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openmpi/ompi/mca/topo/base/topo_base_graphdims_get.c
2015-06-23 20:59:57 -07:00

49 строки
1.7 KiB
C

/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2013 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 (c) 2012-2013 Inria. All rights reserved.
* Copyright (c) 2014 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "ompi/mca/topo/base/base.h"
#include "ompi/communicator/communicator.h"
/*
* function - Retrieves graph topology information associated with a
* communicator
*
* @param comm - communicator for group with graph structure (handle)
* @param nodes - number of nodes in graph (integer)
* @param nedges - number of edges in graph (integer)
*
* @retval MPI_SUCCESS
* @retval MPI_ERR_TOPOLOGY
* @retval MPI_ERR_COMM
* @retval MPI_ERR_ARG
*/
int mca_topo_base_graphdims_get (ompi_communicator_t* comm,
int *nodes,
int *nedges)
{
mca_topo_base_comm_graph_2_2_0_t* graph = comm->c_topo->mtc.graph;
*nodes = ompi_comm_size(comm);
*nedges = graph->index[*nodes -1];
return MPI_SUCCESS;
}