55 строки
1.9 KiB
C
55 строки
1.9 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) 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 "coll_self.h"
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#include "ompi/datatype/ompi_datatype.h"
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/*
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* scatterv_intra
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*
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* Function: - scatterv
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* Accepts: - same arguments as MPI_Scatter()
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* Returns: - MPI_SUCCESS or error code
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*/
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int mca_coll_self_scatterv_intra(const void *sbuf, const int *scounts,
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const int *disps, struct ompi_datatype_t *sdtype,
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void *rbuf, int rcount,
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struct ompi_datatype_t *rdtype, int root,
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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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if (MPI_IN_PLACE == rbuf) {
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return MPI_SUCCESS;
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} else {
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int err;
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ptrdiff_t lb, extent;
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err = ompi_datatype_get_extent(sdtype, &lb, &extent);
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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) + disps[0]*extent, scounts[0],
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sdtype, rbuf, rcount, rdtype);
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}
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}
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