dadca7da88
This merge adds Checkpoint/Restart support to Open MPI. The initial frameworks and components support a LAM/MPI-like implementation. This commit follows the risk assessment presented to the Open MPI core development group on Feb. 22, 2007. This commit closes trac:158 More details to follow. This commit was SVN r14051. The following SVN revisions from the original message are invalid or inconsistent and therefore were not cross-referenced: r13912 The following Trac tickets were found above: Ticket 158 --> https://svn.open-mpi.org/trac/ompi/ticket/158
98 строки
3.1 KiB
C
98 строки
3.1 KiB
C
/*
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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) 2004-2005 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/datatype/datatype.h"
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#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_Allgatherv = PMPI_Allgatherv
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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_Allgatherv";
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int MPI_Allgatherv(void *sendbuf, int sendcount, MPI_Datatype sendtype,
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void *recvbuf, int *recvcounts,
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int *displs, MPI_Datatype recvtype, MPI_Comm comm)
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{
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int i, size, err;
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OPAL_CR_TEST_CHECKPOINT_READY();
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if (MPI_PARAM_CHECK) {
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/* Unrooted operation -- same checks for all ranks on both
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intracommunicators and intercommunicators */
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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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} else if (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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if (MPI_IN_PLACE != sendbuf) {
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OMPI_CHECK_DATATYPE_FOR_SEND(err, sendtype, sendcount);
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}
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OMPI_ERRHANDLER_CHECK(err, comm, err, FUNC_NAME);
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size = ompi_comm_size(comm);
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for (i = 0; i < size; ++i) {
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if (recvcounts[i] < 0) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COUNT, FUNC_NAME);
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} else if (MPI_DATATYPE_NULL == recvtype) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_TYPE, FUNC_NAME);
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}
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}
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if (NULL == displs) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_BUFFER, FUNC_NAME);
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}
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}
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/* Do we need to do anything? Everyone had to give the same
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signature, which means that everyone must have given a
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sum(recvounts) > 0 if there's anything to do. */
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for (i = 0; i < ompi_comm_size(comm); ++i) {
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if (0 != recvcounts[i]) {
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break;
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}
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}
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if (i >= ompi_comm_size(comm)) {
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return MPI_SUCCESS;
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}
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/* Invoke the coll component to perform the back-end operation */
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err = comm->c_coll.coll_allgatherv(sendbuf, sendcount, sendtype,
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recvbuf, recvcounts,
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displs, recvtype, comm);
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OMPI_ERRHANDLER_RETURN(err, comm, err, FUNC_NAME);
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}
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