d5e0ea3590
you can't be in a post and a start at the same time, and that is clearly legal to do * Fix interptretation of when the epochs start for MPI_Fence. Only start an epoch if communication actually occurs, otherwise it isn't actually an epoch. I don't know who thought that wording in the MPI standard was a good idea, but can't change it now... This commit was SVN r9139.
131 строка
5.1 KiB
C
131 строка
5.1 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "ompi_config.h"
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#include <stdio.h>
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#include "ompi/mpi/c/bindings.h"
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#include "ompi/win/win.h"
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#include "ompi/mca/osc/osc.h"
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#include "ompi/op/op.h"
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#include "ompi/datatype/datatype.h"
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#include "ompi/datatype/datatype_internal.h"
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#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_Accumulate = PMPI_Accumulate
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#endif
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#if OMPI_PROFILING_DEFINES
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#include "ompi/mpi/c/profile/defines.h"
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#endif
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static const char FUNC_NAME[] = "MPI_Accumlate";
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int MPI_Accumulate(void *origin_addr, int origin_count, MPI_Datatype origin_datatype,
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int target_rank, MPI_Aint target_disp, int target_count,
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MPI_Datatype target_datatype, MPI_Op op, MPI_Win win)
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{
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int rc;
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ompi_win_t *ompi_win = (ompi_win_t*) win;
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if (target_rank == MPI_PROC_NULL) return MPI_SUCCESS;
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if (MPI_PARAM_CHECK) {
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rc = OMPI_SUCCESS;
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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if (ompi_win_invalid(win)) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_WIN, FUNC_NAME);
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} else if (origin_count < 0 || target_count < 0) {
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rc = MPI_ERR_COUNT;
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} else if (ompi_win_peer_invalid(win, target_rank)) {
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rc = MPI_ERR_RANK;
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} else if (MPI_OP_NULL == op) {
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rc = MPI_ERR_OP;
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} else if (!ompi_win_comm_allowed(win)) {
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rc = MPI_ERR_RMA_CONFLICT;
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} else {
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OMPI_CHECK_DATATYPE_FOR_SEND(rc, origin_datatype, origin_count);
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}
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OMPI_ERRHANDLER_CHECK(rc, win, rc, FUNC_NAME);
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/* While technically the standard probably requires that the
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datatypes used with MPI_REPLACE conform to all the rules
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for other reduction operators, we don't require such
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behaivor, as checking for it is expensive here and we don't
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care in implementation.. */
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if (op != &ompi_mpi_op_replace) {
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ompi_datatype_t *op_check_dt;
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char *msg;
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/* ACCUMULATE, unlike REDUCE, can use with derived
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datatypes with predefinied operations, with some
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restrictions outlined in MPI-2:6.3.4. The derived
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datatype must be composed entirley from one predefined
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datatype (so you can do all the construction you want,
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but at the bottom, you can only use one datatype, say,
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MPI_INT). If the datatype at the target isn't
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predefined, then make sure it's composed of only one
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datatype, and check that datatype against
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ompi_op_is_valid(). */
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if (ompi_ddt_is_predefined(target_datatype)) {
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op_check_dt = target_datatype;
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} else {
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int i, index = -1, num_found = 0;
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uint64_t mask = 1;
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for (i = 0 ; i < DT_MAX_PREDEFINED ; ++i) {
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if (target_datatype->bdt_used & mask) {
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num_found++;
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index = i;
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}
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mask *= 2;
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}
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if (index < 0 || num_found > 1) {
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/* this is an erroneous datatype. Let
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ompi_op_is_valid tell the user that */
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op_check_dt = target_datatype;
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} else {
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/* datatype passes muster as far as restrictions
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in MPI-2:6.3.4. Is the primitive ok with the
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op? Unfortunately have to cast away
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constness... */
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op_check_dt = (ompi_datatype_t*)
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ompi_ddt_basicDatatypes[index];
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}
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}
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if (!ompi_op_is_valid(op, op_check_dt, &msg, FUNC_NAME)) {
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int ret = OMPI_ERRHANDLER_INVOKE(win, MPI_ERR_OP, msg);
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free(msg);
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return ret;
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}
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}
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}
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rc = ompi_win->w_osc_module->osc_accumulate(origin_addr,
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origin_count,
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origin_datatype,
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target_rank,
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target_disp,
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target_count,
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target_datatype,
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op, win);
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OMPI_ERRHANDLER_RETURN(rc, win, rc, FUNC_NAME);
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}
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