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/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2013 FUJITSU LIMITED. All rights reserved.
* Copyright (c) 2015 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "ompi/constants.h"
#include "ompi/datatype/ompi_datatype.h"
#include "coll_self.h"
/*
* alltoallw_intra
*
* Function: - MPI_Alltoallw
* Accepts: - same as MPI_Alltoallw()
* Returns: - MPI_SUCCESS or an MPI error code
*/
int mca_coll_self_alltoallw_intra(const void *sbuf, const int *scounts, const int *sdisps,
struct ompi_datatype_t * const *sdtypes,
void *rbuf, const int *rcounts, const int *rdisps,
struct ompi_datatype_t * const *rdtypes,
struct ompi_communicator_t *comm,
mca_coll_base_module_t *module)
{
int err;
ptrdiff_t lb, rextent, sextent;
if (MPI_IN_PLACE == sbuf) {
return MPI_SUCCESS;
}
err = ompi_datatype_get_extent(sdtypes[0], &lb, &sextent);
if (OMPI_SUCCESS != err) {
return OMPI_ERROR;
}
err = ompi_datatype_get_extent(rdtypes[0], &lb, &rextent);
if (OMPI_SUCCESS != err) {
return OMPI_ERROR;
}
return ompi_datatype_sndrcv(((char *) sbuf) + sdisps[0] * sextent,
scounts[0], sdtypes[0],
((char *) rbuf) + rdisps[0] * rextent,
rcounts[0], rdtypes[0]);
}
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