44 строки
1.4 KiB
C
44 строки
1.4 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) 2004-2006 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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* $COPYRIGHT$
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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/datatype.h"
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#include "coll_self.h"
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/*
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* reduce_scatter
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*
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* Function: - reduce then scatter
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* Accepts: - same as MPI_Reduce_scatter()
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* Returns: - MPI_SUCCESS or error code
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*/
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int mca_coll_self_reduce_scatter_intra(void *sbuf, void *rbuf, int *rcounts,
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struct ompi_datatype_t *dtype,
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struct ompi_op_t *op,
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struct ompi_communicator_t *comm)
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{
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if (MPI_IN_PLACE == sbuf) {
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return MPI_SUCCESS;
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} else {
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return ompi_ddt_copy_content_same_ddt(dtype, rcounts[0], (char*)rbuf, (char*)sbuf);
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}
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}
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