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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
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/*
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*
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* (C) 2001 by Argonne National Laboratory.
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* See COPYRIGHT in top-level directory.
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*/
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#include "mpiimpl.h"
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/* -- Begin Profiling Symbol Block for routine MPI_Get_accumulate */
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#if defined(HAVE_PRAGMA_WEAK)
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#pragma weak MPI_Get_accumulate = PMPI_Get_accumulate
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#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
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#pragma _HP_SECONDARY_DEF PMPI_Get_accumulate MPI_Get_accumulate
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#elif defined(HAVE_PRAGMA_CRI_DUP)
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#pragma _CRI duplicate MPI_Get_accumulate as PMPI_Get_accumulate
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#elif defined(HAVE_WEAK_ATTRIBUTE)
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int MPI_Get_accumulate(const void *origin_addr, int origin_count,
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MPI_Datatype origin_datatype, void *result_addr, int result_count,
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MPI_Datatype result_datatype, int target_rank, MPI_Aint target_disp,
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int target_count, MPI_Datatype target_datatype, MPI_Op op, MPI_Win win)
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__attribute__ ((weak, alias("PMPI_Get_accumulate")));
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#endif
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/* -- End Profiling Symbol Block */
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/* Define MPICH_MPI_FROM_PMPI if weak symbols are not supported to build
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the MPI routines */
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#ifndef MPICH_MPI_FROM_PMPI
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#undef MPI_Get_accumulate
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#define MPI_Get_accumulate PMPI_Get_accumulate
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#endif
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#undef FUNCNAME
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#define FUNCNAME MPI_Get_accumulate
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#undef FCNAME
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#define FCNAME MPL_QUOTE(FUNCNAME)
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/*@
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MPI_Get_accumulate - Perform an atomic, one-sided read-and-accumulate operation.
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Accumulate origin_count elements of type origin_datatype from the origin buffer
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(origin_addr) to the buffer at offset target_disp, in the target window
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specified by target_rank and win, using the operation op and return in the
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result buffer result_addr the content of the target buffer before the
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accumulation.
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Input Parameters:
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+ origin_addr - initial address of buffer (choice)
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. origin_count - number of entries in buffer (nonnegative integer)
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. origin_datatype - datatype of each buffer entry (handle)
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. result_addr - initial address of result buffer (choice)
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. result_count - number of entries in result buffer (non-negative integer)
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. result_datatype - datatype of each entry in result buffer (handle)
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. target_rank - rank of target (nonnegative integer)
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. target_disp - displacement from start of window to beginning of target
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buffer (nonnegative integer)
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. target_count - number of entries in target buffer (nonnegative integer)
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. target_datatype - datatype of each entry in target buffer (handle)
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. op - predefined reduce operation (handle)
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- win - window object (handle)
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Notes:
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This operations is atomic with respect to other "accumulate" operations.
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The get and accumulate steps are executed atomically for each basic element in
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the datatype (see MPI 3.0 Section 11.7 for details). The predefined operation
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'MPI_REPLACE' provides fetch-and-set behavior.
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The origin and result buffers (origin_addr and result_addr) must be disjoint.
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Each datatype argument must be a predefined datatype or a derived datatype
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where all basic components are of the same predefined datatype. All datatype
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arguments must be constructed from the same predefined datatype. The
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operation op applies to elements of that predefined type. target_datatype must
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not specify overlapping entries, and the target buffer must fit in the target
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window or in attached memory in a dynamic window.
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Any of the predefined operations for 'MPI_Reduce', as well as 'MPI_NO_OP' or
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'MPI_REPLACE' can be specified as op. User-defined functions cannot be used. A
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new predefined operation, 'MPI_NO_OP', is defined. It corresponds to the
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associative function f (a, b) = a; i.e., the current value in the target memory
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is returned in the result buffer at the origin and no operation is performed on
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the target buffer. 'MPI_NO_OP' can be used only in 'MPI_Get_accumulate',
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'MPI_Rget_accumulate', and 'MPI_Fetch_and_op'. 'MPI_NO_OP' cannot be used in
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'MPI_Accumulate', 'MPI_Raccumulate', or collective reduction operations, such as
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'MPI_Reduce' and others.
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.N Fortran
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.N Errors
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.N MPI_SUCCESS
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.N MPI_ERR_ARG
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.N MPI_ERR_COUNT
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.N MPI_ERR_RANK
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.N MPI_ERR_TYPE
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.N MPI_ERR_WIN
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.seealso: MPI_Rget_accumulate MPI_Fetch_and_op
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@*/
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int MPI_Get_accumulate(const void *origin_addr, int origin_count,
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MPI_Datatype origin_datatype, void *result_addr, int result_count,
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MPI_Datatype result_datatype, int target_rank, MPI_Aint target_disp,
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int target_count, MPI_Datatype target_datatype, MPI_Op op, MPI_Win win)
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{
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int mpi_errno = MPI_SUCCESS;
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MPIR_Win *win_ptr = NULL;
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MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_GET_ACCUMULATE);
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MPIR_ERRTEST_INITIALIZED_ORDIE();
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MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
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MPIR_FUNC_TERSE_RMA_ENTER(MPID_STATE_MPI_GET_ACCUMULATE);
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/* Validate parameters, especially handles needing to be converted */
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#ifdef HAVE_ERROR_CHECKING
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{
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MPID_BEGIN_ERROR_CHECKS;
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{
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MPIR_ERRTEST_WIN(win, mpi_errno);
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}
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MPID_END_ERROR_CHECKS;
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}
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#endif /* HAVE_ERROR_CHECKING */
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/* Convert MPI object handles to object pointers */
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MPIR_Win_get_ptr(win, win_ptr);
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/* Validate parameters and objects (post conversion) */
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#ifdef HAVE_ERROR_CHECKING
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{
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MPID_BEGIN_ERROR_CHECKS;
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{
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MPIR_Comm *comm_ptr;
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/* Validate win_ptr */
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MPIR_Win_valid_ptr(win_ptr, mpi_errno);
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if (mpi_errno)
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goto fn_fail;
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if (op != MPI_NO_OP) {
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/* NOTE: when op is MPI_NO_OP, origin_addr is allowed to be NULL,
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* origin_datatype is allowed to be MPI_DATATYPE_NULL, and
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* origin_count is allowed to be 0. In such case, MPI_Get_accumulate
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* equals to an atomic GET. */
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MPIR_ERRTEST_COUNT(origin_count, mpi_errno);
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MPIR_ERRTEST_DATATYPE(origin_datatype, "origin_datatype", mpi_errno);
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MPIR_ERRTEST_USERBUFFER(origin_addr, origin_count, origin_datatype, mpi_errno);
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}
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MPIR_ERRTEST_COUNT(result_count, mpi_errno);
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MPIR_ERRTEST_DATATYPE(result_datatype, "result_datatype", mpi_errno);
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c5cf8c |
MPIR_ERRTEST_USERBUFFER(result_addr, result_count, result_datatype, mpi_errno);
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MPIR_ERRTEST_COUNT(target_count, mpi_errno);
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MPIR_ERRTEST_DATATYPE(target_datatype, "target_datatype", mpi_errno);
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if (win_ptr->create_flavor != MPI_WIN_FLAVOR_DYNAMIC)
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MPIR_ERRTEST_DISP(target_disp, mpi_errno);
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if (op != MPI_NO_OP && HANDLE_GET_KIND(origin_datatype) != HANDLE_KIND_BUILTIN) {
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MPIR_Datatype *datatype_ptr = NULL;
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MPIR_Datatype_get_ptr(origin_datatype, datatype_ptr);
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MPIR_Datatype_valid_ptr(datatype_ptr, mpi_errno);
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if (mpi_errno != MPI_SUCCESS)
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goto fn_fail;
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MPIR_Datatype_committed_ptr(datatype_ptr, mpi_errno);
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if (mpi_errno != MPI_SUCCESS)
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goto fn_fail;
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}
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if (HANDLE_GET_KIND(result_datatype) != HANDLE_KIND_BUILTIN) {
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MPIR_Datatype *datatype_ptr = NULL;
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MPIR_Datatype_get_ptr(result_datatype, datatype_ptr);
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MPIR_Datatype_valid_ptr(datatype_ptr, mpi_errno);
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if (mpi_errno != MPI_SUCCESS)
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goto fn_fail;
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MPIR_Datatype_committed_ptr(datatype_ptr, mpi_errno);
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if (mpi_errno != MPI_SUCCESS)
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goto fn_fail;
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}
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if (HANDLE_GET_KIND(target_datatype) != HANDLE_KIND_BUILTIN) {
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MPIR_Datatype *datatype_ptr = NULL;
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MPIR_Datatype_get_ptr(target_datatype, datatype_ptr);
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MPIR_Datatype_valid_ptr(datatype_ptr, mpi_errno);
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if (mpi_errno != MPI_SUCCESS)
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goto fn_fail;
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MPIR_Datatype_committed_ptr(datatype_ptr, mpi_errno);
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if (mpi_errno != MPI_SUCCESS)
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goto fn_fail;
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}
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comm_ptr = win_ptr->comm_ptr;
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MPIR_ERRTEST_SEND_RANK(comm_ptr, target_rank, mpi_errno);
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MPIR_ERRTEST_OP_GACC(op, mpi_errno);
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}
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MPID_END_ERROR_CHECKS;
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}
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#endif /* HAVE_ERROR_CHECKING */
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/* ... body of routine ... */
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mpi_errno = MPID_Get_accumulate(origin_addr, origin_count,
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origin_datatype,
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result_addr, result_count,
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result_datatype,
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target_rank, target_disp, target_count,
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target_datatype, op, win_ptr);
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if (mpi_errno != MPI_SUCCESS)
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goto fn_fail;
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c5cf8c |
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c5cf8c |
/* ... end of body of routine ... */
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c5cf8c |
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fn_exit:
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MPIR_FUNC_TERSE_RMA_EXIT(MPID_STATE_MPI_GET_ACCUMULATE);
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MPID_THREAD_CS_EXIT(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
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return mpi_errno;
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c5cf8c |
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c5cf8c |
fn_fail:
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c5cf8c |
/* --BEGIN ERROR HANDLING-- */
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c5cf8c |
#ifdef HAVE_ERROR_CHECKING
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c5cf8c |
{
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c5cf8c |
mpi_errno =
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c5cf8c |
MPIR_Err_create_code(mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER,
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c5cf8c |
"**mpi_get_accumulate",
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c5cf8c |
"**mpi_get_accumulate %p %d %D %p %d %D %d %d %d %D %O %W",
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c5cf8c |
origin_addr, origin_count, origin_datatype, result_addr,
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c5cf8c |
result_count, result_datatype, target_rank, target_disp,
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c5cf8c |
target_count, target_datatype, op, win);
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c5cf8c |
}
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c5cf8c |
#endif
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c5cf8c |
mpi_errno = MPIR_Err_return_win(win_ptr, FCNAME, mpi_errno);
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c5cf8c |
goto fn_exit;
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c5cf8c |
/* --END ERROR HANDLING-- */
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c5cf8c |
}
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