49 строки
1.7 KiB
C
49 строки
1.7 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) 2004-2013 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) 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) 2012-2013 Inria. All rights reserved.
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* Copyright (c) 2014 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/mca/topo/base/base.h"
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#include "ompi/communicator/communicator.h"
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/*
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* function - Retrieves graph topology information associated with a
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* communicator
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*
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* @param comm - communicator for group with graph structure (handle)
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* @param nodes - number of nodes in graph (integer)
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* @param nedges - number of edges in graph (integer)
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*
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* @retval MPI_SUCCESS
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* @retval MPI_ERR_TOPOLOGY
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* @retval MPI_ERR_COMM
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* @retval MPI_ERR_ARG
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*/
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int mca_topo_base_graphdims_get (ompi_communicator_t* comm,
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int *nodes,
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int *nedges)
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{
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mca_topo_base_comm_graph_2_2_0_t* graph = comm->c_topo->mtc.graph;
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*nodes = ompi_comm_size(comm);
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*nedges = graph->index[*nodes -1];
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return MPI_SUCCESS;
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}
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