64 строки
2.2 KiB
C
64 строки
2.2 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 (c) 2013 FUJITSU LIMITED. All rights reserved.
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* Copyright (c) 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 "ompi/constants.h"
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#include "ompi/datatype/ompi_datatype.h"
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#include "coll_self.h"
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/*
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* alltoallw_intra
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*
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* Function: - MPI_Alltoallw
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* Accepts: - same as MPI_Alltoallw()
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* Returns: - MPI_SUCCESS or an MPI error code
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*/
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int mca_coll_self_alltoallw_intra(const void *sbuf, const int *scounts, const int *sdisps,
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struct ompi_datatype_t * const *sdtypes,
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void *rbuf, const int *rcounts, const int *rdisps,
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struct ompi_datatype_t * const *rdtypes,
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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 err;
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ptrdiff_t lb, rextent, sextent;
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if (MPI_IN_PLACE == sbuf) {
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return MPI_SUCCESS;
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}
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err = ompi_datatype_get_extent(sdtypes[0], &lb, &sextent);
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if (OMPI_SUCCESS != err) {
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return OMPI_ERROR;
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}
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err = ompi_datatype_get_extent(rdtypes[0], &lb, &rextent);
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if (OMPI_SUCCESS != err) {
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return OMPI_ERROR;
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}
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return ompi_datatype_sndrcv(((char *) sbuf) + sdisps[0] * sextent,
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scounts[0], sdtypes[0],
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((char *) rbuf) + rdisps[0] * rextent,
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rcounts[0], rdtypes[0]);
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}
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