion
          routine was registered after a compound datatype had been
          converted and then an equivalent compound datatype was converted
          again.  QAK - 2004/08/07
        - Fixed memory overwrite when encoding "multi" file driver information
          for file's superblock.  QAK - 2004/08/05
        - Fixed obscure bug where a filter which failed during chunk allocation
          could allow library to write uncompressed data to disk but think
          the data was compressed.  QAK - 2004/07/29
        - Fixed bug where I/O to an extendible chunked dataset with zero-sized
          dimensions would cause library to fail an assertion.
          QAK - 2004/07/27
        - Fixed bug where chunked datasets which have filters defined,
          allocation time set to "late" and whose chunks don't align with
          the dataspace bounds could have incorrect data stored when
          overwriting the entire dataset on the first write.  QAK - 2004/07/27
        - Added check to ensure that dataspaces have extents set. JML-2004/07/26
        - Fixed bug on some Solaris systems where HDF5 would try to use
          gettimeofday() when that function didn't work properly.
          JML - 2004/07/23
        - Fixed bug in H5Sset_extent_simple where setting maximum size to
          non-zero, then to zero would cause an error.  JML - 2004/07/20
        - Allow NULL pointer for buffer parameter to H5Dread & H5Dwrite
          when not writing data ("none" selection or hyperslab or point
          selection with no elements defined).  QAK - 2004/07/20
        - Calling H5Gcreate() on "/" or "." throws an error instead of
          failing quietly. JML - 2004/07/19
        - Fixed bug where setting file address size to be very small could
          trigger an assert if the file grew to more than 64 KB.  Now throws
          an error and data can be recovered. JL/NF - 2004/07/14
        - Fixed bug where "resurrecting" a dataset was failing.
          QAK - 2004/07/14
        - Fixed bug where incorrect data could be read from a chunked dataset
          after it was extended.  QAK - 2004/07/12
        - After compound datatype with variable-length string in the fields
          is committed to file, the size is messed up when it's read back.
          Fixed.  SLU - 2004/06/11
        - Fixed potential file corruption bug when a block of metadata could
          overlap the end of the internal metadata accumulator buffer and
          the buffer would be extended correctly, but would incorrectly 
          change it's starting address.  QAK - 2004/06/09
        - Opaque datatype with no tag failed for some operations.  Fixed.
          SLU - 2004/6/3
        - Fixed potential file corruption bug where dimensions that were
          too large (a value greater than could be represented in 32-bits)
          could cause the incorrect amount of space to be allocated in a
          file for the raw data for the dataset.  QAK - 2004/06/01
	- Fixed dtypes "sw long double -> double" failure in QSC class
	  machines.  AKC - 2004/4/16

    Configuration
    -------------
        - Fixed the long compile time of H5detect.c when v7.x Intel Compiler
	  is used with optimization NOT off.  AKC - 2004/05/20

    Performance
    -------------

    Tools
    -----
        - On SGI h5dump displayed only part of the data due to the bug
          in the system printf; fixed.
                                             EIP - 2004/09/21 
    Documentation 
    ------------- 
        - Several descriptive errors have been fixed throughout the 
          documentation, particularly in the reference manual (RM).
          A selection particularly worthy of note would be these: 
        - The H5Pset_szip description in the RM has been expanded and
          corrected to facilitate use of SZIP compression.
        - A note has been added to the H5Dcreate description that an
          unexplained failure is likely to be due to a property list error 
          that is detected only at the time of dataset creation.
        -
        FMB - 2004/09/21

    F90 API
    -------
    
    Fortran functions h5dwrite/read_f and h5awrite/read_f do not
    accept dims parameter of INTEGER type anymore. Code was removed.
                                                    2004/04/15
    C++ API
    -------
	- H5::Exception's and its subclasses' constructors that were 
	  overloaded to take char pointers are removed and constructors
	  that passed in reference of 'string' are changed to pass 
	  by value.  In addition, the default value of the data member
	  H5::Exception::detailMessage is changed from 0/NULL to 
	  DEFAULT_MSG ("No detailed information provided".)
	- Prototype for DSetCreatPropList::setLayout is changed: 1st parameter
          is removed because it was there only by mistake.
	BMR 2004/08/04

Documentation
=============
    HDF5 Library documentation
    --------------------------
        - HDF5 C++ API Reference Manual
          This document has been added to the HDF5 document set.  
          The predecessor document, "HDF5 C++ Interfaces," has been removed.
        - HDF5 C++ API Design Specification
          A first draft of this document has been added to the HDF5 document 
          set.  The draft has been posted on the HDF5 website and a link 
          has been added to the HDF5 documents index (index.html at the top 
          level of the document set).
        - Parallel HDF5
          In prior releases, the HDF5 document set included two parallel
          HDF5 documents.  Those documents have been deleted and the 
          HDF5 documents index (index.html) now links to a "Parallel HDF5" 
          page on the HDF5 website (http://hdf.ncsa.uiuc.edu/HDF5/PHDF5/).
        - HDF5 High Level APIs
          Links to the HDF5 High Level APIs and to the HDF5 High Level 
          Reference Manual have been added to the HDF5 documents index
          (index.html).
        - HDF5 Reference Manual
          Tools: h5repack -- A description of the new h5repack tool has been 
              added to the Tools page.
          Tools: h5dump -- Several new options have been added to h5dump.
          New functions -- All new functions have been added to the RM.
          API changes -- Relevant function descriptions have been updated in
              instances where programming interfaces have changed. 
        FMB - 2004/09/21

    Windows installation documentation
    ----------------------------------
        -  INSTALL_Windows.txt has been enhanced to include instructions building 
           HDF5 with FORTRAN and C++. 
        -  Two optional installation documents have been added. They are
           INSTALL_Windows_Short.txt and INSTALL_Windows_From_Command_Line.txt.
           INSTALL_Windows_Short.txt is supposed to help general users who
           only want to build,test and install HDF5 in a quick way.
           INSTALL_Windows_From_Command_Line.txt is supposed to help users who
           would like to compile,test and install HDF5 in command line environment.
        -  INSTALL_Windows_withcpp.txt and INSTALL_Windows_withF90.txt became
           obsolete. Files are deleted from the release_docs directory.
        KY 2004/09/16, EIP 2004/9/21
        


Platforms Tested
================

    AIX 5.1  (32 and 64-bit)      xlc 6.0.0.6
                                  xlf 8.1.1.3
    				  xlC 6.0.0.6
				  mpcc_r 6.0.0.6
                                  mpxlf_r 8.1.1.3
				  xlc 5.0.2.5
				  xlf 7.1.1.2
				  xlC 5.0.2.5
				  mpcc_r 5.0.2.5
				  mpxlf_r 7.1.1.2
    AIX 5.2                       xlc 6.0.0.8
                                  xlC 6.0.0.8
                                  xlf 8.1.1.6
                                  mpcc_r 6.0.0.8
                                  mpxlf_r 8.1.1.6
    Cray T90 sn7001 10.0.0md      Cray Standard C Version 6.4.0.3
                                  Cray Fortran Version 3.4.0.0
    Cray T3E sn6606 2.0.6.08      Cray Standard C Version 6.6.0.3
                                  Cray Fortran Version 3.6.0.3
    Cray SV1 sn9617 10.0.1.2      Cray Standard C Version 6.6.0.3.6
                                  Cray Fortran Version 3.6.0.3.1
    FreeBSD 4.9                   gcc 2.95.4
                                  g++ 2.95.4
    HP-UX B.11.00                 HP C  HP92453-01 A.11.01.20 
                                  HP F90 v2.4
                                  HP ANSI C++ B3910B A.03.13
                                  MPIch 1.2.4
    IRIX64 6.5 (64 & n32)         MIPSpro cc 7.3.1.3m
                                  F90 MIPSpro 7.3.1.3m (64 only)
                                  C++ MIPSpro cc 7.3.1.3m
				  mpt 1.6
    Linux 2.4.18                  gcc 2.96, 3.3.2
                                  g++ 3.3.2
                                  Intel(R) C++ Version 7.1
                                  Intel(R) Fortran Compiler Version 7.1
                                  PGI compilers (pgcc, pgf90, pgCC) version 5.0-2
                                  MPIch 1.2.4
                                  Absoft Fortran compiler v9.0
    Linux 2.4.20-8                gcc 3.3.2
                                  PGI compilers (pgcc, pgf90, pgCC) version 5.0-2
                                  MPIch 1.2.4
    Linux 2.4.21-2.9.5ws #3       gcc 3.2.3 (Red Hat Linux 3.2.3-16)
          SMP x86_64              g++ 3.2.3
    Linux 2.4.21-4.ELsmp	  Intel(R) C++ 32-bit Version 8.0
    				  Intel(R) Fortran 32-bit Version 8.0
				  gcc 3.4.0
				  MPICH 1..5.2 Inmel 8.0
    Linux 2.4.19-SMP  x86_64      gcc (GCC) 3.2.2 (SuSE Linux)
                                  g++ 3.2.2
    Linux 2.6.4-52smp x86_64      gcc 3.3.3 (SuSE Linux 9.1 AMD64))
                                  PGI 5.2-1 C and F90 

    Linux 2.4.21-sgi Altix 
          SMP ia64                Intel(R) C++ Version 8.0
                                  Intel(R) Fortran Itanium(R) Version 8.0
                                  SGI MPI
    OSF1 V5.1                     Compaq C V6.5-303 
                                  HP Fortran V5.5A-3548
				  Compaq C++ V6.5-040  
				  MPI_64bit_R13
    SunOS 5.7(32 and 64 bit)      WorkShop Compilers 5.0 98/12/15 C 5.0
     (Solaris 2.7)                WorkShop Compilers 5.0 98/12/15 C++ 5.0 
                                  WorkShop Compilers 5.0 98/10/25 
                                  FORTRAN 90 2.0 Patch 107356-04 
    SunOS 5.8(32 and 64 bit)      Sun WorkShop 6 update 2 C 5.3
     (Solaris 2.8)                Sun WorkShop 6 update 2 Fortran 90
                                  Sun WorkShop 6 update 2 C++ 5.3
    TFLOPS r1.0.4 v4.4.3 i386     pgcc Rel 3.1-4i with mpich-1.2.4 with
                                          local modifications
    IA-32 Linux 2.4.18            gcc 2.96
                                  Intel(R) C++ Version 7.0
                                  Intel(R) Fortran Compiler Version 7.0

    Xeon Linux 2.4.20-31.9smp_perfctr_lustre
	                          Intel(R) C++ Version 8.0
                                  Intel(R) Fortran Compiler Version 8.0
                                  
    IA-64 Linux 2.4.16 ia64       gcc version 3.0.4
                                  Intel(R) C++ Version 7.1
                                  Intel(R) Fortran Compiler Version 7.1

    IA-64 Linux 2.4.21.SuSE_128.bef1 ia64
                                  Intel(R) C++ Version 8.0
                                  Intel(R) Fortran Compiler Version 8.0
				  mpich-gm-1.2.5..intel

    Windows 2000 (NT5.0)          MSVC++ 6.0
                                  MSVC++ .NET
                                  DEC Visual Fortran 6.0
                                  Intel C and F90 compilers version 7.1
				  Code Warrior 8.0
    Windows XP                    MSVC++.NET
                                  MSVC++ 6.0
                                  DEC Visual Fortran 6.0

    MAC OS X                      Darwin 7.5
                                  gcc and g++ Apple Computer, Inc. GCC 
                                  version 1175, based on gcc version 3.3.2
                                  IBM XL Fortran version 8.1 
                                  Absoft Fortran compiler v8.2
                                  


Supported Configuration Features Summary
========================================

Key:   y = tested and supported
       n = not supported or not tested in this release
       x = not working in this release
       dna = does not apply
       ( ) = footnote appears below second table

Platform                             C        F90    F90      C++  zlib  SZIP
                                     parallel        parallel      
Solaris2.7 64-bit                    y (1)    y      y (1)    y    y     y
Solaris2.7 32-bit                    y (1)    y      y (1)    y    y     y
Solaris2.8 64-bit                    y (1)    y      y (1)    y    y     y
Solaris2.8 32-bit                    y        y      y (1)    y    y     y
IRIX64_6.5 64-bit                    y (2)    y      y        y    y     y
IRIX64_6.5 32-bit                    y (2)    n      n        n    y     y
HPUX11.00                            y (1)    y      y        y    y     y
OSF1 v5.1                            y        y      y        y    y     y
T90 IEEE                             n        y      n        n    y     n
T3E                                  y (5)    y      y (5)    n    y     n
SV1                                  y (5)    y      y (5)    n    y     n
TFLOPS                               y (1)    n      n        n    y     n
AIX-5.1 & 5.2 32-bit                 y        y      y        y    y     y
AIX-5.1 & 5.2 64-bit                 y        y      y        y    y     y
WinXP Visual Studio 6.0              n        y (9)  n        y    y     y
WinXP .Net                           n        n      n        y    y     y
WinXP Code Warrior                   n        n      n        n    y     y
Win2000 Visual Studio 6.0            n        y (10) n        y    y     y
Win2000 Visual Studio Intel (6)      n        y      n        y    y     y
Win2000 .Net                         n        n      n        y    y     y
Mac OS X 10.3                        n        y (11) n        y    y     y
FreeBSD 4.9                          y (1)    n      n        y    y     y
RedHat 7   W        (3)              y (1)    y (12) n        y    y     y
RedHat 7.3  W Intel (3)              n        y      n        y    y     y
RedHat 7.3  W PGI   (3)              n        y      n        y    y     y
RedHat 8 & SuSe x86_64 gcc     (3)   n        y (13) n        y    y     y
Linux 2.4 Xeon C Lustre Intel (3,7)  n        y      n        y    y     y
Linux 2.4 SuSE ia64 C   Intel (3,8)  y        y      y        y    y     y
Linux 2.4 SGI Altix ia64 Intel (3)   y        y      y        y    y     y


Platform                             Shared         static-  Thread-  STREAM- 
                                     libraries (4)  exec     safe     VFD    
Solaris2.7 64-bit                    y              x        y        y
Solaris2.7 32-bit                    y              x        y        y
Solaris2.8 64-bit                    y              x        y        y
Solaris2.8 32-bit                    y              x        y        y
IRIX64_6.5 64-bit                    y              y        y        y
IRIX64_6.5 32-bit                    y              y        y        y
HPUX11.00                            y              x        n        y
OSF1 v5.1                            y              y        n        y
T90 IEEE                             n              y        n        y
T3E                                  n              y        n        y
SV1                                  n              y        n        y
TFLOPS                               n              y        n        n
AIX-5.1 & 5.2 32-bit                 n              y        n        y
AIX-5.1 & 5.2 64-bit                 n              y        n        y
WinXP Visual Studio 6.0              y              y        n        n
WinXP .Net                           y              y        n        n
WinXP Code Warrior                   n              y        n        n
Win2000 Visual Studio 6.0            y              y        n        n
Win2000 Visual Studio Intel (6)      y              y        n        n
Win2000 .Net                         y              y        n        n
Mac OS X 10.3                        y              y        n        y
FreeBSD 4.9                          y              y        y        y
RedHat 7    W       (3)              y              y        y        y
RedHat 7.3  W Intel (3)              n              y        n        y
RedHat 7.3  W PGI   (3)              n              y        n        y
RedHat 8 & SuSe x86_64 gcc     (3)   n              y        n        y
Linux 2.4 Xeon C Lustre Intel (3,7)  y              y        n        y
Linux 2.4 SuSE ia64 C Intel   (3,8)  y              y        n        n
Linux 2.4 SGI Altix ia64 Intel (3)   y              y        n        y



Compiler versions for each platform are listed in the "Platforms Tested" 
table found elsewhere in this file (RELEASE.txt).  Unless otherwise noted, 
compilers used are the system compilers.

Footnotes:  (1) Using mpich 1.2.4
            (2) Using mpt and mpich 1.2.4
            (3) Linux 2.4 with GNU, Intel, and PGI compilers, as indicated  
                W or C indicates workstation or cluster, respectively
            (4) Shared libraries are provided only for the C library, 
                except on Windows where they are provided for C and C++
            (5) Using mpt
            (6) Intel 7.1 compilers in Visual Studio 6.0 environment
            (7) Linux 2.4.20-31.9.  Xeon cluster with smp_perfctr_lustre 
                and Intel compilers
            (8) Linux 2.4.21, SuSE_128.befl.  Ia64 cluster with Intel compilers
            (9) DEC Visual Fortran 6.0 and Intel 7.1
            (10) DEC Visual Fortran 6.0
            (11) IBM XLF and Absoft
            (12) PGI, Absoft
            (13) PGI
       FMB/EIP - 2004/09/21



Known Problems
==============
* h5fc and h5c++ compilation scripts have a bug: object files (*.o) cannot be
  created when source code is compiled using h5fc or h5c++. We will provide
  a fix. Please check ftp://ftp.ncsa.uiuc.edu/HDF/HDF5/current/src/patches/ 
  for the patches.

* Fortran subroutine h5pget_driver_f doesn't return a correct driver information.

* There are two h5dump xml tests(h5dump --xml thlink.h5 and h5dump --xml tmany.h5)
  failed on windows xp with .NET for debug and debug dll. Release and Release
  dll work fine. 

* The h5dump tests may fail to match the expected output on some platforms
  (e.g. parallel jobs, Windows) where the error messages directed to
  "stderr" do not appear in the "right order" with output from stdout.
  This is not an error.

* The stream-vfd test uses ip port 10007 for testing. If another
  application is already using that port address, the test will hang
  indefinitely and has to be terminated by the kill command. To try the
  test again, change the port address in test/stream_test.c to one not
  being used in the host.

* The --enable-static-exec configure flag fails to compile for Solaris
  platforms. This is due to the fact that not all of the system
  libraries on Solaris are available in a static format.

  The --enable-static-exec configure flag also fails to correctly compile
  on IBM SP2 platform for the serial mode. The parallel mode works fine
  with this option.
  
  It is suggested that you don't use this option on these platforms
  during configuration.

* The Stream VFD was not tested yet under Windows. It is not supported
  in the TFLOPS machine.

* The ./dsets tests failed in the TFLOPS machine if the test program,
  dsets.c, is compiled with the -O option.  The hdf5 library still works
  correctly with the -O option.  The test program works fine if it is
  compiled with -O1 or -O0.  Only -O (same as -O2) causes the test
  program to fail.

* Certain platforms give false negatives when testing h5ls:
    - Cray J90 and Cray T90IEEE give errors during testing when displaying
      some floating-point values. These are benign differences due to
      the different precision in the values displayed and h5ls appears to
      be dumping floating-point numbers correctly.

* Before building HDF5 F90 Library from source on Crays 
  replace H5Aff.f90, H5Dff.f90 and H5Pff.f90 files in the fortran/src
  subdirectory in the top level directory with the Cray-specific files
  from the site:
  ftp://ftp.ncsa.uiuc.edu/HDF/HDF5/current/src/patches/

* On some platforms that use Intel and Absoft compilers to build HDF5 fortran library,
  compilation may fail for fortranlib_test.f90, fflush1.f90 and fflush2.f90
  complaining about exit subroutine. Comment out the line 
  IF (total_error .ne. 0) CALL exit (total_error)

* On IA32 and IA64 systems, if you use a compiler other than GCC (such as
  Intel's ecc or icc compilers), you will need to modify the generated
  "libtool" program after configuration is finished. On or around line 104 of
  the libtool file, there are lines which look like:

      # How to pass a linker flag through the compiler.
      wl=""

  change these lines to this:

      # How to pass a linker flag through the compiler.
      wl="-Wl,"

  UPDATE: This is now done automatically by the configure script. However, if
  you still experience a problem, you may want to check this line in the
  libtool file and make sure that it has the correct value.

* Information about building with PGI and Intel compilers is available in
  INSTALL file sections 5.7 and 5.8

* In LANL QSC, the new cc compiler has problems converting small values of
  long long (absolute values less than 1**-308) to double.  This triggers
  the test/dtypes to report failure in the
      Testing random sw long double -> double conversions
  If -ieee is used, the converted doubles spread over the range 0.0 to 1**-308.
  If -ieee is not used, the converted double values are mostly 0.0 but
  occasionally as 1**-308.  This has been reported to the system staff.
  All other tests have passed.

* On at least one system, (SDSC DataStar), the scheduler (in this case
  LoadLeveler) sends job status updates to standard error when you run
  any executable that was compiled with the parallel compilers.

  This causes problems when running "make check" on parallel builds, as
  many of the tool tests function by saving the output from test runs,
  and comparing it to an exemplar.

  The best solution is to reconfigure the target system so it no longer
  inserts the extra text.  However, this may not be practical.

  In such cases, one solution is to "setenv HDF5_Make_Ignore yes" prior to
  the configure and build.  This will cause "make check" to continue after
  detecting errors in the tool tests.  However, in the case of SDSC DataStar,
  it also leaves you with some 150 "failed" tests to examine by hand.

  A second solution is to write a script to run serial tests and filter
  out the text added by the scheduler.  A sample script used on SDSC
  DataStar is given below, but you will probably have to customize it
  for your installation.

  Observe that the basic idea is to insert the script as the first item
  on the command line which executes the test.  The script then
  executes the test and filters out the offending text before passing
  it on.

        #!/bin/csh

        set STDOUT_FILE=~/bin/serial_filter.stdout
        set STDERR_FILE=~/bin/serial_filter.stderr

        rm -f $STDOUT_FILE $STDERR_FILE

        ($* > $STDOUT_FILE) >& $STDERR_FILE

        set RETURN_VALUE=$status

        cat $STDOUT_FILE

        tail +3 $STDERR_FILE

        exit $RETURN_VALUE

  You get the HDF make files and test scripts to execute your filter script
  by setting the environment variable "RUNSERIAL" to the full path of the
  script prior to running configure for parallel builds.  Remember to
  "unsetenv RUNSERIAL" before running configure for a serial build.

  Note that the RUNSERIAL environment variable exists so that we can
  can prefix serial runs as necessary on the target system.  On DataStar,
  no prefix is necessary.  However on an MPICH system, the prefix might
  have to be set to something like "/usr/local/mpi/bin/mpirun -np 1" to
  get the serial tests to run at all.

  In such cases, you will have to include the regular prefix in your
  filter script.

%%%%1.6.2%%%%   Release Information for hdf5-1.6.2 (12/February/04)

HDF5 version 1.6.2 released on Thu Feb 12 14:18:13 CST 2004
================================================================================


INTRODUCTION

This document describes the differences between HDF5-1.6.1 and
HDF5-1.6.2, and contains information on the platforms tested and
known problems in HDF5-1.6.2. For more details check the HISTORY.txt
file in the HDF5 source.

The HDF5 documentation can be found on the NCSA ftp server
(ftp.ncsa.uiuc.edu) in the directory:

     /HDF/HDF5/docs/

For more information look at the HDF5 home page at:
   
    http://hdf.ncsa.uiuc.edu/HDF5/

If you have any questions or comments, please send them to:

    hdfhelp@ncsa.uiuc.edu

CONTENTS

- New Features
- Support for new platforms and languages
- Bug Fixes since HDF5-1.6.1
- Documentation
- Platforms Tested
- Supported Configuration Features Summary
- Known Problems


New Features
============

    Configuration:
    --------------
        - Default of $prefix is changed to $PWD/hdf5 so that multiple
	  builds using --srcdir is possible in the same machine.
	  AKC - 2003/12/1

    Library:
    --------
        - Added H5Iget_ref, H5Iinc_ref and H5Idec_ref routines to the C
          library and the FORTRAN wrapper.  See the reference manual for a
          full description of these new routines.  QAK - 2003/12/11

    Parallel Library:
    -----------------
	- The parallel tests in testpar/ now provides different levels of
	  verbosity via the '-v' option.  The default is less verbose
	  than before.  AKC - 2004/01/23
        - Added parallel test, test_mpio_1wMr, which tests if the
          underlaying parallel I/O system is conforming to the POSIX
          write/read requirement. This version includes options of using
          atomicity and file-sync.  AKC - 2003/11/27

    Tools:
    ------
        - Added option -showconfig to compiler tools (h5cc,h5fc,h5c++).
	  AKC - 2004/01/08
	- Install the "h5cc" and "h5fc" tools as "h5pcc" and "h5pfc"
	  respectively if library is built in parallel mode.  AKC - 2004/01/07
        - Added metadata benchmark (perform/perf_meta).  SLU - 2003/10/03

    C++ API:
    --------


Support for new platforms, languages and compilers.
=======================================
        - HDF5 Fortran APIs are supported on MAC OSX with IBM XL Fortran compiler
          version 8.1 Beta  
          Use --disbale-shared --enable-static flags with configure when 
          building HDF5 Fortran Library on MAC OSX.
        - C and C++ Libraries are available for Linux64 RH8
        - C, C++ and Fortran sequential Libraries, and C and Fortran parallel
          Libraries are available for Altix (Linux ia64)

Bug Fixes since HDF5-1.6.1 release
==================================

    Library
    -------
        - Fixed problem with H5Tget_native_type() not handling opaque fields
            correctly.  QAK - 2004/01/31
        - Fixed several errors in B-tree deletion code which could cause a
            B-tree (used with groups and chunked datasets) to become corrupt
            with the right sequence of deleted objects.  QAK - 2004/01/19
        - Fixed small internal memory leaks of fill-value information.
            QAK - 2004/01/13
        - Fixed bug that caused variable-length datatypes (strings or sequences)
            used for datasets in files with objects that were unlinked to
            fail to be read/written to a file.  QAK - 2004/01/13
        - Detect situation where szip 'pixels per block' is larger than the
            fastest changing dimension of a dataset's chunk size and disallow
            this (due to limits in szip library).  QAK - 2003/12/31
        - Fixed bug with flattened hyperslab selections that would generate
            incorrect hyperslab information with certain high-dimensionality
            combinations of start/stride/count/block information.
            QAK - 2003/12/31
        - Fixed bug with variable-length datatypes used in compound datatypes.
            SLU - 2003/12/29
        - Fixed bug in parallel I/O routines that would cause reads from
            "short datasets" (datasets which were only partially written out)
            to return invalid data.  QAK & AKC - 2003/12/19
        - Fixed bug where scalar dataspaces for attributes were reporting as
            simple dataspaces.  QAK - 2003/12/13
        - Fixed problem with selection offsets of hyperslab selections in
            chunked datasets causing the library to go into an infinite loop.
            QAK - 2003/12/13
        - Fixed H5Giterate to avoid re-using index parameter after iteration
            callback has been called (allows iteration callback to modify the
            index parameter itself).  QAK - 2003/12/06
        - Fixed various floating-point conversion problems, including a
            change which could corrupt data when converting from double->float.
            QAK - 2003/11/24
        - Changed "single process" metadata writing in library to collective
            I/O by all processes, in order to guarantee correct data being
            written with MPI-I/O.  QAK - 2003/11/20
        - Fixed problems with fill values and variable-length types and also
            I/O on VL values that were set to NULL.  QAK - 2003/11/08
        - Fixed problems with MPI datatypes that caused ASCI Q machine to
            hang.  QAK - 2003/10/28
        - Removed HDF5_MPI_PREFER_DERIVED_TYPES environment variable support,
            since it had no benefit.  QAK - 2003/10/28
        - Single hyperslab selections (which were set with only one call to
            H5Sselect_hyperslab) that had dimensions that could be "flattened"
            but were interspersed with dimensions that could not be flattened
            were not correctly handled, causing core dumps.  QAK - 2003/10/25
        - Avoid metadata cache from preempting current dataset object header
            when looking up information about the named datatype that the
            dataset uses.  QAK - 2003/10/20

    Configuration
    -------------
        - Parallel I/O with the MPI-I/O driver will no longer work if the
            filesystem is not POSIX compliant.  The "HDF5_MPI_1_METAWRITE"
            environment variable has been removed.  QAK - 2004/01/30

    Performance
    -------------
        - More optimizations to inner loops of datatype conversions for
            integers and floats which give a 10-50% speedup.  QAK - 2003/11/07
        - Hoisted invariant 'if/else's out of inner datatype conversion loop for
            integer and floating-point values, giving about a 20% speedup.
            QAK - 2003/10/20

    Tools
    -----
	- Fixed h5redeploy which sometimes complain too many argument for the
	  test command. (The complain did not hinder the h5redploy to proceed
	  correctly.) AKC - 2003/11/03

    Documentation 
    ------------- 


Documentation
=============



Platforms Tested
================

    AIX 5.1  (32 and 64-bit)      xlc 6.0.0.2
                                  xlf 8.1.0.3
    				  xlC 6.0.0.4
				  xlc 5.0.2.5
				  xlf 7.1.1.2
				  xlC 5.0.2.5
				  mpcc_r 5.0.2.5
				  mpxlf_r 7.1.1.2
                                  poe 3.2.0.10
    Cray T3E sn6606 2.0.6.08      Cray Standard C Version 6.6.0.2
                                  Cray Fortran Version 3.6.0.2
    Cray SV1 sn9617 10.0.1.2      Cray Standard C Version 6.6.0.2
                                  Cray Fortran Version 3.6.0.2
    Cray T90IEEE 10.0.0md         Cray Standard C Version 6.4.0.3
                                  Cray Fortran Version 3.4.0.0
    FreeBSD 4.9                   gcc 2.95.4
                                  g++ 2.95.4
    HP-UX B.11.00                 HP C  HP92453-01 A.11.01.20 
                                  HP F90 v2.4
                                  HP ANSI C++ B3910B A.03.13
                                  MPIch 1.2.4
    IRIX64 6.5 (64 & n32)         MIPSpro cc 7.3.1.3m
                                  F90 MIPSpro 7.3.1.3m (64 only)
                                  C++ MIPSpro cc 7.3.1.3m
    Linux 2.4.18                  gcc 2.96, 3.3.2
                                  g++ 3.3.2
                                  Intel(R) C++ Version 7.1
                                  Intel(R) Fortran Compiler Version 7.1
                                  PGI compilers (pgcc, pgf90, pgCC) version 5.0-2
                                  MPIch 1.2.4
    Linux 2.4.20-8                gcc 3.3.2
                                  PGI compilers (pgcc, pgf90, pgCC) version 5.0-2
                                  MPIch 1.2.4
    Linux 2.4.21-2.9.5ws #3       gcc 3.2.3 (Red Hat Linux 3.2.3-16)
          SMP x86_64              g++ 3.2.3
    Linux 2.4.19-SMP  x86_64      gcc (GCC) 3.2.2 (SuSE Linux)
                                  g++ 3.2.2

    Linux 2.4.21-sgi Altix 
          SMP ia64                Intel(R) C++ Version 7.1
                                  Intel(R) Fortran Itanium(R) Version 7.1
                                  SGI MPI
    OSF1 V5.1                     Compaq C V6.4-014
				  Compaq Fortran V5.5-2602
				  Compaq Fortran V5.5-1877
				  Compaq C++ V6.5-033
				  Compaq C++ V6.5-030
				  MPI_64bit_R13
    SunOS 5.7(32 and 64 bit)      WorkShop Compilers 5.0 98/12/15 C 5.0
     (Solaris 2.7)                WorkShop Compilers 5.0 98/12/15 C++ 5.0 
                                  WorkShop Compilers 5.0 98/10/25 
                                  FORTRAN 90 2.0 Patch 107356-04 
    SunOS 5.8(32 and 64 bit)      Sun WorkShop 6 update 2 C 5.3
     (Solaris 2.8)                Sun WorkShop 6 update 2 Fortran 90
                                  Sun WorkShop 6 update 2 C++ 5.3
    TFLOPS r1.0.4 v4.4.2 i386     pgcc Rel 3.1-4i with mpich-1.2.4 with
                                          local modifications
    IA-32 Linux 2.4.18            gcc 2.96
                                  Intel(R) C++ Version 7.0
                                  Intel(R) Fortran Compiler Version 7.0
                                  
    IA-64 Linux 2.4.16 ia64       gcc version 3.0.4
                                  Intel(R) C++ Version 7.1
                                  Intel(R) Fortran Compiler Version 7.1

    IA-64 Linux 2.4.21.SuSE_128.bef1 ia64
                                  Intel(R) C++ Version 7.1
                                  Intel(R) Fortran Compiler Version 7.1
				  mpich-gm-1.2.5..intel

    Windows 2000 (NT5.0)          MSVC++ 6.0
                                  DEC Visual Fortran 6.0
                                  Intel C and F90 compilers version 7.1
				  Code Warrior 8.0
    Windows XP                    MSVC++.NET
    MAC OS X                      Darwin 7.2
                                  gcc and g++ Apple Computer, Inc. GCC 
                                  version 1175, based on gcc version 3.3.2
                                  IBM XL Fortran version 8.1 Beta
                                  


Supported Configuration Features Summary
========================================

Key:   y = tested and supported
       n = not supported or not tested in this release
       x = not working in this release
       dna = does not apply
       ( ) = footnote appears below second table

Platform                    C   C        F90    F90      C++  Shared        zlib
                                parallel        parallel      libraries (4)
Solaris2.7 64-bit           y   y (1)    y      y (1)    y    y             y
Solaris2.7 32-bit           y   y (1)    y      y (1)    y    y             y
Solaris2.8 64-bit           y   y (1)    y      y (1)    y    y             y
Solaris2.8 32-bit           y   y        y      y (1)    y    y             y
IRIX64_6.5 64-bit           y   y (2)    y      y        y    y             y
IRIX64_6.5 32-bit           y   y (2)    n      n        n    y             y
HPUX11.00                   y   y (1)    y      y        y    y             y
OSF1 v5.1                   y   y        y      y        y    y             y
T3E                         y   y (5)    y      y (5)    n    n             y
SV1                         y   y (5)    y      y (5)    n    n             y
T90 IEEE                    y   y (5)    y      y (5)    n    n             y
TFLOPS                      n   y (1)    n      n        n    n             y
AIX-5.1 32-bit              y   y        y      y        y    n             y
AIX-5.1 64-bit              y   y        y      y        y    n             y
WinXP Visual Studio (7)     y   n        n      n        y    y             y
WinXP Intel                 y   n        n      n        y    y             y
WinXP CW                    y   n        n      n        n    n             y
Win2000 Visual Studio       y   n        y      n        y    y             y
Win2000 Intel               y   n        y      n        y    y             y
Mac OS X 10.3               y   n        y      n        y    y             y
FreeBSD 4.9                 y   y (1)    n      n        y    y             y
RedHat 7, 8 & 9 ia32        y   y (1)    y(PGI) n        y    y             y
    W gcc (3)
RedHat 7.3 ia32 W Intel (3) y   n        y      n        y    n             y
RedHat 7.3 ia32 W PGI (3)   y   n        y      n        y    n             y
RedHat 7 ia32 C Intel (3)   y   n        y      n        y    n             y
RedHat 7.1 ia64 C Intel (3) y   n        y      n        y    n             y
RedHat 8 & SuSe x86_64      y   n        n      n        y    n             y
    gcc (3)
Linux 2.4 SGI Altix ia64    y   n        y      n        y    y             y
    Intel (3) 


Platform                    static-  Thread-  SZIP  GASS  STREAM-  High-  H4/H5 
                            exec     safe                 VFD      level  tools
                                                                   APIs   (6)
Solaris2.7 64-bit           x        y        y     n     y        y      n
Solaris2.7 32-bit           x        y        y     n     y        y      y
Solaris2.8 64-bit           x        y        y     n     y        y      n
Solaris2.8 32-bit           x        y        y     n     y        y      y
IRIX64_6.5 64-bit           x        y        y     y     y        y      y
IRIX64_6.5 32-bit           x        y        y     y     y        y      y
HPUX11.00                   x        n        y     n     y        y      y
OSF1 v5.1                   y        n        y     n     y        y      y
T3E                         y        n        n     n     y        y      y
SV1                         y        n        n     n     y        y      y
T90 IEEE                    y        n        n     n     y        y      n
TFLOPS                      y        n        n     n     n        n      n
AIX-5.1 32-bit              y        n        y     n     y        y      y
AIX-5.1 64-bit              y        n        y     n     y        y      y
WinXP Visual Studio         y        n        y     n     n        y      y
WinXP Intel                 y        n        y     n     n        y      y
WinXP CW                    y        n        y     n     n        y      y
Win2000 Visual Studio       y        n        y     n     n        y      y
Win2000 Intel               y        n        y     n     n        y      y
Mac OS X 10.3               y        n        y     n     y        y      n
FreeBSD 4.9                 y        y        y     n     y        y      y
RedHat 7, 8 & 9 ia32        y        y        y     n     y        y      y
    W gcc (3)
RedHat 7.3 ia32 W Intel (3) y        n        y     n     y        n      n
RedHat 7.3 ia32 W PGI (3)   y        n        y     n     y        n      n
RedHat 7 ia32 C Intel (3)   y        n        y     n     y        y      y
RedHat 7.1 ia64 C Intel (3) y        n        y     n     y        y      y
RedHat 8 & SuSe x86_64      y        n        y     n     y        y      y
    gcc (3)
Linux 2.4 SGI Altix ia64    y        n        y     n     y        y      y
    Intel (3) 


Compiler versions for each platform are listed in the "Platforms Tested" 
table found elsewhere in this file (RELEASE.txt).  Unless otherwise noted, 
compilers used are the system compilers.

Footnotes:  (1) Using mpich 1.2.4.
            (2) Using mpt and mpich 1.2.4.
            (3) Linux 2.4 with GNU, Intel, and PGI compilers, as indicated.  
                W or C indicates workstation or cluster, respectively.
            (4) Shared libraries are provided only for the C library, 
                except on Windows where they are provided for C and C++.
            (5) Using mpt.
            (6) Includes the H4toH5 Library and the h4toh5 and h5toh4 
                utilities.


Known Problems
==============
* Fortran subroutine h5pget_driver_f doesn't return a correct driver information.

* There are two h5dump xml tests(h5dump --xml thlink.h5 and h5dump --xml tmany.h5)
  failed on windows xp with .NET for debug and debug dll. Release and Release
  dll work fine. 

* The h5dump tests may fail to match the expected output on some platforms
  (e.g. parallel jobs, Windows) where the error messages directed to
  "stderr" do not appear in the "right order" with output from stdout.
  This is not an error.

* The stream-vfd test uses ip port 10007 for testing. If another
  application is already using that port address, the test will hang
  indefinitely and has to be terminated by the kill command. To try the
  test again, change the port address in test/stream_test.c to one not
  being used in the host.

* The --enable-static-exec configure flag fails to compile for Solaris
  platforms. This is due to the fact that not all of the system
  libraries on Solaris are available in a static format.

  The --enable-static-exec configure flag also fails to correctly compile
  on IBM SP2 platform for the serial mode. The parallel mode works fine
  with this option.
  
  It is suggested that you don't use this option on these platforms
  during configuration.

* The Stream VFD was not tested yet under Windows. It is not supported
  in the TFLOPS machine.


* The ./dsets tests failed in the TFLOPS machine if the test program,
  dsets.c, is compiled with the -O option.  The hdf5 library still works
  correctly with the -O option.  The test program works fine if it is
  compiled with -O1 or -O0.  Only -O (same as -O2) causes the test
  program to fail.

* Certain platforms give false negatives when testing h5ls:
    - Cray J90 and Cray T90IEEE give errors during testing when displaying
      some floating-point values. These are benign differences due to
      the different precision in the values displayed and h5ls appears to
      be dumping floating-point numbers correctly.

* Before building HDF5 F90 Library from source on Crays 
  replace H5Aff.f90, H5Dff.f90 and H5Pff.f90 files in the fortran/src
  subdirectory in the top level directory with the Cray-specific files
  from the site:
  ftp://hdf.ncsa.uiuc.edu/pub/outgoing/hdf5/hdf5-1.6.2/F90_source_for_Crays

* On some platforms that use Intel compilers to build HDF5 fortran library,
  compilation may fail for fortranlib_test.f90, fflush1.f90 and fflush2.f90
  complaining about exit subroutine. Comment out the line 
  IF (total_error .ne. 0) CALL exit (total_error)

* On IA32 and IA64 systems, if you use a compiler other than GCC (such as
  Intel's ecc or icc compilers), you will need to modify the generated
  "libtool" program after configuration is finished. On or around line 104 of
  the libtool file, there are lines which look like:

      # How to pass a linker flag through the compiler.
      wl=""

  change these lines to this:

      # How to pass a linker flag through the compiler.
      wl="-Wl,"

  UPDATE: This is now done automatically by the configure script. However, if
  you still experience a problem, you may want to check this line in the
  libtool file and make sure that it has the correct value.

* Information about building with PGI and Intel compilers is available in
  INSTALL file sections 5.7 and 5.8

* In LANL QSC, the new cc compiler has problems converting small values of
  long long (absolute values less than 1**-308) to double.  This triggers
  the test/dtypes to report failure in the
      Testing random sw long double -> double conversions
  If -ieee is used, the converted doubles spread over the range 0.0 to 1**-308.
  If -ieee is not used, the converted double values are mostly 0.0 but
  occassionaly as 1**-308.  This has been reported to the system staff.
  All other tests have passed.

* On AIX 5.1 when 64-bit parallel C Library is built with zlib configured in,
  compilation fails for H5Zdeflate.c. To bypass the problem, remove "const"
  definition in front of H5Z_DEFLATE in H5Zpkg.h line 29.

%%%%1.6.1%%%%   Release Information for hdf5-1.6.1 (16/October/03)

15.  Release information for HDF5 version 1.6.1
================================================

INTRODUCTION

This document describes the differences between HDF5-1.6.0 and
HDF5-1.6.1, and contains information on the platforms tested and
known problems in HDF5-1.6.1. For more details check the HISTORY.txt
file in the HDF5 source.

The HDF5 documentation can be found on the NCSA ftp server
(ftp.ncsa.uiuc.edu) in the directory:

     /HDF/HDF5/docs/

For more information look at the HDF5 home page at:
   
    http://hdf.ncsa.uiuc.edu/HDF5/

If you have any questions or comments, please send them to:

    hdfhelp@ncsa.uiuc.edu

CONTENTS

- New Features
- Support for new platforms and languages
- Bug Fixes since HDF5-1.6.0
- Documentation
- Platforms Tested
- Known Problems


New Features
============

    Configuration:
    --------------

    Library:
    --------
        - Added new fields to the H5G_stat_t for more information about an
            object's object header.  QAK 2003/10/06
        - Added new H5Fget_freespace() routine to query the free space in a
            given file.  QAK 2003/10/06

    Parallel Library:
    -----------------

    Tools:
    ------

    C++ API:
    --------
        - Added overloaded functions read and write to H5::Attribute.
          BMR - 2003/04/21
        - Added an overloaded constructor H5::StrType so the need to separately
          set the length of the string type can be eliminated. BMR - 2003/04/21
        - Added overloaded functions read and write to H5::DataSet.
          BMR - 2003/04/27

        The following items were added but not documented in previous releases:

        - On windows, any application, that uses the C++ API dll, must
          include the name HDF5CPP_USEDLL in its project setting. (Feb 17, 2002)
          BMR - 2003/10/10
        - Added missing default constructor H5::H5File. (Apr 26, 2002)
          BMR - 2003/10/10
        - Added new member function H5::DataSet::fillMemBuf per the new C
          API H5Dfill, which fills the elements in a selection for a memory
          buffer with a fill value. (May 16, 2002) BMR - 2003/10/10
        - Added the new member function getMemberIndex to H5::EnumType
          and H5::CompType to match the new C API H5Tget_member_index.  Given
          the name of a member of an enumeration or compound datatype, this
          new function queries the index of the member. (May 16, 2002)
          BMR - 2003/10/10
        - Added these member functions to H5::Group per the new C functions
          H5Gget_num_objs, H5Gget_objname_by_idx and H5Gget_objtype_by_idx:
          + getNumObjs: Returns the number of objects in the group.
          + getObjnameByIdx: Retrieves the name of an object in a group,
                             given an index
          + getObjTypeByIdx: Returns the type of an object in a group,
                             given an index
          (Jan 20, 2003) BMR - 2003/10/10


Support for new platforms, languages and compilers.
=======================================
         - gcc 3.3.1 is supported on Linux.
  

Bug Fixes since HDF5-1.6.0 release
==================================

    Library
    -------
        - Fixed incorrect datatype of the third parameter to the Fortran90
          h5pset(get)_cache_f functions (INTEGER to INTEGER(SIZE_T)) EIP - 2003/10/13
        - Fixed problems with accessing variable-length data datatypes on
            Crays.  QAK - 2003/10/10
        - Fixed potential file corruption bug when too many object header
            messages (probably attributes, from a user perspective) were
            inserted into an object header and certain other conditions were
            met.  QAK - 2003/10/08
        - Changed implementation of internal ID searching algorithm to avoid
            O(n) behavior for many common cases.  QAK - 2003/10/06
        - Allow partial parallel writing to compact datasets.  QAK - 2003/10/06
        - Correctly create reference to shared datatype in attribute, instead
            of making a copy of the shared datatype in the attribute.
            QAK - 2003/10/01
        - Revert changes which caused files >2GB to fail when created with
            MPI-I/O file driver on certain platforms.  QAK - 2003/09/16
        - Allow compound datatypes to grow in size.  SLU - 2003/09/10
        - Detect if a type is already packed before attempting to pack it
            again or check if it is locked.  SLU - 2003/09/10
        - Corrected bug when opening a file twice with read-only permission
            for one open and then closing the read-only access file ID would
            generate an error.  QAK - 2003/09/10
        - Corrected bug in repeated calls to H5Pget_access_plist() which would
            incorrectly manage reference counts of internal information and
            eventually blow up.  QAK - 2003/09/02
        - Return rank of the array datatype on successful call to
            H5Tget_array_dims().  QAK - 2003/08/30
        - Corrected bug in H5Tdetect_class which was not correctly detecting
            datatype classes of fields in nested compound datatypes in some
            circumstances.  QAK - 2003/08/30
        - Corrected bug in sieve buffer code which could cause loss of data
            when a small dataset was created and deleted in quick succession.
            QAK - 2003/08/27
        - Corrected bug in H5Gget_objname_by_idx which was not allowing NULL
            for the name when just querying for the object name's length.
            QAK - 2003/08/25
        - Corrected bug in variable-length string handling which could
            generate a core dump on writing variable-length strings as part
            of a compound datatype on certain architectures.  QAK - 2003/08/25
        - Corrected bug in H5Tget_native_type which would incorrectly compute
            the size of certain compound datatypes and also incorrectly
            compute the offset of the last field for those compound datatypes.
            QAK - 2003/08/25
        - Corrected bug in H5Tget_native_type which would drop string datatype
            metadata (padding, etc.)  QAK - 2003/08/25
        - Corrected bugs in H5Gget_num_objs, H5Gget_objname_by_idx and
            H5Gget_objtype_by_idx to allow them to accept location IDs, not just
            group IDs.  QAK - 2003/08/21
        - Corrected bug when using scalar dataspace for memory selection and
            operating on chunked dataset.  QAK - 2003/08/18
        - Corrected bugs with multiple '/' characters in names for H5Glink
            and H5Gunlink.  QAK - 2003/08/16
        - Corrected bug with user blocks that didn't allow a user block to
            be inserted in front of a file after the file was created.
            QAK - 2003/08/13
        - Corrected errors with using point selections to access data in
            chunked datasets.  QAK - 2003/07/23
        - Corrected error with variable-length datatypes and chunked datasets
            which caused H5Dwrite to fail sometimes.  QAK - 2003/07/19
        - Modified library and file format to support storing indexed storage
            (chunked dataset) B-tree's with non-default internal 'K' values.
            QAK - 2003/07/15
        - Returned H5T_BKG_TEMP support to library after it was accidentally
            removed.  QAK - 2003/07/14

    Configuration
    -------------
        - Fixed the error that caused "make install" to fail because of the
            macro definition syntax of "prefix?=..."  AKC - 2003/07/22

    Performance
    -------------

    Tools
    -----
	- Fixed a segmentation fault of h5diff when percentage option is used.
            AKC - 2003/08/27
        - Switched away from tools using internal "fixtype" function(s) to use
            H5Tget_native_type() internally.  QAK - 2003/08/25

    Documentation 
    ------------- 
        - Added two missing Fortran APIs (h5pget_fapl_mpiposix_f and 
            h5pset_fapl_mpiposix_f) to the reference manual.
            FMB - 2003/10/15
        - Corrected the reference manual descriptions of H5open/h5open_f and 
            H5close/h5close_f to indicate that these calls are required in 
            Fortran90 applications.   FMB - 2003/10/15


Documentation
=============

    Fortran90 APIs are being integrated into the main body of the 
    HDF5 Reference Manual (RM).  This process is complete in all RM sections
    except H5P.

    A PDF version of the RM will be posted on the HDF5 website
    (at http://hdf.ncsa.uiuc.edu/HDF5/doc/PSandPDF/) approximately one week
    after the release.


Platforms Tested
================

    AIX 5.1  (32 and 64-bit)      xlc 6.0.0.2
                                  xlf 8.1.0.3
    				  xlC 6.0.0.4
				  xlc 5.0.2.5
				  xlf 7.1.1.2
				  xlC 5.0.2.5
				  mpcc_r 5.0.2.5
				  mpxlf_r 7.1.1.2
                                  poe 3.2.0.10
    Cray T3E sn6606 2.0.6.08      Cray Standard C Version 6.6.0.2
                                  Cray Fortran Version 3.6.0.2
    Cray SV1 sn9617 10.0.1.2      Cray Standard C Version 6.6.0.2
                                  Cray Fortran Version 3.6.0.2
    Cray T90IEEE 10.0.1.01y       Cray Standard C Version 6.4.0.2.3
                                  Cray Fortran Version 3.4.0.3
    FreeBSD 4.9                   gcc 2.95.4
                                  g++ 2.95.4
    HP-UX B.11.00                 HP C  HP92453-01 A.11.01.20 
                                  HP F90 v2.4
                                  HP ANSI C++ B3910B A.03.13
                                  HP MPI 01.07.00.00
    IRIX 6.5                      MIPSpro cc 7.3.1.2m
    IRIX64 6.5 (64 & n32)         MIPSpro cc 7.3.1.3m
                                  F90 MIPSpro 7.3.1.3m (64 only)
                                  MPIch 1.2.4
    Linux 2.4.18                  gcc 2.96, 3.2.2, 3.3.1
                                  g++ 3.2.2, 3.2.3
                                  Intel(R) C++ Version 7.1
                                  Intel(R) Fortran Compiler Version 7.1
                                  PGI compilers (pgcc, pgf90, pgCC) version 4.0-2
                                  MPIch 1.2.4
    Linux 2.4.20-8                gcc 3.2.2
    OSF1 V5.1                     Compaq C V6.4-014
                                  Compaq C V6.3-027
				  Compaq Fortran V5.5-2602
				  Compaq C++ V6.5-030
				  MPI_64bit_R5
                                  g++ version 3.0 for C++
    SunOS 5.7(32 and 64 bit)      WorkShop Compilers 5.0 98/12/15 C 5.0
     (Solaris 2.7)                WorkShop Compilers 5.0 98/12/15 C++ 5.0 
                                  WorkShop Compilers 5.0 98/10/25 
                                  FORTRAN 90 2.0 Patch 107356-04 
    SunOS 5.8(32 and 64 bit)      Sun WorkShop 6 update 2 C 5.3
     (Solaris 2.8)                Sun WorkShop 6 update 2 Fortran 90
                                  Sun WorkShop 6 update 2 C++ 5.3
    TFLOPS r1.0.4 v4.4.0 i386     pgcc Rel 3.1-4i with mpich-1.2.4 with
                                          local modifications
    IA-32 Linux 2.4.9             gcc 2.96
                                  Intel(R) C++ Version 7.0
                                  Intel(R) Fortran Compiler Version 7.0
                                  
    IA-64 Linux 2.4.16 ia64       gcc version 2.96 20000731
                                  Intel(R) C++ Version 7.0
                                  Intel(R) Fortran Compiler Version 7.0
    Windows 2000 (NT5.0)          MSVC++ 6.0
                                  DEC Visual Fortran 6.0
                                  Intel C and F90 compilers version 7.1
				  Code Warrior 8.0
    Windows XP                    MSVC++.NET
    MAC OS X                      Darwin 6.8
                                  gcc and g++ Apple Computer, Inc. GCC 
                                  version 1175, based on gcc version 3.1
                                  


Supported Configuration Features Summary
========================================

    In the tables below
          y   = tested and supported
          n   = not supported or not tested in this release
          x   = not working in this release
          dna = does not apply
          ( ) = footnote appears below second table

Platform              C   C         F90      F90       C++  Shared        zlib
                          parallel           parallel       libraries (4)
Solaris2.7 64-bit     y   y (1)     y        y (1)     y    y             y
Solaris2.7 32-bit     y   y (1)     y        y (1)     y    y             y
Solaris2.8 64-bit     y   y (1)     y        y (1)     y    y             y
Solaris2.8 32-bit     y   y         y        y (1)     y    y             y
IRIX6.5               y   y (1)     n        n         n    y             y 
IRIX64_6.5 64-bit     y   y (2)     y        y         y    y             y
IRIX64_6.5 32-bit     y   y (2)     n        n         n    y             y
HPUX11.00             y   y (1)     y        y         y    y             y
OSF1 v5.1             y   y         y        y         y    y             y
T3E                   y   y (5)     y        y (5)     n    n             y
SV1                   y   y (5)     y        y (5)     n    n             y
T90 IEEE              y   y (5)     y        y (5)     n    n             y
TFLOPS                n   y (1)     n        n         n    n             y
AIX-5.1 32-bit        y   y         y        y         y    n             y
AIX-5.1 64-bit        y   y         y        y         y    n             y
WinXP           (6)   y   n         n        n         y    y             y
WinXP Intel           y   n         n        n         y    y             y
Win2000               y   n         y        n         y    y             y
Win2000 Intel         y   n         y        n         y    y             y
WinNT CW              y   n         n        n         n    n             y
Mac OS X 10.2         y   n         n        n         y    y             y
FreeBSD               y   y (1)     n        n         y    y             y
Linux 2.4 gcc   (3)   y   y (1)     y (PGI)  n         y    y             y
Linux 2.4 Intel (3)   y   n         y        n         y    n             y
Linux 2.4 PGI   (3)   y   n         y        n         y    n             y
Linux 2.4 IA32 Intel  y   n         y        n         y    n             y
Linux 2.4 IA64 Intel  y   n         y        n         y    n             y


ASCII Table 2 -- for RELEASE.txt

Platform              static- Thread- SZIP GASS STREAM-  High-level  H4/H5 
                      exec    safe              VFD      APIs        tools (7)
Solaris2.7 64-bit     x       y       y    n    y        y           n
Solaris2.7 32-bit     x       y       y    n    y        y           y
Solaris2.8 64-bit     x       y       y    n    y        y           n
Solaris2.8 32-bit     x       y       y    n    y        y           y
IRIX6.5               x       n       y    n    y        y           y
IRIX64_6.5 64-bit     x       y       y    y    y        y           y
IRIX64_6.5 32-bit     x       y       y    y    y        y           y
HPUX11.00             x       n       y    n    y        y           y
OSF1 v5.1             y       n       y    n    y        y           y
T3E                   y       n       n    n    y        y           y
SV1                   y       n       n    n    y        y           y
T90 IEEE              y       n       n    n    y        y           n
TFLOPS                y       n       n    n    n        n           n
AIX-5.1 32-bit        y       n       y    n    y        y           y
AIX-5.1 64-bit        y       n       y    n    y        y           y
WinXP           (6)   y       n       y    n    n        y           y
WinXP Intel           y       n       y    n    n        y           y
Win2000               y       n       y    n    n        y           y
Win2000 Intel         y       n       y    n    n        y           y
WinNT CW              y       n       y    n    n        y           y
Mac OS X 10.2         y       n       y    n    y        y           n
FreeBSD               y       y       y    n    y        y           y
Linux 2.4 gcc   (3)   y       y       y    n    y        y           y
Linux 2.4 Intel (3)   y       n       y    n    y        n           n
Linux 2.4 PGI   (3)   y       n       y    n    y        n           n
Linux 2.4 IA32 Intel  y       n       y    n    y        y           y
Linux 2.4 IA64 Intel  y       n       y    n    y        y           y

    Notes: (1) Using mpich 1.2.4.
           (2) Using mpt and mpich 1.2.4.
           (3) Linux 2.4 with GNU, Intel, and PGI compilers, respectively.
           (4) Shared libraries are provided only for the C library, except 
               on Windows where they are provided for C and C++.
           (5) Using mpt.
           (6) Binaries only; source code for this platform is not being 
               released at this time.
           (7) Includes the H4toH5 Library and the h4toh5 and h5toh4 
               utilities.
    Compiler versions for each platform are listed in the preceding
    "Platforms Tested" table.



Known Problems
==============
* Fortran subroutine h5pget_driver_f doesn't return a correct driver information.
  The fix willl be available in the 1.6.2 release. 
* There are two h5dump xml tests(h5dump --xml thlink.h5 and h5dump --xml tmany.h5)
  failed on windows xp with .NET for debug and debug dll. Release and Release
  dll work fine. 

* The h5dump tests may fail to match the expected output on some platforms
  (e.g. parallel jobs, Windows) where the error messages directed to
  "stderr" do not appear in the "right order" with output from stdout.
  This is not an error.

* The stream-vfd test uses ip port 10007 for testing. If another
  application is already using that port address, the test will hang
  indefinitely and has to be terminated by the kill command. To try the
  test again, change the port address in test/stream_test.c to one not
  being used in the host.

* The --enable-static-exec configure flag fails to compile for Solaris
  platforms. This is due to the fact that not all of the system
  libraries on Solaris are available in a static format.

  The --enable-static-exec configure flag also fails to correctly compile
  on IBM SP2 platform for the serial mode. The parallel mode works fine
  with this option.
  
  It is suggested that you don't use this option on these platforms
  during configuration.

* With the gcc 2.95.2 compiler, HDF 5 uses the `-ansi' flag during
  compilation. The ANSI version of the compiler complains about not being
  able to handle the `long long' datatype with the warning:

        warning: ANSI C does not support `long long'
  
  This warning is innocuous and can be safely ignored.


* The Stream VFD was not tested yet under Windows. It is not supported
  in the TFLOPS machine.


* The ./dsets tests failed in the TFLOPS machine if the test program,
  dsets.c, is compiled with the -O option.  The hdf5 library still works
  correctly with the -O option.  The test program works fine if it is
  compiled with -O1 or -O0.  Only -O (same as -O2) causes the test
  program to fail.

* Certain platforms give false negatives when testing h5ls:
    - Cray J90 and Cray T90IEEE give errors during testing when displaying
      some floating-point values. These are benign differences due to
      the different precision in the values displayed and h5ls appears to
      be dumping floating-point numbers correctly.

* Before building HDF5 F90 Library from source on Crays 
  replace H5Aff.f90, H5Dff.f90 and H5Pff.f90 files in the fortran/src
  subdirectory in the top level directory with the Cray-specific files
  from the site:

* On some platforms that use Intel compilers to build HDF5 fortran library,
  compilation may fail for fortranlib_test.f90, fflush1.f90 and fflush2.f90
  complaining about exit subroutine. Comment out the line 
  IF (total_error .ne. 0) CALL exit (total_error)

  ftp://hdf.ncsa.uiuc.edu/pub/outgoing/hdf5/hdf5-1.6.0/F90_source_for_Crays

* On IA32 and IA64 systems, if you use a compiler other than GCC (such as
  Intel's ecc or icc compilers), you will need to modify the generated
  "libtool" program after configuration is finished. On or around line 104 of
  the libtool file, there are lines which look like:

      # How to pass a linker flag through the compiler.
      wl=""

  change these lines to this:

      # How to pass a linker flag through the compiler.
      wl="-Wl,"

  UPDATE: This is now done automatically by the configure script. However, if
  you still experience a problem, you may want to check this line in the
  libtool file and make sure that it has the correct value.

* Information about building with PGI and Intel compilers is available in
  INSTALL file sections 5.7 and 5.8
%%%%1.6.0%%%%   Release Information for hdf5-1.6.0 (03/July/03)

14.  Release information for HDF5 version 1.6.0
================================================


INTRODUCTION

This document describes the differences between HDF5-1.4.* and
HDF5-1.6.0, and contains information on the platforms tested and
known problems in HDF5-1.6.0. For more details check the HISTORY.txt
file in the HDF5 source.

The HDF5 documentation can be found on the NCSA ftp server
(ftp.ncsa.uiuc.edu) in the directory:

     /HDF/HDF5/docs/

For more information look at the HDF5 home page at:
   
    http://hdf.ncsa.uiuc.edu/HDF5/

If you have any questions or comments, please send them to:

    hdfhelp@ncsa.uiuc.edu

CONTENTS

- New Features
- Support for new platforms and languages
- Bug Fixes since HDF5-1.4.0
- Platforms Tested
- Known Problems


New Features
============

Configuration:
--------------
The following flags have been added to the configuration script:
--enable-hdf5v1_4       Compile the HDF5 v1.4 compatibility interface
--enable-filters=all    Turn on all internal I/O filters. One may also
                        specify a comma-separated list of filters or the
                        word no. The default is all internal I/O filters.
--with-mpe=DIR          Use MPE instrumentation [default=no]
--with-szlib=DIR        Use szlib library for external szlib I/O filter
                        [default=no]

Library:
--------
    Summary: This release has the following new features that are not
             available in 1.4.* releases

    1. Generic properties to give application more control on I/O pipeline
    2. Time allocation and fill value properties
    3. New  filters: external compression filter szip
                     internal shuffling and checksum filters
    4. Compact storage layout for datasets
    5. Redesigned I/O pipeline for better performance.

    For more information see
    http://hdf.ncsa.uiuc.edu/HDF5/doc_resource/SZIP/index.html
    http://hdf.ncsa.uiuc.edu/HDF5/doc/ADGuide.html
    http://hdf.ncsa.uiuc.edu/HDF5/doc/ADGuide/Changes.html 
    
    Complete list of changes:

    * Changed dataset modification time to _not_ be updated when raw data is
      written to a dataset.  The modification time is only updated when the
      dataset's metadata is modified.  QAK - 2003/06/10
    * Changed H5Sget_select_bounds to use 'hssize_t *' for start and end
      parameters, instead of 'hsize_t *', to better match other parts of the
      dataspace API.  QAK - 2003/06/04
    * Changed raw data I/O to only access each chunk once, improving performance
      in many situations with hyperslabs and large chunks or chunks with
      filters.  These improvements are currently limited to serial I/O, with
      similar parallel I/O improvements forthcoming sometime in the future.
      QAK - 2003/05/07
    * Added parameter to the MPI/POSIX driver. If GPFS is enabled (by
      modifying the H5FDmpiposix.c file to uncomment the USE_GPFS_HINTS
      macro), then this extra parameter will turn GPFS hints on and off
      during runtime. BW - 2003/05/05
    * Added option to print 1-byte integer datasets as ASCII to h5dump. BW -
      2003/04/30
    * Added a new utility "h5fc". It can be used to compile easily Fortran
      programs which use HDF5. It automatically uses the compiler the HDF5
      library was built with and links in any libraries HDF5 requires.
      BW - 2003/04/10
    * Added new dataset creation property list functions for working with
      I/O filters: H5Pmodify_filter, H5Pget_filter_by_id and
      H5Pall_filters_avail.  Also changed H5Zregister to use new method
      of registering filters with library.  QAK - 2003/04/08
    * The first version of szip compression support were implemented. 
      User should have static szlib library installed. Using function
      H5Pset_szip to pass the szip parameters to the HDF5 library.
      More detailed decription of the process will be followed.
      KY-2003/04/01
    * Added Fletcher32 checksum as a filter in pipeline.  It only works in 
      chunked dataset.  SLU - 2003/2/11
    * MPICH/MPE instrumentation feature added.  Use --with-mpe[=DIR] to configure
      it.  AKC - 2003/1/3
    * New functions H5Gget_num_objs, H5Gget_objname_by_idx and H5Gget_objtype_by_idx 
      are added to the library.  SLU - 2002/11/25
    * H5Dget_offset is added to return the offset of a dataset's data relative
      to the beginning of the file.  SLU - 2002/11/7
    * Functions H5Tget_native_type and H5Tis_variable_str are added.  The first
      one reconstructs a datatype based on native memory datatype.  The second
      one checks if a datatype is variable string.  SLU - 2002/11/6
    * Added environment variable "HDF5_DISABLE_VERSION_CHECK", which disables
      the version checking between the header files and the library linked into
      an application if set to '1'.  This should be used with caution, mis-
      matched headers and library binaries can cause _serious_ problems.
      QAK - 2002/10/15
    * Added new API function to get the name of an object in a file, using
      an open ID (hid_t).  QAK - 2002/10/14
    * Added API functions to return pointer to low-level file handle
      (H5Fget_vfd_handle and H5FDget_vfd_handle) and related property list
      setting functions(H5Pset_family_offset and H5Pset_multi_type).
      SLU - 2002/09/30
    * Changed "H5P[set|get]_space_time" functions to "H5P[set|get]_alloc_time"
      Unify all symbolic names for these functions to use "alloc time" instead
      of other names.  QAK - 2002/09/13
    * Added "H5D_SPACE_ALLOC_INCR" setting to H5D_SPACE_ALLOC_EARLY and
      H5D_SPACE_ALLOC_LATE for H5Dset_space_time().  This allows chunked
      datasets to be incrementally allocated as in the 1.4.x branch.
      QAK - 2002/08/27
    * Compact dataset is added to the library.  The data will be stored in 
      the header message of dataset layout.  Space allocation time has to be
      EARLY.  No hyperslab is supported for parallel collective write.  There
      is no API changes except activating H5Pset_layout and H5Pget_layout for
      compact dataset.  -SLU, 2002/8/20
    * Added 'closing' parameter to VFL 'flush' callback function and H5FDflush.
      This allows the library to indicate that the file will be closed
      immediately following the call to 'flush' and can be used to avoid actions
      that are duplicated in the VFL 'close' callback function.  QAK - 2002/05/20
    * Added feature to parallel chunk allocation routine to not write fill
      values to chunks allocated if the user has set the "fill time" to never.
      This can improve parallel I/O performance for chunked
      datasets.  QAK - 2002/05/17
    * New functions H5Glink2 and H5Gmove2 were added to allow link and move to
      be in different locations in the same file.  The old functions H5Glink 
      and H5Gmove remain valid.  SLU - 2002/04/26 
    * Fill-value's behaviors for contiguous dataset have been redefined.  
      Basicly, dataset won't allocate space until it's necessary.  Full details
      are available at http://hdf.ncsa.uiuc.edu/RFC/Fill_Value, at this moment.
      SLU - 2002/04/11
    * Added new routine "H5Dfill" to fill a selection with a particular value
      in memory.  QAK - 2002/04/09
    * Improved performance of "regular" hyperslab I/O when using MPI-IO and the
      datatype conversion is unneccessary.  QAK - 2002/04/02
    * Improved performance of single hyperslab I/O when datatype conversion is
      unneccessary.  QAK - 2002/04/02
    * Added new "H5Sget_select_type" API function to determine which type of
      selection is defined for a dataspace ("all", "none", "hyperslab" or
      "point"). QAK - 2002/02/07
    * Added support to read/write portions of chunks directly, if they are
      uncompressed and too large to cache.  This should speed up I/O on chunked
      datasets for a few more cases.  QAK - 2002/01/31
    * Added H5Rget_obj_type() API function, which performs the same functionality
      as H5Rget_object_type(), but requires the reference type as a parameter
      in order to correctly handle dataset region references.  Moved
      H5Rget_object_type() to be only compiled into the library when v1.4
      compatibility is enabled.
    * Added a new file access property, file close degree, to control file 
      close behavior.  It has four values, H5F_CLOSE_WEAK, H5F_CLOSE_SEMI,
      H5F_CLOSE_STRONG, and H5F_CLOSE_DEFAULT.  Two correspont functions 
      H5Pset_fclose_degree and H5Pget_fclose_degree are also provided.  Two 
      new functions H5Fget_obj_count and H5Fget_obj_ids are offerted to assist
      this new feature.  For full details, please refer to the reference 
      manual under the description of H5Fcreate, H5Fopen, H5Fclose and the 
      functions mentioned above. 
    * Removed H5P(get|set)_hyper_cache API function, since the property is no
      longer used.
    * Improved performance of non-contiguous hyperslabs (built up with
      several hyperslab selection calls).
    * Improved performance of single, contiguous hyperslabs when reading or
      writing.
    * As part of the transition to using generic properties everywhere, the
      parameter of H5Pcreate changed from H5P_class_t to hid_t, as well
      the return type of H5Pget_class changed from H5P_class_t to hid_t.
      Further changes are still necessary and will be documented here as they
      are made.
    * Improved regular hyperslab I/O by about a factor of 6 or so.
    * Modified the Pablo build procedure to permit building of the instrumented
      library to link either with the Trace libraries as before or with the
      Pablo Performance Caputure Facility.
    * Added new F90 APIs for generic properties, new filters, and
      time/space allocation properties.
    * C++ API:
        - Added two new member functions: Exception::getFuncName() and
          Exception::getCFuncName() to provide the name of the member
          function, where an exception is thrown.
        - IdComponent::operator= becomes a virtual function because
          DataType, DataSpace, and PropList provide their own
          implementation.  The new operator= functions invoke H5Tcopy,
          H5Scopy, and H5Pcopy to make a copy of a datatype, dataspace,
          and property list, respectively.

Parallel Library:
-----------------

Tools:
------
    * When the "-S" option for "simple" output is chosen, h5ls now displays
        modification times of datasets in UTC instead of local time.
        QAK - 2003/06/06
    * h5diff to compare two HDF5 files was added
    * h5import to import ascii and binary data to an HDF5 file was added.
      Old h5import tool in the tools/misc directory was renamed to 
      h5createU8 to reflect its purpose. h5createU8 will be deleted in 
      1.6.1 release. 
    * Two new scripts h5fc and h5c++ were added to compile F90 and C++
      HDF5 applications.

Support for new platforms, languages and compilers.
=======================================
    * Added C++ API support on HPUX11.00.  BMR - 2003/03/19
    * Absoft compiler is supported for Fortran HDF5 Library. 
      When building with Absoft compiler, add -DH5_ABSOFT to
      C compilation flags to get correct names of C functions
      called by Fortran APIs. 


Bug Fixes since HDF5-1.4.0 release
==================================

Library
-------
    * Don't attempt to perform collective I/O on chunked datasets with
      parallel I/O.  QAK - 2003/06/05
    * The library now correctly reuses space when objects are deleted in the
      file.  This should be handled correctly for every situation, except
      datasets with variable-length datatypes are not returning the space they
      use in the global heap currently. QAK - 2003/04/13
    * Fixed error in B-tree deletion routine which could cause groups to be
      corrupted when objects are removed from them.
      QAK - 2003/04/11
    * Fixed error in file space freeing code which could cause metadata to
      fail to be written to the file.
      QAK - 2003/04/11
    * -O caused errors in AIX 5.x platforms.  Removed it from
      --enable-production mode.  AKC - 2003/03/31
    * Corrected memory/resource leaks in per-thread key information when
      thread-safe operation was enabled.  QAK - 2003/02/07
    * Improved error assertion for nil VL strings, making it fails with error
      stack instead of just assertion failure.  SLU - 2002/12/16
    * Added two new API functions: H5Zunregister & H5Zfilter_avail.
      QAK - 2002/11/16
    * Add data shuffle filter(source code H5Zshuffle.c), the combination of the
      shuffling and compression can make data compression better without suffering
      much encoding and decoding CPU time for many application datasets(especially
      for floating point data). This adds a new API function: H5Pset_shuffle.
      KY - 2002/11/13
    * Allow scalar dataspaces to be used for parallel I/O.  QAK - 2002/11/05
    * New functions H5Gget_comment(modification), H5Aget_storage_size, 
      H5Arename.  SLU - 2002/10/29
    * Fixed an assertion of H5S_select_iterate that did not account for scalar
      type that has no dimension sizes.   AKC - 2002/10/15
    * Partially fixed space allocation inefficiencies in the file by
      improving our algorithms for re-using freed space.  QAK - 2002/08/27
    * Fixed data corruption problem which could occur when fill values were
      written to a contiguously stored dataset in parallel.  QAK - 2002/08/27
    * Fixed VL memory leak when data is overwritten.  The heap objects holding
      old data are freed.  If the fill value writting time is set to 
      H5D_FILL_TIME_NEVER, the library prohibits user to create VL type dataset.
      The library free all the heap objects storing VL type if there is nested 
      VL type(a VL type contains another VL type).  SLU - 2002/07/10 
    * Tweaked a few API functions to use 'size_t' instead of 'unsigned' or
      'hsize_t', which may cause errors in some cases.


Configuration
-------------
    * Included the both the examples of fortran and c++ "make check-install"
      testing. This tests the correctness of the h5fc command. AKC - 2003/04/22
    * When using gcc 3.x, we use -std=c99 instead of -ansi for compiling.
      QAK - 2003/04/11
    * IA64 platform has its own configure setting and use Intel Compilers as
      the default compilers (were gcc and pgf90 before.)  This also eliminated
      the segmentation fault in the fortran test.  The missing reference of
      "exit" is fixed too.  AKC - 2003/04/02

Performance
-------------
    * Improved dataset creation time by about 30% (relative to the 1.4.x
      branch).

Tools
-----

    * Added a -force option to h5redeploy.  AKC - 2003/03/04 
    * The VL string bug(data and datatype cannot be shown) in h5dump is fixed.
      -SLU - 2002/11/18
    * Fixed segfault if h5dump was invoked with some options but no file 
      (e.g., h5dump -H). -AKC, 2002/10/15
    * Fixed so that the "-i" flag works correctly with the h5dumper.
    * Fixed segfault when "-v" flag was used with the h5dumper.


Documentation 
------------- 






Platforms Tested
================

    AIX 5.1  (32 and 64-bit)      xlc 6.0.0.2
                                  xlf 8.1.0.3
    				  xlC 6.0.0.4
				  xlc 5.0.2.5
				  xlf 7.1.1.2
				  xlC 5.0.2.5
				  mpcc_r 5.0.2.5
				  mpxlf_r 7.1.1.2
                                  poe 3.2.0.10
    Cray T3E sn6606 2.0.6.08      Cray Standard C Version 6.6.0.2
                                  Cray Fortran Version 3.6.0.0.2
                                  mpt 2.2.0.0
    Cray SV1 sn9617 10.0.1.2      Cray Standard C Version 6.6.0.2
                                  mpt 2.2.0.0
                                  Cray Fortran Version 3.6.0.0.2
    Cray T90IEEE 10.0.1.01y       Cray Standard C Version 6.4.0.2.3
                                  Cray Fortran Version 3.4.0.3
                                  mpt 2.1.0.0
    FreeBSD 4.7                   gcc 2.95.4
                                  g++ 2.95.5
    HP-UX B.11.00                 HP C  HP92453-01 A.11.01.20 
                                  HP F90 v2.4
                                  HP ANSI C++ B3910B A.03.13
                                  MPIch 1.2.4
    IRIX 6.5                      MIPSpro cc 7.30
    IRIX64 6.5 (64 & n32)         MIPSpro cc 7.3.1.3m
                                  F90 MIPSpro 7.3.1.3m (64 only)
                                  MPIch 1.2.4
    Linux 2.4.18                  gcc 2.96, 3.2.2, 3.2.3
                                  g++ 3.2.2, 3.2.3
                                  Intel(R) C++ Version 7.1
                                  Intel(R) Fortran Compiler Version 7.1
                                  PGI compilers (pgcc, pgf90, pgCC) version 4.0-2
                                  MPIch 1.2.4
    OSF1 V5.1                     Compaq C V6.4-014
                                  Compaq C V6.3-027
				  Compaq Fortran V5.5-1877
				  Compaq C++ V6.5-014
				  MPI_64bit_R5
                                  g++ version 3.0 for C++
    SunOS 5.7                     WorkShop Compilers 5.0 98/12/15 C 5.0
     (Solaris 2.7)                WorkShop Compilers 5.0 98/12/15 C++ 5.0 
                                  WorkShop Compilers 5.0 98/10/25 
                                  FORTRAN 90 2.0 Patch 107356-04 
    SunOS 5.8/32                  Sun WorkShop 6 update 2 C 5.3
     (Solaris 2.8)                Sun WorkShop 6 update 2 Fortran 90
                                  Sun WorkShop 6 update 2 C++ 5.3
    SunOS 5.8/64                  Sun WorkShop 6 update 2 C 5.3
     (Solaris 2.8)                Sun WorkShop 6 update 2 Fortran 90
                                  Sun WorkShop 6 update 2 C++ 5.3
    TFLOPS r1.0.4 v4.3.3 i386     pgcc Rel 3.1-4i with mpich-1.2.4 with
                                          local modifications
    IA-32 Linux 2.4.9             gcc 2.96
                                  Intel(R) C++ Version 7.0
                                  Intel(R) Fortran Compiler Version 7.0
                                  
    IA-64 Linux 2.4.16 ia64       gcc version 2.96 20000731
                                  Intel(R) C++ Version 7.0
                                  Intel(R) Fortran Compiler Version 7.0
    Windows 2000 (NT5.0)          MSVC++ 6.0
                                  DEC Visual Fortran 6.0
                                  Intel C and F90 compilers version 7.1
				  Code Warrior 8.0
    Windows XP                    MSVC++.NET
    MAC OS X                      Darwin 6.5
                                  gcc and g++ Apple Computer, Inc. GCC 
                                  version 1161, based on gcc version 3.1
                                  


Supported Configuration Features Summary
========================================

    In the tables below
          y   = tested and supported
          n   = not supported or not tested in this release
          x   = not working in this release
          dna = does not apply
          ( ) = footnote appears below second table

Platform              C   C         F90      F90       C++  Shared        zlib
                          parallel           parallel       libraries (4)
Solaris2.7 64-bit     y   y (1)     y        y (1)     y    y             y
Solaris2.7 32-bit     y   y (1)     y        y (1)     y    y             y
Solaris2.8 64-bit     y   y (1)     y        y (1)     y    y             y
Solaris2.8 32-bit     y   y         y        y (1)     y    y             y
IRIX6.5               y   y (1)     n        n         n    y             y 
IRIX64_6.5 64-bit     y   y (2)     y        y         y    y             y
IRIX64_6.5 32-bit     y   y (2)     n        n         n    y             y
HPUX11.00             y   y (1)     y        y         y    y             y
OSF1 v5.1             y   y         y        y         y    y             y
T3E                   y   y (5)     y        y (5)     n    n             y
SV1                   y   y (5)     y        y (5)     n    n             y
T90 IEEE              y   y (5)     y        y (5)     n    n             y
TFLOPS                n   y (1)     n        n         n    n             y
AIX-5.1 32-bit        y   y         y        y         y    n             y
AIX-5.1 64-bit        y   y         y        y         y    n             y
WinXP           (6)   y   n         n        n         y    y             y
WinXP Intel           y   n         n        n         y    y             y
Win2000               y   n         y        n         y    y             y
Win2000 Intel         y   n         y        n         y    y             y
WinNT CW              y   n         n        n         n    n             y
Mac OS X 10.2         y   n         n        n         y    y             y
FreeBSD               y   y (1)     n        n         y    y             y
Linux 2.4 gcc   (3)   y   y (1)     y (PGI)  n         y    y             y
Linux 2.4 Intel (3)   y   n         y        n         y    n             y
Linux 2.4 PGI   (3)   y   n         y        n         y    n             y
Linux 2.4 IA32 Intel  y   n         y        n         y    n             y
Linux 2.4 IA64 Intel  y   n         y        n         y    n             y


ASCII Table 2 -- for RELEASE.txt

Platform              static- Thread- SZIP GASS STREAM-  High-level  H4/H5 
                      exec    safe              VFD      APIs        tools (7)
Solaris2.7 64-bit     x       y       y    n    y        y           n
Solaris2.7 32-bit     x       y       y    n    y        y           y
Solaris2.8 64-bit     x       y       y    n    y        y           n
Solaris2.8 32-bit     x       y       y    n    y        y           y
IRIX6.5               x       n       y    n    y        y           y
IRIX64_6.5 64-bit     x       y       y    y    y        y           y
IRIX64_6.5 32-bit     x       y       y    y    y        y           y
HPUX11.00             x       n       y    n    y        y           y
OSF1 v5.1             y       n       y    n    y        y           y
T3E                   y       n       n    n    y        y           y
SV1                   y       n       n    n    y        y           y
T90 IEEE              y       n       n    n    y        y           n
TFLOPS                y       n       n    n    n        n           n
AIX-5.1 32-bit        y       n       y    n    y        y           y
AIX-5.1 64-bit        y       n       y    n    y        y           y
WinXP           (6)   y       n       y    n    n        y           y
WinXP Intel           y       n       y    n    n        y           y
Win2000               y       n       y    n    n        y           y
Win2000 Intel         y       n       y    n    n        y           y
WinNT CW              y       n       y    n    n        y           y
Mac OS X 10.2         y       n       y    n    y        y           n
FreeBSD               y       y       y    n    y        y           y
Linux 2.4 gcc   (3)   y       y       y    n    y        y           y
Linux 2.4 Intel (3)   y       n       y    n    y        n           n
Linux 2.4 PGI   (3)   y       n       y    n    y        n           n
Linux 2.4 IA32 Intel  y       n       y    n    y        y           y
Linux 2.4 IA64 Intel  y       n       y    n    y        y           y

    Notes: (1) Using mpich 1.2.4.
           (2) Using mpt and mpich 1.2.4.
           (3) Linux 2.4 with GNU, Intel, and PGI compilers, respectively.
           (4) Shared libraries are provided only for the C library, except 
               on Windows where they are provided for C and C++.
           (5) Using mpt.
           (6) Binaries only; source code for this platform is not being 
               released at this time.
           (7) Includes the H4toH5 Library and the h4toh5 and h5toh4 
               utilities.
    Compiler versions for each platform are listed in the preceding
    "Platforms Tested" table.



Known Problems
==============

* PGI C++ compiler fails when compiling the C++ library's tests.
  Therefore, we cannot verify that the C++ library built with the PGI C++
  compiler is correct.

* The h5dump tests may fail to match the expected output on some platforms
  (e.g. parallel jobs, Windows) where the error messages directed to
  "stderr" do not appear in the "right order" with output from stdout.
  This is not an error.

* The stream-vfd test uses ip port 10007 for testing. If another
  application is already using that port address, the test will hang
  indefinitely and has to be terminated by the kill command. To try the
  test again, change the port address in test/stream_test.c to one not
  being used in the host.

* The --enable-static-exec configure flag fails to compile for Solaris
  platforms. This is due to the fact that not all of the system
  libraries on Solaris are available in a static format.

  The --enable-static-exec configure flag also fails to correctly compile
  on IBM SP2 platform for the serial mode. The parallel mode works fine
  with this option.
  
  It is suggested that you don't use this option on these platforms
  during configuration.

* With the gcc 2.95.2 compiler, HDF 5 uses the `-ansi' flag during
  compilation. The ANSI version of the compiler complains about not being
  able to handle the `long long' datatype with the warning:

        warning: ANSI C does not support `long long'
  
  This warning is innocuous and can be safely ignored.


* The Stream VFD was not tested yet under Windows. It is not supported
  in the TFLOPS machine.


* The ./dsets tests failed in the TFLOPS machine if the test program,
  dsets.c, is compiled with the -O option.  The hdf5 library still works
  correctly with the -O option.  The test program works fine if it is
  compiled with -O1 or -O0.  Only -O (same as -O2) causes the test
  program to fail.

* Certain platforms give false negatives when testing h5ls:
    - Cray J90 and Cray T90IEEE give errors during testing when displaying
      some floating-point values. These are benign differences due to
      the different precision in the values displayed and h5ls appears to
      be dumping floating-point numbers correctly.

* Before building HDF5 F90 Library from source on Crays 
  replace H5Aff.f90, H5Dff.f90 and H5Pff.f90 files in the fortran/src
  subdirectory in the top level directory with the Cray-specific files
  from the site:

* On some platforms that use Intel compilers to build HDF5 fortran library,
  compilation may fail for fortranlib_test.f90, fflush1.f90 and fflush2.f90
  complaining about exit subroutine. Comment out the line 
  IF (total_error .ne. 0) CALL exit (total_error)

  ftp://hdf.ncsa.uiuc.edu/pub/outgoing/hdf5/hdf5-1.6.0/F90_source_for_Crays

* On IA32 and IA64 systems, if you use a compiler other than GCC (such as
  Intel's ecc or icc compilers), you will need to modify the generated
  "libtool" program after configuration is finished. On or around line 104 of
  the libtool file, there are lines which look like:

      # How to pass a linker flag through the compiler.
      wl=""

  change these lines to this:

      # How to pass a linker flag through the compiler.
      wl="-Wl,"

  UPDATE: This is now done automatically by the configure script. However, if
  you still experience a problem, you may want to check this line in the
  libtool file and make sure that it has the correct value.

* Information about building with PGI and Intel compilers is available in
  INSTALL file sections 5.7 and 5.8
-----------------------------------------------------------------------
%%%%1.4.5%%%%   Release Information for hdf5-1.4.5 (02/February/03)


13.   Release information for HDF5 version 1.4.5
==============================================================================


INTRODUCTION

This document describes the differences between HDF5-1.4.4 and
HDF5-1.4.5, and contains information on the platforms tested and
known problems in HDF5-1.4.5. For additional information check the 
HISTORY.txt file in the HDF5 source.

The HDF5 documentation can be found on the NCSA ftp server
(ftp.ncsa.uiuc.edu) in the directory:

    /HDF/HDF5/docs/

For more information, see the HDF5 home page at:
   
    http://hdf.ncsa.uiuc.edu/HDF5/

If you have any questions or comments, please send them to:

    hdfhelp@ncsa.uiuc.edu


CONTENTS

- New Features
- Bug Fixes since HDF5-1.4.4
- Performance Improvements
- Documentation
- Platforms Tested
- Supported Configuration Features
- Known Problems


New Features
============
  o Configuration
  ================
    * Added "unofficial support" for building with a C++ compiler (or at least
      not failing badly when building with a C++ compiler).  QAK - 2003/01/09
    * Added "unofficial support" for AIX 64bits.  See INSTALL for configure
      details. AKC - 2002/08/29
    * Added "--with-dmalloc" flag, to easily enable support for the 'dmalloc'
      debugging malloc implementation. QAK - 2002/07/15

  o Library
  =========
    o General
    --------- 
      * Allow scalar dataspaces to be used for parallel I/O.  QAK - 2002/11/05
      * Added environment variable "HDF5_DISABLE_VERSION_CHECK", which disables
        the version checking between the header files and the library linked
        into an application if set to '1'.  This should be used with caution,
        mis-matched headers and library binaries can cause _serious_ problems.
        QAK - 2002/10/15
      * Partially fixed space allocation inefficiencies in the file by
        improving our algorithms for re-using freed space.  QAK - 2002/08/27
      * API tracing has been improved. Nested API calls don't screw up the
        output format; function call and return event times can be logged;
        total time spent in each function can be logged.  The following
        HDF5_DEBUG environment variable words affect tracing:
	    trace   -- turn on/off basic tracing
	    ttimes  -- turn on tracing and report event times and
                       time spent in each API function.
        ttop    -- turn on tracing but display only top-level
                       API calls.

    o APIs
    ------
      * Several missing fortran APIs have been added to the library:

        h5get_libversion_f        h5tget_member_index_f  h5dget_storage_size_f 
        h5check_version_f         h5tvlen_create_f       h5dvlen_get_max_len_f
        h5garbage_collect_f                              h5dwrite_vl_f
        h5dont_atexit_f                                  h5dread_vl_f

      Functions h5dvlen_get_max_len_f, h5dwrite_vl_f, and h5dread_vl_f support
      VL Length C APIs functionality for integer, real and string datatypes.
      See HDF5 Reference Manual and HDF5 FORTRAN90 User's Notes for more
      information and for the functions description.

  o Parallel library
  ==================
    * The MPI-posix virtual file driver makes gpfs_fcntl() hints to tell
        the underlying GPFS file system to avoid prefetching byte range
        tokens if USE_GPFS_HINTS is defined when this file is compiled.
        This temporary solution is intended to be removed once the HDF5
        API supports the necessary functionality that makes it possible
        for this sort of thing do be done at a higher software layer.
        RPM - 2002/12/03
    * Added MPI-posix VFL driver.  This VFL driver uses MPI functions to
        coordinate actions, but performs I/O directly with POSIX sec(2)
        (i.e. open/close/read/write/etc.) calls.  This driver should _NOT_
        be used to access files that are not on a parallel filesystem.
        The following API functions were added:
            herr_t H5Pset_fapl_mpiposix(hid_t fapl_id, MPI_Comm comm);
            herr_t H5Pget_fapl_mpiposix(hid_t fapl_id, MPI_Comm *comm/*out*/);
        QAK - 2002/07/15



  o Support for new platforms and languages
  =========================================
    * C++ API now works on the Origin2000 (IRIX6.5.14.)  BMR - 2002/11/14

  
  o Misc.
  =========================================
    HDF5 1.4.5 works with Portland Group Compilers (pgcc, pgf90 and pgCC 
    version 4.0-2) on Linux 2.4 


Bug Fixes since HDF5-1.4.4 Release
==================================
    * H5Fopen without the H5F_ACC_CREAT flag should not succeed in creating
        a new file with the 'core' VFL driver.  QAK - 2003/01/24
    * Corrected metadata caching bug in parallel I/O which could cause hangs
        when chunked datasets were accessed with independent transfer mode.
        QAK - 2003/01/23
    * Allow opening objects with unknown object header messages.
        QAK - 2003/01/21
    * Added improved error assertion for nil VL strings.  It return error
        stack instead of a simple assertion.  SLU - 2002/12/16
    * Fixed h5dump bug(cannot dump data and datatype) for VL string. 
        SLU - 2002/11/18 
    * Fixed error condition where "none" selections were not being handled
        correctly in serial & parallel.  QAK - 2002/10/29
    * Fixed problem where optimized hyperslab routines were incorrectly
        invoked for parallel I/O operations in collective mode.  QAK - 2002/07/22
    * Fixed metadata corruption problem which could occur when many objects
        are created in a file during parallel I/O.  QAK - 2002/07/19
    * Fixed minor problem with configuration when users specified /usr/include
        and /usr/lib for the --with-* options that some compilers can't
        handle. BW - 2003/01/23



Documentation
=============
    New PDF files are not available for this release.


Platforms Tested
================

    AIX 5.1  (32 and 64-bit)      C for AIX Compiler, Version 6
                                  xlf 8.1.0.2
                                  poe 3.2.0.11
    Cray T3E sn6606 2.0.6.08      Cray Standard C Version 6.6.0.1.3 
                                  Cray Fortran Version 3.6.0.0.12 
    Cray SV1 10.0.1. 0            Cray Standard C Version 6.6.0.1.3
                                  Cray Fortran Version 3.6.0.0.12
    Cray T90IEEE 10.0.1.01u       Cray Standard C Version 6.4.0.2.3
                                  Cray Fortran Version 3.4.0.3
    FreeBSD 4.7                   gcc 2.95.4
                                  g++ 2.95.5
    HP-UX B.11.00                 HP C  HP92453-01 A.11.01.20 
                                  HP F90 v2.4
    IRIX 6.5                      MIPSpro cc 7.30
    IRIX64 6.5 (64 & n32)         MIPSpro cc 7.3.1.3m
                                  F90 MIPSpro 7.3.1.3m (64 only)
    Linux 2.4.18                  gcc 3.2.1
                                  g++ 3.2.1
                                  Intel(R) C++ Version 6.0
                                  Intel(R) Fortran Compiler Version 6.0
                                  PGI compilers (pgcc, pgf90, pgCC) version 4.0-2
                                  pgf90  3.2-4
    OSF1 V5.1                     Compaq C V6.4-014
                                  Compaq Fortran X5.4A-1684
                                  gcc version 3.0 for C++
    SunOS 5.7                     WorkShop Compilers 5.0 98/12/15 C 5.0
     (Solaris 2.7)                WorkShop Compilers 5.0 98/12/15 C++ 5.0 
                                  WorkShop Compilers 5.0 98/10/25 
                                  FORTRAN 90 2.0 Patch 107356-04 
    SunOS 5.8/32                  Sun WorkShop 6 update 1 C 5.2 2000/09/11
     (Solaris 2.8)                Sun WorkShop 6 update 1 Fortran 95 6.1 
                                          Patch 109503-07 2001/08/11
                                  Sun WorkShop 6 update 1 C++ 5.2 Patch
                                        109508-04 2001/07/11
    SunOS 5.8/64                  Sun WorkShop 6 update 1 C 5.2 2000/09/11
     (Solaris 2.8)                Sun WorkShop 6 update 1 Fortran 95 6.1 
                                          Patch 109503-07 2001/08/11
                                  Sun WorkShop 6 update 1 C++ 5.2 Patch
                                        109508-04 2001/07/11
    TFLOPS r1.0.4 v4.3.3 i386     pgcc Rel 3.1-4i with mpich-1.2.4 with
                                          local modifications
    IA-32 Linux 2.4.9             gcc 2.96
                                  Intel(R) C++ Version 7.0
                                  Intel(R) Fortran Compiler Version 7.0
                                  
    IA-64 Linux 2.4.16 ia64       gcc version 2.96 20000731
                                  Intel(R) C++ Version 7.0
                                  Intel(R) Fortran Compiler Version 7.0
    Windows 2000 (NT5.0)          MSVC++ 6.0
                                  DEC Visual Fortran 6.0
    Windows XP                    .NET
    Windows NT4.0                 Code Warrior 6.0
    MAC OS X                      Darwin 6.2
                                  gcc and g++ Apple Computer, Inc. GCC 
                                  version 1161, based on gcc version 3.1
                                  


Supported Configuration Features Summary
========================================

    In the tables below
          y   = tested and supported
          n   = not supported or not tested in this release
          x   = not working in this release
          dna = does not apply
          ( ) = footnote appears below second table


    Platform             C   C         F90  F90       C++  Shared         zlib
                             parallel       parallel       libraries (5)
    Solaris2.6           y   n         y    n         y    y              y
    Solaris2.7 64-bit    y   y (1)     y    y (1)     y    y              y
    Solaris2.7 32-bit    y   y (1)     y    y (1)     y    y              y
    Solaris2.8 64-bit    y   n         y    y (1)     y    y              y
    Solaris2.8 32-bit    y   n         y    y (1)     y    y              y
    IRIX6.5              y   y (1)     n    n         n    y              y 
    IRIX64_6.5 64-bit    y   y (2)     y    y         y    y              y
    IRIX64_6.5 32-bit    y   y (2)     n    n         n    y              y
    HPUX11.00            y   y (1)     y    n         n    y              y
    OSF1 v5.1            y   n         y    n         y    y              y
    T3E             (6)  y   n         y    n         n    n              y
    SV1                  y   n         y    n         n    n              y
    T90 IEEE             y   n         y    n         n    n              y
    TFLOPS               n   y (1)     n    n         n    n              y
    AIX-5.1 32-bit       y   y         y    y         y    n              y
    AIX-5.1 64-bit       y   y         y    y         y    n              y
    WinXP           (7)  y   n         n    n         y    y              y
    WinNT/2000           y   n         y    n         y    y              y
    WinNT CW             y   n         n    n         n    n              y
    Mac OS X 10.2        y   n         n    n         y    y              y
    FreeBSD              y   y (1)     n    n         y    y              y
    Linux 2.2            y   y (1)     y    y (1)     y    y              y
    Linux 2.4 gcc   (3)  y   y (1)     y    n         y    y              y
    Linux 2.4 Intel (3)  y   n         y    n         n    n              y
    Linux 2.4 PGI   (3)  y   n         y    n         y    n              y
    Linux 2.4 IA32       y   n         y    n         n    n              y
    Linux 2.4 IA64       y   n         y    n         n    n              y
    

    Platform             static-  Thread-  SRB  GASS  STREAM-
                         exec     safe                VFD
    Solaris2.6           x        y        n    n     y
    Solaris2.7 64-bit    x        y        n    n     y
    Solaris2.7 32-bit    x        y        n    n     y
    Solaris2.8 64-bit    x        n        n    n     y
    Solaris2.8 32-bit    x        y        n    n     y
    IRIX6.5              x        n        n    n     y
    IRIX64_6.5 64-bit    x        y        n    y     y
    IRIX64_6.5 32-bit    x        y        n    y     y
    HPUX11.00            x        n        n    n     y
    OSF1 v5.1            y        n        n    n     y
    T3E             (6)  y        n        n    n     y
    SV1                  y        n        n    n     y
    T90 IEEE             y        n        n    n     y
    TFLOPS               y        n        n    n     n
    AIX-5.1 32-bit       y        n        n    n     y
    AIX-5.1 64-bit       y        n        n    n     y
    WinXP           (7)  dna      n        n    n     n
    WinNT/2000           dna      n        n    n     n
    WinNT CW             dna      n        n    n     n
    Mac OS X 10.2        y        n        n    n     y
    FreeBSD              y        y        n    n     y
    Linux 2.2            y        y        n    n     y
    Linux 2.4 gcc   (3)  y        y        n    n     y
    Linux 2.4 Intel (3)  y        n        n    n     y
    Linux 2.4 PGI   (3)  y        n        n    n     y
    Linux 2.4 IA32       y        n        n    n     y
    Linux 2.4 IA64       y        n        n    n     y

    Notes: (1) Using mpich 1.2.4.
           (2) Using mpt and mpich 1.2.4.
           (3) Linux 2.4 with GNU, Intel, and PGI compilers.
           (4) No HDF4-related tools.
           (5) Shared libraries are provided only for the C library, 
               except on Windows where they are provided for all languages.
           (6) Debug mode only.
           (7) Binaries only; source code for this platform is not being 
               released at this time.


Known Problems
==============

    * On Linux 2.4 IA64, Fortran test fails for h5dwrite_vl_f 
      for integer and real base datatypes.

    * When fortran library is built with Intel compilers, compilation
      for fflush1.f90, fflush2.f90 and fortanlib_test.f90 will fail 
      complaining about EXEC function. Comment the call to EXEC subroutine
      in each program, or get a patch for the HDF5 Fortran source code. 

    * Fortran external dataset test fails on Linux 2.4 with pgf90 compiler.

    * On Windows, h5dump may abort printing if a VL string is longer than 4096
      bytes due to a compiler problem.  It'll be fixed in v1.6 release.

    * Datasets or attributes which have a variable-length string datatype are
      not printing correctly with h5dump and h5ls.

    * When a dataset with the variable-length datatype is overwritten, 
      the library can develop memory leaks that cause the file to become 
      unnecessarily large.  This is planned to be fixed in the next release.

    * On the SV1, the h5ls test fails due to a difference between the 
      SV1 printf precision and the printf precision on other platforms.

    * The h5dump tests may fail to match the expected output on some
      platforms (e.g. SP2 parallel, Windows) where the error messages
      directed to "stderr" do not appear in the "right order" with output
      from stdout.  This is not an error.

    * The --enable-static-exec configure flag fails to compile for HP-UX
      11.00 platforms.

    * The executables are always dynamic on IRIX64 6.5(64 and n32) and 
      IRIX 6.5 even if they are configured with --enable-static-exec.

    * IRIX 6.5 fails to compile if configured with --enable-static-exec.

    * The executables are always dynamic on Solaris 2.7 ans 2.8(64 and n32)
      even if they are configured with --enable-static-exec.
    
    * The HDF5_MPI_OPT_TYPES optimization code in the parallel HDF5 will cause
      a hang in some cases when chunked storage is used.  This is now set to
      be off by default.  One may turn it on by setting the environment 
      variable HDF5_MPI_OPT_TYPES to a non-zero value such as 1.

    * On OSF1 v5.1 and IA32 h5dumpgentst program that generates test files
      for h5dump, gives segmentation fault.

    * On Windows platforms, C and Fortran tests fail with the debug DLL version
      of the Library if built from all_withf90.zip file.

    * On Cray T3E (sn6606 2.0.6.08 unicosmk CRAY T3E) with Cray Standard C Version 6.6.0.1.3
      compiler optimization causes errors in many HDF5 Library tests. Use -g -h zero flags
      to build HDF5 Library. 

    * On Cray SV1 10.0.1. 0 datatype convertion test fails. Please check HDF FTP site
      if patch is available. We will try to provide one in the nearest future. 

    * For configuration, building and testing with Intel and PGI compilers see
      corresponding section in INSTALL file.


%%%%1.4.4%%%%   Release Information for hdf5-1.4.4 (02/July/02)

12.   Release information for HDF5 version 1.4.4
==============================================================================

INTRODUCTION

This document describes the differences between HDF5-1.4.3 and
HDF5-1.4.4, and contains information on the platforms tested and
known problems in HDF5-1.4.4. For more details check the HISTORY.txt
file in the HDF5 source.

The HDF5 documentation can be found on the NCSA ftp server
(ftp.ncsa.uiuc.edu) in the directory:

    /HDF/HDF5/docs/

For more information, see the HDF5 home page at:
   
    http://hdf.ncsa.uiuc.edu/HDF5/

If you have any questions or comments, please send them to:

    hdfhelp@ncsa.uiuc.edu


CONTENTS

- New Features
- Bug Fixes since HDF5-1.4.3
- Performance Improvements
- Documentation
- Platforms Tested
- Supported Configuration Features
- Known Problems


New Features
============
  o Configuration
  ================
    * The H4 to H5 tools have been removed from the main source and placed 
      in a separate package. You can get these tools from the HDF ftp site
      (ftp://hdf.ncsa.uiuc.edu/). The "--with-hdf4" command-line option 
      during configure is no longer valid.  BW - 2002/06/25

  o Library
  =========
    o General
    --------- 
      * Fill-value forward-compatibility with release 1.5 was added.  SLU -
        2002/04/11
      * A new query function H5Tget_member_index has been added for compound
        and enumeration data types.  This function retrieves a member's index 
        by name.  SLU - 2002/04/05
      * Added serial multi-gigabyte file size test.  "test/big -h" shows
        the help page.  AKC - 2002/03/29
 
    o APIs
    ------
      * The F90 subroutines h5dwrite_f, h5dread_f, h5awrite_f, and h5aread_f 
        were overloaded with a "dims" argument of type INTEGER(HSIZE_T) to 
        specify the size of the array.  We recommend using these subroutines 
        with the new type; module subroutines that accept "dims" as an i
        INTEGER array of size 7 will be deprecated in release 1.6.  
        EIP - 2002/05/06
 
    o Performance
    -------------
      * Added internal "small data" aggregation, which can reduce the number of
        actual I/O calls made, improving performance.  QAK - 2002/06/05
      * Improved internal metadata aggregation, which can reduce the number of
        actual I/O calls made, improving performance.  Additionally, this can
        reduce the size of files produced.  QAK - 2002/06/04
      * Improved internal metadata caching, which can reduce the number of
        actual I/O calls made by a substantial amount, improving
        performance.  QAK - 2002/06/03


  o Parallel library
  ==================
    * Fixed bug in parallel I/O routines where a collective I/O which used
      MPI derived types, followed by an independent I/O would cause the library
      to hang.  QAK 2002/06/24
    * Added environment variable flag to control whether creating MPI derived
      types is preferred or not.  This can affect performance, depending on
      which way the MPI-I/O library is optimized.  The default is set to
      prefer MPI derived types for collective raw data transfers; setting the
      HDF5_MPI_PREFER_DERIVED_TYPES environment variable to "0" (i.e.:
      "setenv HDF5_MPI_PREFER_DERIVED_TYPES 0") changes the preference to avoid
      using them whenever possible.  QAK - 2002/06/19
    * Changed MPI I/O routines to avoid creating MPI derived types (and thus
      needing to set the file view) for contiguous selections within datasets.
      This should result in some performance improvement for those types of
      selections.  QAK - 2002/06/18
    * Changed MPI type support for collective I/O to be enabled by default.
      This can be disabled by setting the HDF5_MPI_OPT_TYPES environment
      variable to the value "0".  QAK - 2002/06/14
    * Allowed chunks in chunked datasets to be cached when parallel file is
      opened for read-only access (bug #709).  QAK - 2002/06/10
    * Changed method for allocating chunked dataset blocks to only allocate
      blocks that don't already exist, instead of attempting to create all the
      blocks all the time.  This improves performance for chunked
      datasets.  QAK - 2002/05/17
    * Allowed the call to MPI_File_sync to be avoided when the file is going to
      immediately be closed, improving performance.  QAK - 2002/05/13
    * Allowed the metadata writes to be shared among all processes, easing the
      burden on process 0.  QAK - 2002/05/10


  o Tools
  =======
    * h5redeploy utility was added. It updates HDF5 compiler tools
      after the HDF5 software has been installed in a new location.


  o Support for new platforms and languages
  =========================================
    * Parallel Fortran Library works now on HP-UX B.11.00 Sys V.
      EIP - 2002/05/06
    * Intel C++ and F90 compilers Version 6.0 are supported on Linux 2.4.
    * Intel C++ compilers Version 6.0 are supported on Windows 2000.

  
  o Misc.
  =========================================
   * zlib has been moved out of the Windows source release. Users should go to
     the ZLIB homepage(http://www.zlib.org) to download the corresponding 
     zlib library.
   * The Windows binary release is built with the old version of the zlib 
     library.  We expect users to use zlib 1.1.4 to build with the source 
     release.  
   * In the Windows-specific install document, we specify how to test backward
     compatibility. However, in this release, we are not testing the backward
     compatibility of HDF5.


Bug Fixes since HDF5-1.4.3 Release
==================================
    * Fixed bug in chunking routines where they were using internal allocation
        free routines, instead of malloc/free, preventing user filters from
        working correctly.  Chunks are now allocated/freed with malloc/free and
        so should the chunks in user filters.  QAK 2002/06/18
    * Fixed bug where regular hyperslab selection could get incorrectly
        transferred when the number of elements in a row did not fit evenly
        into the buffer provided.  QAK 2002/06/12
    * Fixed bug (#499) which allowed an "empty" compound or enumerated datatype
        (one with no members) to be used to create a dataset or to be committed
        to a file.  QAK - 2002/06/11
    * Fixed bug (#777) which allowed a compound datatype to be inserted into
        itself.  QAK - 2002/06/10
    * Fixed bug (#789) where creating 1-D dataset region reference caused the
        library to go into infinite loop.  QAK - 2002/06/10
    * Fixed bug (#699, fix provided by a user) where a scalar dataspace was
        written to the file and then subsequently queried with the
        H5Sget_simple_extent_type function; type was reported as H5S_SIMPLE 
        instead of H5S_SCALAR. EIP - 2002/06/04
    * Clear symbol table node "dirty" flag when flushing symbol tables to
        disk, to reduce I/O calls made & improve performance.  QAK - 2002/06/03
    * Fixed bug where an object's header could get corrupted in certain
        obscure situations when many objects were created in the
        file.  QAK - 2002/05/31
    * Fixed bug where read/write intent in file IDs created with H5Freopen
        was not being kept the same as the original file.  QAK - 2002/05/14
    * Fixed bug where selection offsets were not being used when iterating
        through point and hyperslab selections with
        H5Diterate().  QAK - 2002/04/29
    * Fixed bug where the data for several level deep nested compound &
        variable-length datatypes used for datasets were getting corrupted when
        written to the file.  QAK - 2002/04/17
    * Fixed bug where selection offset was being ignored for certain hyperslab
        selections when optimized I/O was being performed.  QAK - 2002/04/02
    * Fixed limitation in h5dumper with object names which reached over 1024
        characters in length. We can now handle arbitrarily larger sizes for
        object names. BW - 2002/03/29
    * Fixed bug where variable-length string type did not behave as a
        string.  SLU - 2002/03/28
    * Fixed bug in H5Gget_objinfo() which was not setting the 'fileno'
        of the H5G_stat_t struct.  QAK - 2002/03/27
    * Fixed data corruption bug in hyperslab routines when contiguous
        hyperslab that spans entire dimension and is larger than type
        conversion buffer is attempted to be read.  QAK - 2002/03/26


Performance Improvements
========================
    This release of the HDF5 library has been extensively tuned to improve
performance, especially to improve parallel I/O performance.
    Most of the specific information for particular performance improvements
is mentioned in the "New Features" and "Bug Fixes since HDF5-1.4.3" sections
of this document, but in general, the library should make fewer and larger
I/O requests when accessing a file.  Additionally, improvements to the parallel
I/O portions of the library should have reduced the communications and barriers
used in various internal algorithms, improving the performance of the library.
    However, with the extensive changes to some portions of the library that
were required for these improvements, some errors or unanticipated results may
have been introduced also.  Please report any problems encountered to our
support team at hdfhelp@ncsa.uiuc.edu.
    Hopefully these improvements will benefit all HDF5 applications, but if
there are particular I/O patterns that appear to be slower than necessary,
please send e-mail to hdfhelp@ncsa.uiuc.edu with a sample program showing the
problem behavior; we will look into the issue to see if it is possible to
address it.


Documentation
=============
    * Documentation was updated for the hdf5-1.4.4 release.
    * A new "HDF5 User's Guide" is under development.  See 
      http://hdf.ncsa.uiuc.edu/HDF5/doc_dev_snapshot/H5_NewUG/current/.
    * A "Parallel HDF5 Tutorial" is available at 
      http://hdf.ncsa.uiuc.edu/HDF5/doc/Tutor/.
    * The "HDF5 Tutorial" is not distributed with this release.  It is 
      available at http://hdf.ncsa.uiuc.edu/HDF5/doc/Tutor/.


Platforms Tested
================

    AIX 4.3.3.0 (IBM SP powerpc)  xlc 5.0.2.0
                                  mpcc_r 5.0.2.0
                                  xlf 07.01.0000.0002
                                  mpxlf 07.01.0000.0002
    AIX 4.3 (IBM SP RS6000)       C for AIX Compiler, Version 5.0.2.0
                                  xlf 7.1.0.2
                                  poe 3.1.0.12 (includes mpi)
    AIX 5.1                       xlc 5.0.2.0 
                                  xlf 07.01.0000.0002
                                  mpcc_r 5.0.2.0; mpxlf_r 07.01.0000.0002
    Cray T3E sn6711 2.0.5.57      Cray Standard C Version 6.5.0.3
                                  Cray Fortran Version 3.5.0.4
    Cray SV1 10.0.1.1             Cray Standard C Version 6.5.0.3 
                                  Cray Fortran Version 3.5.0.4
    FreeBSD 4.6                   gcc 2.95.4
                                  g++ 2.95.4
    HP-UX B.10.20                 HP C  HP92453-01 A.10.32.30
                                  HP F90 v2.3
    HP-UX B.11.00                 HP C  HP92453-01 A.11.01.20 
                                  HP F90 v2.4
    HP-UX B.11.00 SysV            HP C  HP92453-01 A.11.01.20 
                                  HP F90 v2.4
                                  HP MPI [not a product] (03/24/2000) B6060BA
    IRIX 6.5                      MIPSpro cc 7.30
    IRIX64 6.5 (64 & n32)         MIPSpro cc 7.3.1.3m
                                  F90 MIPSpro 7.3.1.3m (64 only)
    Linux 2.4.9-31smp             gcc 2.95.3
                                  g++ 2.95.3
                                  Intel(R) C++ Version 6.0
                                  Intel(R) Fortran Compiler Version 6.0
                                  MPICH 1.2.2
    Linux 2.2.18smp               gcc 2.95.2
                                  gcc 2.95.2 with mpich 1.2.1
                                  g++ 2.95.2
                                  pgf90 3.2-4
    OSF1 V5.1                     Compaq C V6.4-014
                                  Compaq Fortran V5.5-1877-48BBF
                                  gcc version 3.0 for C++
    SunOS 5.7                     WorkShop Compilers 5.0 98/12/15 C 5.0
     (Solaris 2.7)                WorkShop Compilers 5.0 98/12/15 C++ 5.0 
                                  WorkShop Compilers 5.0 98/10/25 
                                  FORTRAN 90 2.0 Patch 107356-04 
    SunOS 5.8/32                  Sun WorkShop 6 update 1 C 5.2 2000/09/11
     (Solaris 2.8)                Sun WorkShop 6 update 1 Fortran 95 6.1 
                                          Patch 109503-07 2001/08/11
                                  Sun WorkShop 6 update 1 C++ 5.2 Patch
                                        109508-04 2001/07/11
    SunOS 5.8/64                  Sun WorkShop 6 update 1 C 5.2 2000/09/11
     (Solaris 2.8)                Sun WorkShop 6 update 1 Fortran 95 6.1 
                                          Patch 109503-07 2001/08/11
                                  Sun WorkShop 6 update 1 C++ 5.2 Patch
                                        109508-04 2001/07/11
    TFLOPS r1.0.4 v4.2.2 i386     pgcc Rel 3.1-4i with mpich-1.2.3 with
                                          local modifications
    IA-32 Linux 2.4.9             cc Intel 5.0.1
                                  gcc 2.96
                                  Intel(R) C++ Version 6.0
                                  Intel(R) Fortran Compiler Version 6.0
                                  
    IA-64 Linux 2.4.16 ia64       gcc version 2.96 20000731
                                  Intel(R) C++ Version 6.0
                                  Intel(R) Fortran Compiler Version 6.0
    Windows 2000 (NT5.0)          MSVC++ 6.0
                                  DEC Visual Fortran 6.0
    Windows NT4.0                 MSVC++ 6.0
                                  DEC Visual Fortran 6.0
    Windows NT4.0                 Code Warrior 6.0


Supported Configuration Features Summary
========================================

    In the tables below
          y  = tested and supported
          n  = not supported or not tested in this release
          x  = not working in this release
         ( ) = footnote appears below second table


    Platform           C  C         F90  F90      C++  Shared       zlib  Tools
                          parallel       parallel      libraries(5)
    Solaris2.6         y  n         y    n        y    y            y     y
    Solaris2.7 64      y  y (1)     y    n        y    y            y     y
    Solaris2.7 32      y  y (1)     y    n        y    y            y     y
    Solaris2.8 64      y  n         y    n        y    y            y     y
    Solaris2.8 32      y  n         y    n        y    y            y     y
    IRIX6.5            y  y (1)     n    n        n    y            y     y
    IRIX64_6.5 64      y  y (2)     y    y        n    y            y     y
    IRIX64_6.5 n32     y  y (2)     n    n        n    y            y     y
    HPUX10.20          y  n         y    n        n    y            y     y
    HPUX11.00          y  n         y    n        n    y            y     y
    HPUX11 SysV        y  y         y    y        n    y            y     y
    OSF1 v5.1          y  n         y    n        y    y            y     y
    T3E                y  y         y    y        n    n            y     y
    SV1                y  n         y    n        n    n            y     y
    TFLOPS             n  y (1)     n    n        n    n            y     y (4)
    AIX-4.3            y  y         y    y        y    n            y     y
    AIX-5.1            y  y         y    y        n    n            y     y
    WinNT/2000         y  n         y    n        y    y            y     y
    WinNT CW           y  n         n    n        n    n            y     y
    FreeBSD            y  n         n    n        y    y            y     y
    Linux 2.2          y  y (1)     y    n        y    y            y     y
    Linux 2.4          y  y (1)     n    n        y    y            y     y
    Linux 2.4 Intel(6) y  n         y    n        y    n            y     y
    Linux 2.4 IA32     y  n         y    n        n    n            y     y
    Linux 2.4 IA64     y  n         y    n        n    n            y     y


    Platform           1.2            static-  Thread-  SRB  GASS  STREAM-
                       compatibility  exec     safe                VFD
    Solaris2.6         y              x        y        n    n     y
    Solaris2.7 64      y              x        y        n    n     y
    Solaris2.7 32      y              x        y        n    n     y
    Solaris2.8 64      y              y        n        n    n     y
    Solaris2.8 32      y              x        y        n    n     y
    IRIX6.5            y              x        n        n    n     y
    IRIX64_6.5 64      y              x        y        n    y     y
    IRIX64_6.5 n32     y              x        y        n    y     y
    HPUX10.20          y              y        n        n    n     y
    HPUX11.00          y              x        n        n    n     y
    HPUX11 SysV        y              x        n        n    n     y
    OSF1 v5.1          y              y        n        n    n     y
    T3E                y              y        n        n    n     y
    SV1                y              y        n        n    n     y
    TFLOPS             y              y        n        n    n     n
    AIX-4.3            y              y (3)    n        n    n     y
    AIX-5.1            y              y        n        n    n     y
    WinNT/2000         y              y        n        n    n     n
    WinNT CW           n              n        n        n    n     n
    FreeBSD            y              y        y        n    n     y
    Linux 2.2          y              y        y        n    n     y
    Linux 2.4          y              y        y        n    n     y
    Linux 2.4 Intel(6) y              y        n        n    n     y
    Linux 2.4 IA32     y              y        n        n    n     y
    Linux 2.4 IA64     y              y        n        n    n     y


    Footnotes: (1) Using mpich.
               (2) Using mpt and mpich.
               (3) When configured with static-exec enabled, tests fail in 
                   serial mode.
               (4) No HDF4-related tools.
               (5) Shared libraries are provided only for the C library, 
                   except on Windows where they are provided for all languages.
               (6) Linux 2.4 with Intel compilers.


Known Problems
==============

    * Datasets or attributes which have a variable-length string datatype are
      not printing correctly with h5dump and h5ls.

    * When a dataset with the variable-length datatype is overwritten, 
      the library can develop memory leaks that cause the file to become 
      unnecessarily large.  This is planned to be fixed in the next release.

    * On the SV1, the h5ls test fails due to a difference between the 
      SV1 printf precision and the printf precision on other platforms.

    * The h5dump tests may fail to match the expected output on some
      platforms (e.g. SP2 parallel, Windows) where the error messages
      directed to "stderr" do not appear in the "right order" with output
      from stdout.  This is not an error.

    * The --enable-static-exec configure flag fails to compile for HP-UX
      11.00 platforms.

    * The executables are always dynamic on IRIX64 6.5(64 and n32) and 
      IRIX 6.5 even if they are configured with --enable-static-exec.

    * IRIX 6.5 fails to compile if configured with --enable-static-exec.
    
    * The HDF5_MPI_OPT_TYPES optimization code in the parallel HDF5 will cause
      a hang in some cases when chunked storage is used.  This is now set to
      be off by default.  One may turn it on by setting the environment 
      variable HDF5_MPI_OPT_TYPES to a non-zero value such as 1.

    * On IA32 and IA64 systems, if you use a compiler other than GCC (such as
      Intel's ecc or icc compilers), you will need to modify the generated
      "libtool" program after configuration is finished. On or around line 104
      of the libtool file, there are lines which look like:

          # How to pass a linker flag through the compiler.
          wl=""

      Change these lines to this:

          # How to pass a linker flag through the compiler.
          wl="-Wl,"

    * To build the Fortran library using Intel compilers, one has to 
          x modify the source code in the fortran/src directory to remove the
            !DEC and !MS compiler directives.
          x The build will fail in the fortran/test directory and then in the
            fortran/examples directory; to proceed, edit the work.pcl files in
            those directories to contain two lines

                    work.pc
                    ../src/work.pc 

    * To build the Fortran library on IA64 use
                   setenv CC "ecc -DIA64"
                   setenv F9X "efc -cl,work.pcl"
            before running configure and see the steps described above.


%%%%1.4.3%%%%   Release Information for hdf5-1.4.3 (18/Februaru/02)

11.  Release information for HDF5 version 1.4.3
==============================================================================


INTRODUCTION

This document describes the differences between HDF5-1.4.2 and
HDF5-1.4.3, and contains information on the platforms tested and
known problems in HDF5-1.4.2. For more details check the HISTORY.txt
file in the HDF5 source.

The HDF5 documentation can be found on the NCSA ftp server
(ftp.ncsa.uiuc.edu) in the directory:

     /HDF/HDF5/docs/

For more information look at the HDF5 home page at:
   
    http://hdf.ncsa.uiuc.edu/HDF5/

If you have any questions or comments, please send them to:

    hdfhelp@ncsa.uiuc.edu


CONTENTS

- New Features
- Bug Fixes since HDF5-1.4.2
- Documentation
- Platforms Tested
- Supported Configuration Features
- Known Problems


New Features
============
  o Configuration
  ================
    * Can use just enable-threadsafe if the C compiler has built-in pthreads
      support.

  o Library
  =========
   o General
   --------- 
    * Added a new test to verify the information provided by the configure
      command.
    * Changed internal error handling macros to reduce code size of library by
      about 10%.

   o APIs
   ------
    * Changed prototype for H5Awrite from:
        H5Awrite(hid_t attr_id, hid_t type_id, void *buf)
      to:
        H5Awrite(hid_t attr_id, hid_t type_id, const void *buf)
    * The H5Pset_fapl_split() accepts raw and meta file names similar to the
      syntax of H5Pset_fapl_multi() in addition to what it used to accept.

    C++ API:
    * Added operator= to class PredType
    * Add the overloaded member function Attribute::getName to return
      the attribute name's length as in C API.  Note that the current
      Attribute::getName, that returns "string", is still available.
    * Following the change in the C library, the corresponding C++ API
      is changed from:
        void Attribute::write( const DataType& mem_type, void *buf )
      to:
        void Attribute::write( const DataType& mem_type, const void *buf )

   o Performance
   -------------
    * Added perform programs to test the HDF5 library performance.  Programs
      are installed in directory perform/.
    * Improved performance of byte-swapping during data conversions.
    * Improved performance of single, contiguous hyperslabs when reading or
      writing.
    * Added support to read/write portions of chunks directly, if they are
      uncompressed and too large to cache.  This should speed up I/O on chunked
      datasets for a few more cases.  -QAK, 1/31/02

  o Parallel Library
  ==================
    * Parallel C HDF5 now works on HP-UX platforms, Compaq clusters,
      Linux clusters, Cplants (alpha-linux clusters).

  o Tools
  =======
    * A helper script called ``h5cc'', which helps compilation of HDF5
      programs, is now distributed with HDF5. See the reference manual
      for information on how to use this feature.
    * The H5Dumper can now dump comments associated with groups. -WCW 01-05-02

  o Support for new platforms and languages
  =========================================
    * HDF5 C++ Library is supported on Windows platforms (shared and static)
    * HDF5 F90 shared library is supported on Windows platforms.
    * HDF5 C Library is supported on IA32 and IA64 platforms.



Bug Fixes since HDF5-1.4.2 Release
==================================

    * Fixed a bug when reading chunked datasets where the edge of the dataset
      would be incorrectly detected and generate an assertion failure.
    * Fixed a bug where reading an entire dataset wasn't being handled
      optimally when the dataset had unlimited dimensions.  Dataset is read
      in a single low-level I/O now, instead of being broken into separate
      pieces internally.
    * Fixed a bug where reading or writing chunked data which needed datatype
      conversion could result in data values getting corrupted.
    * Fixed a bug where appending a point selection to the current selection
      would not actually append the point when there were no points defined
      currently.
    * Fixed a bug where 'or'ing a hyperslab with a 'none' selection would
      fail.  Now adds that hyperslab as the first hyperlab in the selection.
    * Fixed a bug in the 'big' test where quota limits weren't being detected
      properly if they caused close() to fail.
    * Fixed a bug in internal B-tree code where a B-tree was not being copied
      correctly.
    * Fixed an off-by-one error in H5Sselect_valid when hyperslab selections
      which would allow hyperslab selections which overlapped the edge of the
      selection by one element as valid.
    * Fixed the internal macros used to encode & decode file metadata, to avoid
      an unaligned access warning on IA64 machines.
    * Corrected behavior of H5Tinsert to not allow compound datatype fields to
      be inserted past the end of the datatype.
    * Retired the DPSS virtual file driver (--with-gridstorage configure
      option).
    * Fixed bug where variable-length datatypes for attributes was not working
      correctly.
    * Fixed bug where raw data re-allocated from the free-list would sometimes
      overlap with the metadata accumulator and get corrupted. QAK - 1/23/02
    * Fixed bug where a preempted chunk in the chunk data could still be
      used by an internal pointer and cause an assertion failure or core
      dump. QAK - 2/13/02
    * Fixed bug where non-zero fill-value was not being read correctly from
      certain chunked datasets when using an "all" or contiguous hyperslab
      selection.  QAK - 2/14/02


Documentation
=============
    * Documentation was updated for the hdf5-1.4.3 release.
    * A new "HDF5 User's Guide" is under development.  See 
      http://hdf.ncsa.uiuc.edu/HDF5/doc_dev_snapshot/H5_NewUG/current/.
    * Parallel Tutorial is available at http://hdf.ncsa.uiuc.edu/HDF5/doc/Tutor/


Platforms Tested
================

    AIX 4.3.3.0 (IBM SP powerpc)  xlc 5.0.2.0
                                  mpcc_r 5.0.2.0
                                  xlf 07.01.0000.0002
                                  mpxlf 07.01.0000.0002
    AIX 4.3 (IBM SP RS6000)       C for AIX Compiler, Version 5.0.2.0
                                  xlf 7.1.0.2
                                  poe 3.1.0.12 (includes mpi)
    Cray T3E sn6711 2.0.5.57      Cray Standard C Version 6.5.0.3
                                  Cray Fortran Version 3.5.0.4
    Cray SV1 10.0.0.8             Cray Standard C Version 6.5.0.3 
                                  Cray Fortran Version 3.5.0.4
    FreeBSD 4.5                   gcc 2.95.3
                                  g++ 2.95.3
    HP-UX B.10.20                 HP C  HP92453-01 A.10.32.30
                                  HP F90 v2.3
    HP-UX B.11.00                 HP C  HP92453-01 A.11.01.20 
                                  HP F90 v2.4
    HP-UX B.11.00 SysV            HP C  HP92453-01 A.11.01.20 
                                  HP F90 v2.4
                                  HP MPI [not a product] (03/24/2000) B6060BA
    IRIX 6.5                      MIPSpro cc 7.30
    IRIX64 6.5 (64 & n32)         MIPSpro cc 7.3.1.2m
    Linux 2.4.4                   gcc 2.95.3
                                  g++ 2.95.3
    Linux 2.2.18smp               gcc 2.95.2
                                  gcc 2.95.2 with mpich 1.2.1
                                  g++ 2.95.2
                                  pgf90 3.2-4
    OSF1 V5.1                     Compaq C V6.3-028         
                                  Compaq Fortran V5.4-1283
    SunOS 5.7                     WorkShop Compilers 5.0 98/12/15 C 5.0
     (Solaris 2.7)                Workshop Compilers 5.0 98/12/15 C++ 5.0 
                                  Workshop Compilers 5.0 98/10/25 
                                  FORTRAN 90 2.0 Patch 107356-04 
    SunOS 5.8/32                  Sun WorkShop 6 update 1 C 5.2 2000/09/11
     (Solaris 2.8)                Sun WorkShop 6 update 1 Fortran 95 6.1 
                                          Patch 109503-07 2001/08/11
                                  Sun WorkShop 6 update 1 C++ 5.2 Patch
                                        109508-04 2001/07/11
    SunOS 5.8/64                  Sun WorkShop 6 update 1 C 5.2 2000/09/11
     (Solaris 2.8)                Sun WorkShop 6 update 1 Fortran 95 6.1 
                                          Patch 109503-07 2001/08/11
                                  Sun WorkShop 6 update 1 C++ 5.2 Patch
                                        109508-04 2001/07/11
    TFLOPS r1.0.4 v4.0.8 i386     pgcc Rel 3.1-4i with mpich-1.2.1 with
                                          local modifications
    IA-32 Linux 2.2.10smpx        cc Intel 5.0.1
                                  egcs-2.91.66
    IA-64 Linux 2.4.16 ia64       gcc version 2.96 20000731
                                  Intel(R) C++ Itanium(TM) Compiler 
                                  for the Itanium(TM)-based applications,
                                  Version 6.0 Beta, Build 20010905       
    Windows 2000 (NT5.0)          MSVC++ 6.0
                                  DEC Visual Fortran 6.0
    Windows NT4.0                 MSVC++ 6.0
                                  DEC Visual Fortran 6.0
    Windows NT4.0                 Code Warrior 6.0
    Windows 98                    MSVC++ 6.0
                                  DEC Visual Fortran 6.0


Supported Configuration Features Summary
========================================

    In the tables below
          y  = tested and supported
          n  = not supported or not tested in this release
          x  = not working in this release
         ( ) = footnote appears below second table


    Platform       C  C         F90  F90       C++   Shared     zlib  Tools
                      parallel       parallel        libraries
                                                     (5)
    Solaris2.7     y  y (1)     y    n         y     y          y     y
    Solaris2.8 64  y  n         y    n         y     y          y     y
    Solaris2.8 32  y  n         y    n         y     y          y     y
    IA-64          y  n         n    n         n     n          y     y 
    IRIX6.5        y  y (1)     n    n         n     y          y     y
    IRIX64_6.5 64  y  y (2)     y    y         n     y          y     y
    IRIX64_6.5 32  y  y (2)     n    n         n     y          y     y
    HPUX10.20      y  n         y    n         n     y          y     y
    HPUX11.00      y  y         y    n         n     y          y     y
    HPUX11 SysV    y  y         y    n         n     y          y     y
    DECOSF         y  n         y    n         y     y          y     y
    T3E            y  y         y    y         n     n          y     y
    SV1            y  n         y    n         n     n          y     y
    TFLOPS         y  y (1)     n    n         n     n          y     y (4)
    AIX-4.3 SP2    y  y         y    y         n     n          y     n
    AIX-4.3 SP3    y  y         y    y         y     n          y     n
    Win2000        y  n         y    n         y (6) y          y     y
    Win98          y  n         y    n         y (6) y          y     y
    WinNT          y  n         y    n         y (6) y          y     y
    WinNT CW       y  n         n    n         n     n          y     y
    FreeBSD        y  n         n    n         y     y          y     y
    Linux 2.2      y  y (1)     y    n         y     y          y     y
    Linux 2.4      y  y (1)     n    n         y     y          y     y


    Platform       1.2            static-   Thread-  SRB  GASS	STREAM-
                   compatibility  exec      safe                VFD
    Solaris2.7     n              x         y        n    n     y
    Solaris2.8 64  n              y         n        n    n     y
    Solaris2.8 32  n              x         n        n    n     y
    IA-64          n              n         n        n    n     y   
    IRIX6.5        n              x         y        n    n     y
    IRIX64_6.5 64  n              x         y        n    y     y
    IRIX64_6.5 32  n              x         y        n    y     y
    HPUX10.20      n              y         n        n    n     y
    HPUX11.00      n              x         n        n    n     y
    HPUX11 SysV    n              x         n        n    n     y
    DECOSF         n              y         n        n    n     y
    T3E            n              y         n        n    n     y
    SV1            n              y         n        n    n     y
    TFLOPS         n              y         n        n    n     n
    AIX-4.3 SP2    n              y (3)     n        n    n     y
    AIX-4.3 SP3    n              y         n        n    n     y
    Win2000        n              y         n        n    n     n
    Win98          n              y         n        n    n     n
    WinNT          n              y         n        n    n     n
    WinNT CW       n              n         n        n    n     n
    FreeBSD        n              y         y        n    n     y
    Linux 2.2      n              y         y        n    n     y
    Linux 2.4      n              y         y        n    n     y


    Footnotes:  (1) Using mpich.
                (2) Using mpt and mpich.
                (3) When configured with static-exec enabled, tests fail 
                    in serial mode.
                (4) No HDF4-related tools.
                (5) Shared libraries are provided only for the C library.
		(6) Exception of (5): DLL is available for C++ API on Windows


Known Problems
==============

    * Datasets or attributes which have a variable-length string datatype are
      not printing correctly with h5dump and h5ls.

    * When a dataset with the variable-legth datatype is overwritten, 
      the library can develop memory leaks that cause the file to become 
      unnecessarily large.  This is planned to be fixed in the next release.

    * On the SV1, the h5ls test fails due to a difference between the 
      SV1 printf precision and the printf precision on other platforms.


    * The h5dump tests may fail to match the expected output in some
      platforms (e.g. SP2 parallel, Windows) where the error messages
      directed to "stderr" do not appear in the "right order" with output
      from stdout.  This is not an error.

    * The --enable-static-exec configure flag fails to compile for HP-UX
      11.00 platforms.

    * The executables are always dynamic on IRIX64 6.5(64 and n32) and 
      IRIX 6.5 even if they are configured with --enable-static-exec.

    * IRIX 6.5 fails to compile if configured with --enable-static-exec.
    
    * The HDF5_MPI_OPT_TYPES optimization code in the parallel HDF5 will cause
      a hang in some cases when chunked storage is used.  This is now set to
      be off by default.  One may turn it on by setting environment variable
      HDF5_MPI_OPT_TYPES to a non-zero value such as 1.

    * On IA64 systems one has to use -DIA64 compilation flag to compile
      h4toh5 and h5toh4 utilites. After configuration step manually modify
      Makefile in the tools/h4toh4 and tools/h5toh4 directories to add 
      -DIA64 to the compilation flags.

    * On IA32 ansd IA64 systems, if you use a compiler other than GCC 
      (such as Intel's ecc compiler), you will need to modify the generated
      "libtool" program after configuration is finished. On or around line 102 
      of the libtool file, there are lines which look like:

          # How to pass a linker flag through the compiler.
          wl=""

      change the lines to this:

          # How to pass a linker flag through the compiler.
          wl="-Wl,"


%%%%1.4.2%%%%   Release Information for hdf5-1.4.2 (31/July/01)

10.   Release Information for hdf5-1.4.2 
=================================================================


INTRODUCTION

This document describes the differences between HDF5-1.4.1 and
HDF5-1.4.2, and contains information on the platforms tested and
known problems in HDF5-1.4.2.

The HDF5 documentation can be found on the NCSA ftp server
(ftp.ncsa.uiuc.edu) in the directory:

     /HDF/HDF5/docs/

For more information look at the HDF5 home page at:
   
    http://hdf.ncsa.uiuc.edu/HDF5/

If you have any questions or comments, please send them to:

    hdfhelp@ncsa.uiuc.edu


CONTENTS

- New Features
- Bug Fixes since HDF5-1.4.1
- Documentation
- Platforms Tested
- Supported Configuration Features
- Known Problems


New Features
============

    * File sizes greater than 2GB are now supported on Linux systems with
      version 2.4.x or higher kernels.
    * Added a global string variable H5_lib_vers_info_g which holds the
      HDF5 library version information.  This can be used to identify
      an hdf5 library or hdf5 application binary.
      Also added a verification of the consistency between H5_lib_vers_info_g
      and other version information in the source code.
    * Parallel HDF5 now runs on the HP V2500 and HP N4000 machines.
    * F90 API:
        - Added aditional parameter "dims" to the h5dread_f/h5dwrite_f and
          h5aread_f/h5awrite_f subroutines.  This parameter is a 1-D array 
          of size 7 and contains the sizes of the data buffer dimensions. 
          This change enables portability between Windows and UNIX platforms.
          In previous versions of the F90 APIs, the data buffer parameters of 
          the above functions were declared as assumed-shape arrays, which 
          were passed to the C functions by a descriptor.  There is no 
          portable means, however, of passing descriptors from F90 to C, 
          causing portability problems between Windows and UNIX and among
          UNIX platforms.  With this change, the data buffers are assumed-
          size arrays, which can be portably passed to the C functions.
    * F90 static library is available on Windows platforms. 
      See INSTALL_Windows_withF90.txt for details.
    * F90 APIs are available on HPUX 11.00 and 10.20 and IBM SP platforms.
    * H5 <-> GIF convertor has been added. This is available under 
      tools/gifconv. The convertor supports the ability to create animated
      gifs as well.
    * Verified correct operation of library on Solaris 2.8 in both 64-bit and
      32-bit compilation modes.  See INSTALL document for instructions on
      compiling the distribution with 64-bit support.
    * Added support for the Metrowerks Code Warrior compiler for Windows.  
    * For H4->H5 converter utility, added a new option to choose not to convert
      HDF4 specified attributes(reference number, class) into HDF5 attributes.
    * Added support chunking and compression in SDS and image in H4->H5 converter. 
      Currently HDF5 only supports gzip compression, so by default an HDF4 file 
      with any other compression method will be converted into an HDF5 file in 
      gzip compression. 
    * correct the order or reading HDF4 image array in H4->H5 conversion.  
    * Added new parallel hdf5 tests in t_mpi.  The new test checks if the
      filesystem or the MPI-IO can really handle greater than 2GB files.
      If it fails, it prints information message only without failing the
      test.
    * Added a parallel HDF5 example examples/ph5example.c to illustrate
      the basic way of using parallel HDF5.
    * Added a new public macro, H5_VERS_INFO, which is a string holding
      the HDF5 library version information.  This string is also compiled
      into all HDF5 binary code which helps to identify the version information
      of the binary code.  One may use the Unix strings command on the binary
      file and looks for the pattern "HDF5 library version".
    * Added new checking in H5check_version() to verify the five HDF5 version
      information macros (H5_VERS_MAJOR, H5_VERS_MINOR, H5_VERS_RELEASE,
      H5_VERS_SUBRELEASE and H5_VERS_INFO) are consistent.
      
         
Bug Fixes since HDF5-1.4.1 Release
==================================

    * Fixed bug with non-zero userblock sizes causing raw data to not
      write correctly.
    * Fixed problems with Pablo build and linking with non-standard MPI I/O.
    * Fixed build on Linux systems with --enable-static-exec flag. It now
      works correctly.
    * IMPORTANT: Fixed file metadata corruption bug which could cause 
      metadata data loss in certain situations.
    * The allocation by alignment (H5Pset_alignment) feature code somehow
      got dropped in some 1.3.x version. Re-implemented it with "new and
      improved" algorithm.  It keeps track of "wasted" file-fragment in
      the free-list too.
    * Removed limitation that the data transfer buffer size needed to be
      set for datasets whose dimensions were too large for the 'all' 
      selection code to handle.  Any size dimensioned datasets should be 
      handled correctly now.
    * Changed behavior of H5Tget_member_type to correctly emulate HDF5 v1.2.x
      when --enable-hdf5v1_2 configure flag is enabled.
    * Added --enable-linux-lfs flag to allow more control over whether to 
      enable or disable large file support on Linux.
    * Fixed various bugs releated to SDS dimensional scale conversions in H4->H5 
      converter.
    * Fixed a bug to correctly convert HDF4 objects with fill value into HDF5.
    * Fixed a bug of H5pubconf.h causing repeated definitions if it is included
      more than once.  hdf5.h now includes H5public.h which includes
      H5pubconf.h.  Applications should #include hdf5.h which handles multiple
      inclusion correctly.
    * Fixed H5FDmpio.h to be C++ friendly by making Parallel HDF5 API's to be
      external to C++.
    * Fixed a bug in H5FD_mpio_flush() that might result in negative file seek
      if both MPIO and Split-file drivers are used together.



Documentation
=============

    * The H5T_conv_t and H5T_cdata_t structures are now properly defined
      in the H5Tregister entry in the "H5T" section of the "HDF5 Reference 
      Manual" and described in detail in section 12, "Data Conversions," in 
      the "Datatypes" chapter of the "HDF5 User's Guide."
    * The new tools h52gif and gif2h5 have been added to the "Tools" section
      of the Reference Manual.
    * A "Freespace Management" section has been added to the "Performance" 
      chapter of the User's Guide.
    * Several user-reported bugs have been fixed since Release 1.4.1.
    * The "HDF5 Image and Palette Specification" (in the "HDF5 Application
      Developer's Guide") has been heavily revised.  Based on extensive user 
      feedback and input from visualization software developers, Version 1.2 
      of the image specification is substantially different from prior 
      versions.


Platforms Tested
================

    AIX 4.3.3.0 (IBM SP powerpc)  xlc 3.6.6.0
                                  mpcc_r 3.6.6.0
                                  xlf 07.01.0000.0002
                                  mpxlf 07.01.0000.0002
    AIX 4.3 (IBM SP RS6000)       C for AIX Compiler, Version 5.0.2.0
                                  xlf 7.1.0.2
                                  poe 2.4.0.14 (includes mpi)
    Cray T3E sn6711 2.0.5.49a     Cray Standard C Version 6.5.0.1
    Cray SV1 10.0.0.2             Cray Standard C Version 6.5.0.1  
                                  Cray Fortran Version 3.5.0.1
    FreeBSD 4.3                   gcc 2.95.3
                                  g++ 2.95.3
    HP-UX B.10.20                 HP C  HP92453-01 A.10.32.30
                                  HP F90 v2.3
    HP-UX B.11.00                 HP C  HP92453-01 A.11.01.20 
                                  HP F90 v2.4
    HP-UX B.11.00 SysV