93 строки
3.8 KiB
C
93 строки
3.8 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2012-2013 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) 2012-2013 Inria. All rights reserved.
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* Copyright (c) 2013 Los Alamos National Security, LLC. All rights
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* reserved.
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*
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*/
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#include "ompi_config.h"
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#include "ompi/mpi/c/bindings.h"
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#include "ompi/runtime/params.h"
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#include "ompi/communicator/communicator.h"
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#include "ompi/errhandler/errhandler.h"
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#include "ompi/memchecker.h"
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#include "ompi/mca/topo/topo.h"
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#include "ompi/mca/topo/base/base.h"
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#if OPAL_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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#pragma weak MPI_Dist_graph_create = PMPI_Dist_graph_create
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#endif
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#if OMPI_PROFILING_DEFINES
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#include "ompi/mpi/c/profile/defines.h"
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#endif
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static const char FUNC_NAME[] = "MPI_Dist_graph_create";
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int MPI_Dist_graph_create(MPI_Comm comm_old, int n, const int sources[],
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const int degrees[], const int destinations[], const int weights[],
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MPI_Info info, int reorder, MPI_Comm * newcomm)
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{
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mca_topo_base_module_t* topo;
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int i, j, index, err, comm_size;
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MEMCHECKER(
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memchecker_comm(comm_old);
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);
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if (MPI_PARAM_CHECK) {
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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if (ompi_comm_invalid(comm_old)) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM,
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FUNC_NAME);
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} else if (OMPI_COMM_IS_INTER(comm_old)) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM,
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FUNC_NAME);
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} else if (n < 0 || NULL == newcomm) {
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return OMPI_ERRHANDLER_INVOKE(comm_old, MPI_ERR_ARG, FUNC_NAME);
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} else if (n > 0 && (NULL == sources || NULL == degrees ||
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NULL == destinations || NULL == weights)) {
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return OMPI_ERRHANDLER_INVOKE(comm_old, MPI_ERR_ARG, FUNC_NAME);
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}
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/* Ensure the arrays are full of valid-valued integers */
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comm_size = ompi_comm_size(comm_old);
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for( i = index = 0; i < n; ++i ) {
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if (sources[i] < 0 || sources[i] >= comm_size) {
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return OMPI_ERRHANDLER_INVOKE(comm_old, MPI_ERR_ARG,
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FUNC_NAME);
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} else if (degrees[i] < 0) {
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return OMPI_ERRHANDLER_INVOKE(comm_old, MPI_ERR_ARG,
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FUNC_NAME);
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}
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for( j = 0; j < degrees[i]; ++j ) {
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if (destinations[index] < 0 || destinations[index] >= comm_size) {
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return OMPI_ERRHANDLER_INVOKE(comm_old, MPI_ERR_ARG,
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FUNC_NAME);
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} else if (MPI_UNWEIGHTED != weights && weights[index] < 0) {
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return OMPI_ERRHANDLER_INVOKE(comm_old, MPI_ERR_ARG,
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FUNC_NAME);
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}
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index++;
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}
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}
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}
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/* Ensure there is a topo attached to this communicator */
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if(OMPI_SUCCESS != (err = mca_topo_base_comm_select(comm_old, NULL,
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&topo, OMPI_COMM_DIST_GRAPH))) {
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return OMPI_ERRHANDLER_INVOKE(comm_old, err, FUNC_NAME);
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}
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/* XXX -- CONST -- do not cast away const -- update mca/topo */
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err = topo->topo.dist_graph.dist_graph_create(topo, comm_old, n, (int *) sources, (int *) degrees,
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(int *) destinations, (int *) weights, info,
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reorder, newcomm);
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OMPI_ERRHANDLER_RETURN(err, comm_old, err, FUNC_NAME);
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}
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