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<html>
<head><title>
HDF5 Special Topics and Technical Notes
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<a href="index.html">HDF5 documents and links</a> <br>
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<h1>HDF5 Special Topics and Technical Notes</h1>
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<h3>Technical Notes for HDF5 Library and Driver Developers</h3>
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<table cellpadding="5" border=0 width=95%>
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This informal collection is of interest to those
with specific technical interests in HDF5.
, including
HDF5 Library installation, development, and maintenance, and
the development and maintenance of drivers
that are closely-coupled with HDF5.
These notes are not generally of interest to applications developers
and certainly not of interest to end users.
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Documents in the second section are not formally maintained and
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<hr>
<h3>Special Topics</h3>
</td></tr>
<tr><td valign=top>
<a href="TechNotes/VFL.html">Virtual File Layer</a>
</td><td> </td><td valign=top colspan="3">
A description of the HDF5 virtual file layer (VFL),
a public API for the implementation of custom I/O drivers
</td></tr>
<tr><td valign=top>
<a href="TechNotes/VFLfunc.html">List of VFL Functions</a>
</td><td> </td><td valign=top colspan="3">
A list of the VFL functions, <code>H5FD*</code>
</td></tr>
<tr><td valign=top>
<a href="TechNotes/Version.html">HDF5 Library Version Numbers</a>
</td><td> </td><td valign=top colspan="3">
A description of HDF5 release version numbers
</td></tr>
<tr><td valign=top>
<a href="TechNotes/ReleaseSigning.html">Checksumming and
Digitally Signing HDF5 Releases</a>
</td><td> </td><td valign=top colspan="3">
Explanation of what MD5 checksums and PGP signatures are and why and
how to apply them to HDF5 releases.
<!--
</td><td> </td><td valign=top><font size="-1">
19 Sep 2005</font>
-->
</td></tr>
<tr><td valign=top>
<a href="TechNotes/Automake.html">Automake Use Cases</a>
</td><td> </td><td valign=top colspan="3">
Simple explanations of how to make some common changes to
HDF5’s Automake-generated Makefiles.am.
<!--
</td><td> </td><td valign=top><font size="-1">
22 Sep 2005</font>
-->
</td></tr>
<tr><td valign=top>
<a href="TechNotes/Daily_Test_Explained.htm">Daily Test Explained</a>
</td><td> </td><td valign=top colspan="3">
An explanation of the Daily Testing for HDF software conducted.
<!--
</td><td> </td><td valign=top><font size="-1">
28 Oct 2002</font>
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</td></tr>
<tr><td valign=top>
<a href="TechNotes/VLTypes.html">Variable-length Datatype Information</a>
<!-- -->
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</td><td> </td><td valign=top colspan="3">
A description of various aspects of using variable-length datatypes
in HDF5.
<!--
</td><td> </td><td valign=top><font size="-1">
9 Sep 2003</font>
-->
</td></tr>
<tr><td colspan="5">
<hr>
</td></tr>
<tr><td valign=top colspan=5>
<h3>Technical Notes and Historical Notes</h3>
These documents are retained they shed light on HDF5’s
design and development history;
many were working papers for the original HDF5 design process.
<p>
Where available, the most recent update of the technical content
of a document is listed in the right-hand column.
These documents are not actively maintained and may be out of date.
</td></tr>
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<a href="TechNotes/MemoryMgmt.html">Memory Management</a>
</td><td> </td><td valign=top>
A discussion of memory management issues in HDF5
</td><td> </td><td valign=top><font size="-1">
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31 July 1997 <i>?</i>
-->
</font>
</td></tr>
<tr><td valign=top>
<a href="TechNotes/FreeLists.html">Memory Management and Free Lists</a>
</td><td> </td><td valign=top>
Notes regarding the implementation of free lists and memory management
</td><td> </td><td valign=top><font size="-1">
3 May 2000</font>
</td></tr>
<tr><td valign=top><a href="TechNotes/HeapMgmt.html">Heap Management</a>
</td><td> </td><td valign=top>
A discussion of the H5H heap management functions
</td><td> </td><td valign=top><font size="-1">
8 July 1998</font>
</td></tr>
<tr><td valign=top><a href="TechNotes/RawDStorage.html">Raw Data Storage</a>
</td><td> </td><td valign=top>
A discussion of the storage of raw HDF5 data
</td><td> </td><td valign=top><font size="-1">
25 Nov 1997</font>
</td></tr>
<tr><td valign=top><a href="TechNotes/IOPipe.html">I/O Pipeline</a>
</td><td> </td><td valign=top>
A description of the raw data I/O pipeline
</td><td> </td><td valign=top><font size="-1">
18 Mar 1998</font>
</td></tr>
<tr><td valign=top><a href="TechNotes/BigDataSmMach.html">
Large Datasets on Small Machines</a>
</td><td> </td><td valign=top>
A guide to accessing large datasets on small computers
</td><td> </td><td valign=top><font size="-1">
19 Jul 1998</font>
</td></tr>
<tr><td valign=top><a href="TechNotes/MoveDStruct.html">
Relocating a File Data Structure</a>
</td><td> </td><td valign=top>
A discussion of the issues involved in moving file data structures once
they have been cached in memory
</td><td> </td><td valign=top><font size="-1">
14 Jul 1997</font>
</td></tr>
<tr><td valign=top><a href="TechNotes/ExternalFiles.html">
Working with External Files</a>
</td><td> </td><td valign=top>
A guide to the use of multiple files with HDF5
</td><td> </td><td valign=top><font size="-1">
8 Sep 1998</font>
</td></tr>
<tr><td valign=top><a href="TechNotes/ObjectHeader.html">Object Headers</a>
</td><td> </td><td valign=top>
A discussion of the H5O object header functions
</td><td> </td><td valign=top><font size="-1">
8 Jul 1998</font>
</td></tr>
<tr><td valign=top><a href="TechNotes/SymbolTables.html">
Symbol Table Caching Issues</a>
</td><td> </td><td valign=top>
A discussion of issues involving caching of object header messages in
symbol table entries
</td><td> </td><td valign=top><font size="-1">
8 Jul 1998</font>
</td></tr>
<tr><td valign=top><a href="TechNotes/H4-H5Compat.html">
HDF4/HDF5 Compatibility</a>
</td><td> </td><td valign=top>
A discussion of compatibility issues between HDF4 and HDF5
</td><td> </td><td valign=top><font size="-1">
8 Oct 1997</font>
</td></tr>
<tr><td valign=top><a href="TechNotes/ChunkingStudy.html">
Testing the Chunked Layout of HDF5</a>
</td><td> </td><td valign=top>
A white paper discussing the motivation to implement raw data chunking
in the HDF5 library
</td><td> </td><td valign=top><font size="-1">
30 Jan 1997</font>
</td></tr>
<tr><td valign=top><a href="TechNotes/LibMaint.html">Library Maintenance</a>
</td><td> </td><td valign=top>
A discussion of HDF5 library maintenance issues
</td><td> </td><td valign=top><font size="-1">
15 Oct 1999</font>
</td></tr>
<tr><td valign=top><a href="TechNotes/CodeReview.html">Code Review</a>
</td><td> </td><td valign=top>
Code Review 1 and 2
</td><td> </td><td valign=top><font size="-1">
10 Nov 1997</font>
</td></tr>
<tr><td valign=top><a href="TechNotes/NamingScheme.html">Naming Schemes</a>
</td><td> </td><td valign=top>
A discussion of naming schemes for HDF5 library modules, functions,
datatypes, etc.
</td><td> </td><td valign=top><font size="-1">
5 Aug 1997</font>
</td></tr>
<tr><td valign=top>
<a href="TechNotes/ThreadSafeLibrary.html">Thread Safe HDF5 Library
Implementation</a>
</td><td> </td><td valign=top>
A report on the implementation of a thread safe HDF5 library.
</td><td> </td><td valign=top><font size="-1">
27 Sep 2000</font>
</td></tr>
<tr><td valign=top>
<a href="TechNotes/openmp-hdf5.html">Using HDF5 with OpenMP</a>
</td><td> </td><td valign=top>
A short report on using HDF5 with OpenMP.
</td><td> </td><td valign=top><font size="-1">
28 Nov 2000 </font>
</td></tr>
<tr><td valign=top>
<a href="TechNotes/SWControls.html">HDF5 Software Controls</a>
</td><td> </td><td valign=top>
Descriptions of the HDF5 knobs and controls, such as the
environment variables and settings that control the functionality
of the HDF5 libraries and tools.
</td><td> </td><td valign=top><font size="-1">
11 Dec 2000</font>
</td></tr>
<tr><td valign=top>
<a href="TechNotes/TestReview.html">Test Review</a>
</td><td> </td><td valign=top>
Results of reviewing tests for API functions.
</td><td> </td><td valign=top><font size="-1">
11 Nov 2002</font>
</td></tr>
<tr><td valign=top>
<a href="TechNotes/Basic_perform.html">Basic Performance Tools</a>
</td><td> </td><td valign=top>
A description of the three basic performance tools (chunk, iopipe,
overhead).
</td><td> </td><td valign=top><font size="-1">
4 Jun 2003</font>
</td></tr>
<tr><td valign=top>
<a href="TechNotes/ReservedFileSpace.html">Reserved File Address Space</a>
</td><td> </td><td valign=top>
A description of HDF5’s internal system for ensuring that files
stay within their address space.
</td><td> </td><td valign=top><font size="-1">
28 Sep 2006</font>
</td></tr>
<tr><td valign=top><a href="TechNotes/DataTransformReport.htm">Data Transform
Report</a>
</td><td> </td><td valign=top>
Report of the data transform implementation.
</td><td> </td><td valign=top><font size="-1">
10 Dec 2004</font>
</td></tr>
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<a href="index.html">HDF5 documents and links</a> <br>
<a href="H5.intro.html">Introduction to HDF5</a> <br>
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<a href="Glossary.html">Glossary</a><br>
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<a href="UG/index.html">HDF5 User's Guide</a> <br>
<a href="ADGuide.html">HDF5 Application Developer's Guide</a> <br>
<a href="RM/RM_H5Front.html">HDF5 Reference Manual</a> <br>
<!--
And in this document,
HDF5 Technical Notes
<br>
<a href="TechNotes/FreeLists.html">Memory Management and Free Lists</a>
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The HDF Group Help Desk: <img src="Graphics/help.png" align=top height=16>
<br>
Describes HDF5 Release 1.8.13, May 2014.
</address>
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<a href="Copyright.html">Copyright</a> by
<a href="http://www.hdfgroup.org">The HDF Group</a>
<br>
and the Board of Trustees of the University of Illinois
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Last modified: 14 September 2012
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