41 строка
1014 B
C
41 строка
1014 B
C
/* -*- C -*-
|
|
*
|
|
* $HEADER$
|
|
*
|
|
* The most basic of MPI applications
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include "opal/mca/hwloc/base/base.h"
|
|
#include "mpi.h"
|
|
|
|
#include "orte/util/proc_info.h"
|
|
|
|
int main(int argc, char* argv[])
|
|
{
|
|
int rank, size, rc;
|
|
hwloc_cpuset_t cpus;
|
|
char *bindings = NULL;
|
|
pid_t pid;
|
|
|
|
MPI_Init(&argc, &argv);
|
|
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
|
|
MPI_Comm_size(MPI_COMM_WORLD, &size);
|
|
pid = getpid();
|
|
|
|
printf("[%lu] Rank %d: getting topology\n", (unsigned long)pid, rank);
|
|
fflush(stdout);
|
|
if (OPAL_SUCCESS == opal_hwloc_base_get_topology()) {
|
|
cpus = hwloc_bitmap_alloc();
|
|
rc = hwloc_get_cpubind(opal_hwloc_topology, cpus, HWLOC_CPUBIND_PROCESS);
|
|
hwloc_bitmap_list_asprintf(&bindings, cpus);
|
|
}
|
|
|
|
printf("Hello, World, I am %d of %d [%d local peers]: get_cpubind: %d bitmap %s\n",
|
|
rank, size, orte_process_info.num_local_peers, rc,
|
|
(NULL == bindings) ? "NULL" : bindings);
|
|
|
|
MPI_Finalize();
|
|
return 0;
|
|
}
|