1e2019ce2a
This reverts commit cb55c88a8b
.
151 строка
4.8 KiB
C
151 строка
4.8 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) 2004-2014 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 (c) 2006-2010 University of Houston. All rights reserved.
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* Copyright (c) 2015-2016 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 "coll_inter.h"
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#include "mpi.h"
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#include "ompi/datatype/ompi_datatype.h"
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#include "ompi/request/request.h"
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#include "ompi/communicator/communicator.h"
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#include "ompi/constants.h"
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#include "ompi/mca/coll/coll.h"
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#include "ompi/mca/coll/base/coll_tags.h"
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#include "ompi/mca/pml/pml.h"
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/*
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* allgatherv_inter
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*
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* Function: - allgatherv using other MPI collectives
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* Accepts: - same as MPI_Allgatherv()
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* Returns: - MPI_SUCCESS or error code
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*/
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int
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mca_coll_inter_allgatherv_inter(const void *sbuf, int scount,
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struct ompi_datatype_t *sdtype,
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void *rbuf, const int *rcounts, const int *disps,
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struct ompi_datatype_t *rdtype,
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struct ompi_communicator_t *comm,
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mca_coll_base_module_t *module)
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{
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int i, rank, size, size_local, total=0, err;
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int *count=NULL,*displace=NULL;
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char *ptmp_free=NULL, *ptmp=NULL;
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ompi_datatype_t *ndtype = NULL;
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ompi_request_t *req[2];
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rank = ompi_comm_rank(comm);
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size_local = ompi_comm_size(comm->c_local_comm);
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size = ompi_comm_remote_size(comm);
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if (0 == rank) {
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count = (int *)malloc(sizeof(int) * size_local);
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displace = (int *)malloc(sizeof(int) * size_local);
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if ((NULL == count) || (NULL == displace)) {
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err = OMPI_ERR_OUT_OF_RESOURCE;
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goto exit;
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}
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}
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/* Local gather to get the scount of each process */
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err = comm->c_local_comm->c_coll.coll_gather(&scount, 1, MPI_INT,
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count, 1, MPI_INT,
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0, comm->c_local_comm,
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comm->c_local_comm->c_coll.coll_gather_module);
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if (OMPI_SUCCESS != err) {
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goto exit;
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}
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if(0 == rank) {
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displace[0] = 0;
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for (i = 1; i < size_local; i++) {
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displace[i] = displace[i-1] + count[i-1];
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}
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total = 0;
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for (i = 0; i < size_local; i++) {
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total = total + count[i];
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}
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if ( total > 0 ) {
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ptrdiff_t gap, span;
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span = opal_datatype_span(&sdtype->super, total, &gap);
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ptmp_free = (char*)malloc(span);
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if (NULL == ptmp_free) {
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err = OMPI_ERR_OUT_OF_RESOURCE;
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goto exit;
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}
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ptmp = ptmp_free - gap;
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}
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}
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err = comm->c_local_comm->c_coll.coll_gatherv(sbuf, scount, sdtype,
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ptmp, count, displace,
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sdtype,0, comm->c_local_comm,
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comm->c_local_comm->c_coll.coll_gatherv_module);
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if (OMPI_SUCCESS != err) {
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goto exit;
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}
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ompi_datatype_create_indexed(size,rcounts,disps,rdtype,&ndtype);
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ompi_datatype_commit(&ndtype);
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if (0 == rank) {
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/* Exchange data between roots */
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err = MCA_PML_CALL(irecv(rbuf, 1, ndtype, 0,
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MCA_COLL_BASE_TAG_ALLGATHERV, comm,
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&(req[0])));
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if (OMPI_SUCCESS != err) {
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goto exit;
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}
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err = MCA_PML_CALL(isend(ptmp, total, sdtype, 0,
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MCA_COLL_BASE_TAG_ALLGATHERV,
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MCA_PML_BASE_SEND_STANDARD,
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comm, &(req[1])));
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if (OMPI_SUCCESS != err) {
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goto exit;
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}
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err = ompi_request_wait_all(2, req, MPI_STATUSES_IGNORE);
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if (OMPI_SUCCESS != err) {
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goto exit;
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}
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}
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/* bcast the message to all the local processes */
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err = comm->c_local_comm->c_coll.coll_bcast(rbuf, 1, ndtype,
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0, comm->c_local_comm,
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comm->c_local_comm->c_coll.coll_bcast_module);
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exit:
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if( NULL != ndtype ) {
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ompi_datatype_destroy(&ndtype);
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}
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if (NULL != ptmp_free) {
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free(ptmp_free);
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}
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if (NULL != displace) {
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free(displace);
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}
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if (NULL != count) {
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free(count);
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}
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return err;
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}
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