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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.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "ompi/constants.h"
#include "ompi/datatype/datatype.h"
#include "coll_self.h"
/*
* alltoallv_intra
*
* Function: - MPI_Alltoallv
* Accepts: - same as MPI_Alltoallv()
* Returns: - MPI_SUCCESS or an MPI error code
*/
int
mca_coll_self_alltoallv_intra(void *sbuf, int *scounts, int *sdisps,
struct ompi_datatype_t *sdtype,
void *rbuf, int *rcounts, int *rdisps,
struct ompi_datatype_t *rdtype,
struct ompi_communicator_t *comm)
{
int err;
ptrdiff_t lb, rextent, sextent;
err = ompi_ddt_get_extent(sdtype, &lb, &sextent);
if (OMPI_SUCCESS != err) {
return OMPI_ERROR;
}
err = ompi_ddt_get_extent(rdtype, &lb, &rextent);
if (OMPI_SUCCESS != err) {
return OMPI_ERROR;
}
return ompi_ddt_sndrcv(((char *) sbuf) + sdisps[0] * sextent,
scounts[0], sdtype,
((char *) rbuf) + rdisps[0] * rextent,
rcounts[0], rdtype);
}
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