132 строки
4.8 KiB
C
132 строки
4.8 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2004-2007 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) 2004-2012 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) 2004-2008 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 (c) 2007 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2012-2013 Los Alamos National Security, LLC. All rights
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* reserved.
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* Copyright (c) 2014-2015 Research Organization for Information Science
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* and Technology (RIST). 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/runtime/params.h"
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#include "ompi/communicator/communicator.h"
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#include "ompi/errhandler/errhandler.h"
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#include "ompi/datatype/ompi_datatype.h"
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#include "ompi/memchecker.h"
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#if OPAL_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_Alltoallv = PMPI_Alltoallv
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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_Alltoallv";
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int MPI_Alltoallv(const void *sendbuf, const int sendcounts[],
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const int sdispls[], MPI_Datatype sendtype,
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void *recvbuf, const int recvcounts[], const int rdispls[],
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MPI_Datatype recvtype, MPI_Comm comm)
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{
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int i, size, err;
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MEMCHECKER(
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ptrdiff_t recv_ext;
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ptrdiff_t send_ext;
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if (MPI_IN_PLACE != sendbuf) {
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memchecker_datatype(sendtype);
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ompi_datatype_type_extent(sendtype, &send_ext);
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}
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memchecker_datatype(recvtype);
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ompi_datatype_type_extent(recvtype, &recv_ext);
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memchecker_comm(comm);
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size = OMPI_COMM_IS_INTER(comm)?ompi_comm_remote_size(comm):ompi_comm_size(comm);
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for ( i = 0; i < size; i++ ) {
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if (MPI_IN_PLACE != sendbuf) {
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/* check if send chunks are defined. */
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memchecker_call(&opal_memchecker_base_isdefined,
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(char *)(sendbuf)+sdispls[i]*send_ext,
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sendcounts[i], sendtype);
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}
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/* check if receive chunks are addressable. */
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memchecker_call(&opal_memchecker_base_isaddressable,
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(char *)(recvbuf)+rdispls[i]*recv_ext,
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recvcounts[i], recvtype);
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}
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);
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if (MPI_PARAM_CHECK) {
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/* Unrooted operation -- same checks for all ranks */
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err = MPI_SUCCESS;
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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if (ompi_comm_invalid(comm)) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM,
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FUNC_NAME);
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}
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if (MPI_IN_PLACE == sendbuf) {
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sendcounts = recvcounts;
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sdispls = rdispls;
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sendtype = recvtype;
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}
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if ((NULL == sendcounts) || (NULL == sdispls) ||
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(NULL == recvcounts) || (NULL == rdispls) ||
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MPI_IN_PLACE == recvbuf) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
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}
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size = OMPI_COMM_IS_INTER(comm)?ompi_comm_remote_size(comm):ompi_comm_size(comm);
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for (i = 0; i < size; ++i) {
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OMPI_CHECK_DATATYPE_FOR_SEND(err, sendtype, sendcounts[i]);
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OMPI_ERRHANDLER_CHECK(err, comm, err, FUNC_NAME);
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OMPI_CHECK_DATATYPE_FOR_RECV(err, recvtype, recvcounts[i]);
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OMPI_ERRHANDLER_CHECK(err, comm, err, FUNC_NAME);
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}
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if (MPI_IN_PLACE != sendbuf && !OMPI_COMM_IS_INTER(comm)) {
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size_t sendtype_size, recvtype_size;
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int me = ompi_comm_rank(comm);
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ompi_datatype_type_size(sendtype, &sendtype_size);
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ompi_datatype_type_size(recvtype, &recvtype_size);
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if ((sendtype_size*sendcounts[me]) != (recvtype_size*recvcounts[me])) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_TRUNCATE, FUNC_NAME);
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}
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}
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}
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OPAL_CR_ENTER_LIBRARY();
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/* Invoke the coll component to perform the back-end operation */
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err = comm->c_coll.coll_alltoallv(sendbuf, sendcounts, sdispls, sendtype,
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recvbuf, recvcounts, rdispls, recvtype,
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comm, comm->c_coll.coll_alltoallv_module);
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OMPI_ERRHANDLER_RETURN(err, comm, err, FUNC_NAME);
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}
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