37 строки
884 B
C
37 строки
884 B
C
/* -*- C -*-
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*
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* $HEADER$
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*
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* The most basic of MPI applications
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*/
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#include <stdio.h>
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#include "opal/mca/hwloc/base/base.h"
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#include "mpi.h"
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#include "orte/util/proc_info.h"
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int main(int argc, char* argv[])
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{
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int rank, size, rc;
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hwloc_cpuset_t cpus;
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char *bindings = NULL;
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MPI_Init(&argc, &argv);
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MPI_Comm_rank(MPI_COMM_WORLD, &rank);
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MPI_Comm_size(MPI_COMM_WORLD, &size);
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if (OPAL_SUCCESS == opal_hwloc_base_get_topology()) {
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cpus = hwloc_bitmap_alloc();
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rc = hwloc_get_cpubind(opal_hwloc_topology, cpus, HWLOC_CPUBIND_PROCESS);
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hwloc_bitmap_list_asprintf(&bindings, cpus);
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}
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printf("Hello, World, I am %d of %d [%d local peers]: get_cpubind: %d bitmap %s\n",
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rank, size, orte_process_info.num_local_peers, rc,
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(NULL == bindings) ? "NULL" : bindings);
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MPI_Finalize();
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return 0;
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}
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