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# Storage order for arrays
# ------------------------
ORDER_C = MPI_ORDER_C #: C order (a.k.a. row major)
ORDER_FORTRAN = MPI_ORDER_FORTRAN #: Fortran order (a.k.a. column major)
ORDER_F = MPI_ORDER_FORTRAN #: Convenience alias for ORDER_FORTRAN
# Type classes for Fortran datatype matching
# ------------------------------------------
TYPECLASS_INTEGER = MPI_TYPECLASS_INTEGER
TYPECLASS_REAL = MPI_TYPECLASS_REAL
TYPECLASS_COMPLEX = MPI_TYPECLASS_COMPLEX
# Type of distributions (HPF-like arrays)
# ---------------------------------------
DISTRIBUTE_NONE = MPI_DISTRIBUTE_NONE #: Dimension not distributed
DISTRIBUTE_BLOCK = MPI_DISTRIBUTE_BLOCK #: Block distribution
DISTRIBUTE_CYCLIC = MPI_DISTRIBUTE_CYCLIC #: Cyclic distribution
DISTRIBUTE_DFLT_DARG = MPI_DISTRIBUTE_DFLT_DARG #: Default distribution argument
cdef class Datatype:
"""
Datatype
"""
def __cinit__(self):
self.ob_mpi = MPI_DATATYPE_NULL
def __dealloc__(self):
if not (self.flags & PyMPI_OWNED): return
CHKERR( _del_Datatype(&self.ob_mpi) )
def __richcmp__(self, other, int op):
if not isinstance(self, Datatype): return NotImplemented
if not isinstance(other, Datatype): return NotImplemented
cdef Datatype s = self, o = other
if op == 2: return (s.ob_mpi == o.ob_mpi)
elif op == 3: return (s.ob_mpi != o.ob_mpi)
else: raise TypeError(mpistr("only '==' and '!='"))
def __nonzero__(self):
return self.ob_mpi != MPI_DATATYPE_NULL
# Datatype Accessors
# ------------------
def Get_extent(self):
"""
Return lower bound and extent of datatype
"""
cdef MPI_Aint lb = 0, extent = 0
CHKERR( MPI_Type_get_extent(self.ob_mpi, &lb, &extent) )
return (lb, extent)
property extent:
"""extent"""
def __get__(self):
cdef MPI_Aint lb = 0, extent = 0
CHKERR( MPI_Type_get_extent(self.ob_mpi, &lb, &extent) )
return extent
property lb:
"""lower bound"""
def __get__(self):
cdef MPI_Aint lb = 0, extent = 0
CHKERR( MPI_Type_get_extent(self.ob_mpi, &lb, &extent) )
return lb
property ub:
"""upper bound"""
def __get__(self):
cdef MPI_Aint lb = 0, extent = 0
CHKERR( MPI_Type_get_extent(self.ob_mpi, &lb, &extent) )
return lb + extent
def Get_size(self):
"""
Return the number of bytes occupied
by entries in the datatype
"""
cdef int size = 0
CHKERR( MPI_Type_size(self.ob_mpi, &size) )
return size
property size:
"""size (in bytes)"""
def __get__(self):
cdef int size = 0
CHKERR( MPI_Type_size(self.ob_mpi, &size) )
return size
# Datatype Constructors
# ---------------------
def Dup(self):
"""
Duplicate a datatype
"""
cdef Datatype datatype = type(self)()
CHKERR( MPI_Type_dup(self.ob_mpi, &datatype.ob_mpi) )
return datatype
def Create_contiguous(self, int count):
"""
Create a contiguous datatype
"""
cdef Datatype datatype = type(self)()
CHKERR( MPI_Type_contiguous(count, self.ob_mpi,
&datatype.ob_mpi) )
return datatype
def Create_vector(self, int count, int blocklength, int stride):
"""
Create a vector (strided) datatype
"""
cdef Datatype datatype = type(self)()
CHKERR( MPI_Type_vector(count, blocklength, stride,
self.ob_mpi, &datatype.ob_mpi) )
return datatype
def Create_hvector(self, int count, int blocklength, Aint stride):
"""
Create a vector (strided) datatype
"""
cdef Datatype datatype = type(self)()
CHKERR( MPI_Type_create_hvector(count, blocklength, stride,
self.ob_mpi,
&datatype.ob_mpi) )
return datatype
def Create_indexed(self, blocklengths, displacements):
"""
Create an indexed datatype
"""
cdef int count = len(displacements)
cdef int *iblen=NULL
tmp1 = asarray_int(blocklengths, &iblen, count)
cdef int *idisp=NULL
tmp2 = asarray_int(displacements, &idisp, count)
#
cdef Datatype datatype = type(self)()
CHKERR( MPI_Type_indexed(count, iblen, idisp,
self.ob_mpi, &datatype.ob_mpi) )
return datatype
def Create_indexed_block(self, int blocklength, displacements):
"""
Create an indexed datatype
with constant-sized blocks
"""
cdef int count = len(displacements)
cdef int *idisp=NULL
tmp2 = asarray_int(displacements, &idisp, count)
#
cdef Datatype datatype = type(self)()
CHKERR( MPI_Type_create_indexed_block(count, blocklength,
idisp, self.ob_mpi,
&datatype.ob_mpi) )
return datatype
def Create_hindexed(self, blocklengths, displacements):
"""
Create an indexed datatype
with displacements in bytes
"""
cdef int count = len(displacements)
cdef int *iblen=NULL
tmp1 = asarray_int(blocklengths, &iblen, count)
cdef MPI_Aint *idisp=NULL
tmp2 = asarray_Aint(displacements, &idisp, count)
#
cdef Datatype datatype = type(self)()
CHKERR( MPI_Type_create_hindexed(count, iblen, idisp,
self.ob_mpi,
&datatype.ob_mpi) )
return datatype
def Create_subarray(self, sizes, subsizes, starts,
int order=ORDER_C):
"""
Create a datatype for a subarray of
a regular, multidimensional array
"""
cdef int ndims = len(sizes)
cdef int *isizes = NULL
tmp1 = asarray_int(sizes, &isizes, ndims)
cdef int *isubsizes = NULL
tmp2 = asarray_int(subsizes, &isubsizes, ndims)
cdef int *istarts = NULL
tmp3 = asarray_int(starts, &istarts, ndims)
cdef int iorder = MPI_ORDER_C
if order is not None: iorder = order
#
cdef Datatype datatype = type(self)()
CHKERR( MPI_Type_create_subarray(ndims, isizes,
isubsizes, istarts,
iorder, self.ob_mpi,
&datatype.ob_mpi) )
return datatype
def Create_darray(self, int size, int rank,
gsizes, distribs, dargs, psizes,
int order=ORDER_C):
"""
Create a datatype representing an HPF-like
distributed array on Cartesian process grids
"""
cdef int ndims = len(gsizes)
cdef int *igsizes=NULL
tmp1 = asarray_int(gsizes, &igsizes, ndims)
cdef int *idistribs=NULL
tmp2 = asarray_int(distribs, &idistribs, ndims)
cdef int *idargs=NULL
tmp3 = asarray_int(dargs, &idargs, ndims)
cdef int *ipsizes=NULL
tmp4 = asarray_int(psizes, &ipsizes, ndims)
cdef int iorder = MPI_ORDER_C
if order is not None: iorder = order
#
cdef Datatype datatype = type(self)()
CHKERR( MPI_Type_create_darray(size, rank, ndims, igsizes,
idistribs, idargs, ipsizes,
iorder, self.ob_mpi,
&datatype.ob_mpi) )
return datatype
@classmethod
def Create_struct(cls, blocklengths, displacements, datatypes):
"""
Create an datatype from a general set of
block sizes, displacements and datatypes
"""
cdef int count = len(displacements)
cdef int *iblen=NULL
tmp1 = asarray_int(blocklengths, &iblen, count)
cdef MPI_Aint *idisp=NULL
tmp2 = asarray_Aint(displacements, &idisp, count)
cdef MPI_Datatype *itype=NULL
tmp3 = asarray_Datatype(datatypes, &itype, count)
#
cdef Datatype datatype = cls()
CHKERR( MPI_Type_create_struct(count, iblen, idisp, itype,
&datatype.ob_mpi) )
return datatype
# Size-specific Datatypes
# -----------------------
@classmethod
def Match_size(cls, int typeclass, int size):
"""
Find a datatype matching a specified size in bytes
"""
cdef MPI_Datatype datatype = MPI_DATATYPE_NULL
CHKERR( MPI_Type_match_size(typeclass, size, &datatype) )
return _new_Datatype(datatype)
# Use of Derived Datatypes
# ------------------------
def Commit(self):
"""
Commit the datatype
"""
CHKERR( MPI_Type_commit(&self.ob_mpi) )
return self
def Free(self):
"""
Free the datatype
"""
CHKERR( MPI_Type_free(&self.ob_mpi) )
# Datatype Resizing
# -----------------
def Create_resized(self, Aint lb, Aint extent):
"""
Create a datatype with a new lower bound and extent
"""
cdef Datatype datatype = type(self)()
CHKERR( MPI_Type_create_resized(self.ob_mpi,
lb, extent,
&datatype.ob_mpi) )
return datatype
Resized = Create_resized
def Get_true_extent(self):
"""
Return the true lower bound and extent of a datatype
"""
cdef MPI_Aint lb = 0, extent = 0
CHKERR( MPI_Type_get_true_extent(self.ob_mpi,
&lb, &extent) )
return (lb, extent)
property true_extent:
"""true extent"""
def __get__(self):
cdef MPI_Aint lb = 0, extent = 0
CHKERR( MPI_Type_get_true_extent(self.ob_mpi,
&lb, &extent) )
return extent
property true_lb:
"""true lower bound"""
def __get__(self):
cdef MPI_Aint lb = 0, extent = 0
CHKERR( MPI_Type_get_true_extent(self.ob_mpi,
&lb, &extent) )
return lb
property true_ub:
"""true upper bound"""
def __get__(self):
cdef MPI_Aint lb = 0, extent = 0
CHKERR( MPI_Type_get_true_extent(self.ob_mpi, &lb,
&extent) )
return lb + extent
# Pack and Unpack
# ---------------
def Pack(self, inbuf, outbuf, int position, Comm comm not None):
"""
Pack into contiguous memory according to datatype.
"""
cdef MPI_Aint lb = 0, extent = 0
CHKERR( MPI_Type_get_extent(self.ob_mpi, &lb, &extent) )
#
cdef void *ibptr = NULL, *obptr = NULL
cdef MPI_Aint iblen = 0, oblen = 0
cdef ob1 = asbuffer_r(inbuf, &ibptr, &iblen)
cdef ob2 = asbuffer_w(outbuf, &obptr, &oblen)
cdef int icount = <int>(iblen/extent), osize = <int>oblen
#
CHKERR( MPI_Pack(ibptr, icount, self.ob_mpi, obptr, osize,
&position, comm.ob_mpi) )
return position
def Unpack(self, inbuf, int position, outbuf, Comm comm not None):
"""
Unpack from contiguous memory according to datatype.
"""
cdef MPI_Aint lb = 0, extent = 0
CHKERR( MPI_Type_get_extent(self.ob_mpi, &lb, &extent) )
#
cdef void *ibptr = NULL, *obptr = NULL
cdef MPI_Aint iblen = 0, oblen = 0
cdef ob1 = asbuffer_r(inbuf, &ibptr, &iblen)
cdef ob2 = asbuffer_w(outbuf, &obptr, &oblen)
cdef int isize = <int>iblen, ocount = <int>(oblen/extent)
#
CHKERR( MPI_Unpack(ibptr, isize, &position, obptr, ocount,
self.ob_mpi, comm.ob_mpi) )
return position
def Pack_size(self, int count, Comm comm not None):
"""
Returns the upper bound on the amount of space (in bytes)
needed to pack a message according to datatype.
"""
cdef int size = 0
CHKERR( MPI_Pack_size(count, self.ob_mpi,
comm.ob_mpi, &size) )
return size
# Canonical Pack and Unpack
# -------------------------
def Pack_external(self, datarep, inbuf, outbuf, Aint position):
"""
Pack into contiguous memory according to datatype,
using a portable data representation (**external32**).
"""
cdef char *cdatarep = NULL
datarep = asmpistr(datarep, &cdatarep, NULL)
cdef MPI_Aint lb = 0, extent = 0
CHKERR( MPI_Type_get_extent(self.ob_mpi, &lb, &extent) )
#
cdef void *ibptr = NULL, *obptr = NULL
cdef MPI_Aint iblen = 0, oblen = 0
cdef ob1 = asbuffer_r(inbuf, &ibptr, &iblen)
cdef ob2 = asbuffer_w(outbuf, &obptr, &oblen)
cdef int icount = <int>(iblen/extent)
cdef MPI_Aint osize = <int>oblen
#
CHKERR( MPI_Pack_external(cdatarep, ibptr, icount,
self.ob_mpi,
obptr, osize, &position) )
return position
def Unpack_external(self, datarep, inbuf, Aint position, outbuf):
"""
Unpack from contiguous memory according to datatype,
using a portable data representation (**external32**).
"""
cdef char *cdatarep = NULL
datarep = asmpistr(datarep, &cdatarep, NULL)
cdef MPI_Aint lb = 0, extent = 0
CHKERR( MPI_Type_get_extent(self.ob_mpi, &lb, &extent) )
#
cdef void *ibptr = NULL, *obptr = NULL
cdef MPI_Aint iblen = 0, oblen = 0
cdef ob1 = asbuffer_r(inbuf, &ibptr, &iblen)
cdef ob2 = asbuffer_w(outbuf, &obptr, &oblen)
cdef MPI_Aint isize = iblen,
cdef int ocount = <int>(oblen/extent)
#
CHKERR( MPI_Unpack_external(cdatarep, ibptr, isize, &position,
obptr, ocount, self.ob_mpi) )
return position
def Pack_external_size(self, datarep, int count):
"""
Returns the upper bound on the amount of space (in bytes)
needed to pack a message according to datatype,
using a portable data representation (**external32**).
"""
cdef char *cdatarep = NULL
cdef MPI_Aint size = 0
datarep = asmpistr(datarep, &cdatarep, NULL)
CHKERR( MPI_Pack_external_size(cdatarep, count,
self.ob_mpi, &size) )
return size
# Naming Objects
# --------------
def Get_name(self):
"""
Get the print name for this datatype
"""
cdef char name[MPI_MAX_OBJECT_NAME+1]
cdef int nlen = 0
CHKERR( MPI_Type_get_name(self.ob_mpi, name, &nlen) )
return tompistr(name, nlen)
def Set_name(self, name):
"""
Set the print name for this datatype
"""
cdef char *cname = NULL
name = asmpistr(name, &cname, NULL)
CHKERR( MPI_Type_set_name(self.ob_mpi, cname) )
property name:
"""datatype name"""
def __get__(self):
return self.Get_name()
def __set__(self, value):
self.Set_name(value)
# Fortran Handle
# --------------
def py2f(self):
"""
"""
return MPI_Type_c2f(self.ob_mpi)
@classmethod
def f2py(cls, arg):
"""
"""
cdef Datatype datatype = cls()
datatype.ob_mpi = MPI_Type_f2c(arg)
return datatype
# Address Function
# ----------------
def Get_address(location):
"""
Get the address of a location in memory
"""
cdef void *baseptr = NULL
asmemory(location, &baseptr, NULL)
cdef MPI_Aint address = 0
CHKERR( MPI_Get_address(baseptr, &address) )
return address
cdef Datatype __DATATYPE_NULL__ = _new_Datatype( MPI_DATATYPE_NULL )
cdef Datatype __CHAR__ = _new_Datatype( MPI_CHAR )
cdef Datatype __WCHAR__ = _new_Datatype( MPI_WCHAR )
cdef Datatype __SIGNED_CHAR__ = _new_Datatype( MPI_SIGNED_CHAR )
cdef Datatype __UNSIGNED_CHAR__ = _new_Datatype( MPI_UNSIGNED_CHAR )
cdef Datatype __SHORT__ = _new_Datatype( MPI_SHORT )
cdef Datatype __UNSIGNED_SHORT__ = _new_Datatype( MPI_UNSIGNED_SHORT )
cdef Datatype __INT__ = _new_Datatype( MPI_INT )
cdef Datatype __UNSIGNED__ = _new_Datatype( MPI_UNSIGNED )
cdef Datatype __LONG__ = _new_Datatype( MPI_LONG )
cdef Datatype __UNSIGNED_LONG__ = _new_Datatype( MPI_UNSIGNED_LONG )
cdef Datatype __FLOAT__ = _new_Datatype( MPI_FLOAT )
cdef Datatype __DOUBLE__ = _new_Datatype( MPI_DOUBLE )
cdef Datatype __LONG_DOUBLE__ = _new_Datatype( MPI_LONG_DOUBLE )
cdef Datatype __BYTE__ = _new_Datatype( MPI_BYTE )
cdef Datatype __PACKED__ = _new_Datatype( MPI_PACKED )
cdef Datatype __SHORT_INT__ = _new_Datatype( MPI_SHORT_INT )
cdef Datatype __TWOINT__ = _new_Datatype( MPI_2INT )
cdef Datatype __LONG_INT__ = _new_Datatype( MPI_LONG_INT )
cdef Datatype __FLOAT_INT__ = _new_Datatype( MPI_FLOAT_INT )
cdef Datatype __DOUBLE_INT__ = _new_Datatype( MPI_DOUBLE_INT )
cdef Datatype __LONG_DOUBLE_INT__ = _new_Datatype( MPI_LONG_DOUBLE_INT )
cdef Datatype __LONG_LONG__ = _new_Datatype( MPI_LONG_LONG )
cdef Datatype __UNSIGNED_LONG_LONG__ = _new_Datatype( MPI_UNSIGNED_LONG_LONG )
cdef Datatype __LONG_LONG_INT__ = _new_Datatype( MPI_LONG_LONG_INT )
cdef Datatype __CHARACTER__ = _new_Datatype( MPI_CHARACTER )
cdef Datatype __LOGICAL__ = _new_Datatype( MPI_LOGICAL )
cdef Datatype __INTEGER__ = _new_Datatype( MPI_INTEGER )
cdef Datatype __REAL__ = _new_Datatype( MPI_REAL )
cdef Datatype __DOUBLE_PRECISION__ = _new_Datatype( MPI_DOUBLE_PRECISION )
cdef Datatype __F_COMPLEX__ = _new_Datatype( MPI_COMPLEX )
cdef Datatype __F_DOUBLE_COMPLEX__ = _new_Datatype( MPI_DOUBLE_COMPLEX )
cdef Datatype __UB__ = _new_Datatype( MPI_UB )
cdef Datatype __LB__ = _new_Datatype( MPI_LB )
# Predefined datatype handles
# ---------------------------
DATATYPE_NULL = __DATATYPE_NULL__ #: Null datatype handle
# Elementary datatypes
CHAR = __CHAR__
WCHAR = __WCHAR__
SIGNED_CHAR = __SIGNED_CHAR__
UNSIGNED_CHAR = __UNSIGNED_CHAR__
SHORT = __SHORT__
UNSIGNED_SHORT = __UNSIGNED_SHORT__
INT = __INT__
UNSIGNED = __UNSIGNED__
LONG = __LONG__
UNSIGNED_LONG = __UNSIGNED_LONG__
FLOAT = __FLOAT__
DOUBLE = __DOUBLE__
LONG_DOUBLE = __LONG_DOUBLE__
BYTE = __BYTE__
PACKED = __PACKED__
# Datatypes for reduction operations
SHORT_INT = __SHORT_INT__
TWOINT = __TWOINT__
LONG_INT = __LONG_INT__
FLOAT_INT = __FLOAT_INT__
DOUBLE_INT = __DOUBLE_INT__
LONG_DOUBLE_INT = __LONG_DOUBLE_INT__
# Optional datatypes
LONG_LONG = __LONG_LONG__
UNSIGNED_LONG_LONG = __UNSIGNED_LONG_LONG__
LONG_LONG_INT = __LONG_LONG_INT__
# Fortran datatypes
CHARACTER = __CHARACTER__
LOGICAL = __LOGICAL__
INTEGER = __INTEGER__
REAL = __REAL__
DOUBLE_PRECISION = __DOUBLE_PRECISION__
F_COMPLEX = __F_COMPLEX__
F_DOUBLE_COMPLEX = __F_DOUBLE_COMPLEX__
# Special datatypes (for constructing derived datatypes)
UB = __UB__ #: upper-bound marker (deprecated in MPI-2)
LB = __LB__ #: lower-bound marker (deprecated in MPI-2)
# Convenience aliases (not in the MPI-1/MPI-2 stardards)
UNSIGNED_INT = __UNSIGNED__
INT_INT = __TWOINT__
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