79 строки
2.0 KiB
C
79 строки
2.0 KiB
C
/*
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* Copyright (c) 2011 Los Alamos National Security, LLC.
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* All rights reserved.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "pmi.h"
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/* NOTES
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*
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* useful debug environment variables:
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* PMI_DEBUG
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*/
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int main(int argc, char **argv, char **envp)
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{
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int pmi_rank = -1;
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int pmi_process_group_size = -1;
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int num_local_procs = 0;
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int *local_rank_ids = NULL;
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int spawned = PMI_FALSE;
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int rc = EXIT_SUCCESS;
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char *err = NULL;
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PMI_BOOL pmi_initialized = PMI_FALSE;
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/* sanity */
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if (PMI_SUCCESS != PMI_Initialized(&pmi_initialized) ||
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PMI_TRUE == pmi_initialized) {
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fprintf(stderr, "=== ERROR: PMI sanity failure\n");
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return EXIT_FAILURE;
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}
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if (PMI_SUCCESS != PMI_Init(&spawned)) {
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err = "PMI_Init failure!";
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goto done;
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}
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if (PMI_SUCCESS != PMI_Get_size(&pmi_process_group_size)) {
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err = "PMI_Get_size failure!";
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goto done;
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}
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if (PMI_SUCCESS != PMI_Get_rank(&pmi_rank)) {
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err = "PMI_Get_rank failure!";
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goto done;
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}
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if (PMI_SUCCESS != PMI_Get_clique_size(&num_local_procs)) {
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err = "PMI_Get_clique_size failure!";
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goto done;
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}
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if (NULL == (local_rank_ids = calloc(num_local_procs, sizeof(int)))) {
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err = "out of resources";
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goto done;
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}
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if (PMI_SUCCESS != PMI_Get_clique_ranks(local_rank_ids, num_local_procs)) {
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err = "PMI_Get_clique_size failure!";
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goto done;
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}
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/* lowest local rank will print env info and tag its output*/
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if (pmi_rank == local_rank_ids[0]) {
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for (; NULL != envp && NULL != *envp; ++envp) {
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printf("===[%d]: %s\n", pmi_rank, *envp);
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}
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}
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done:
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if (PMI_TRUE == pmi_initialized) {
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if (PMI_SUCCESS != PMI_Finalize()) {
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err = "PMI_Finalize failure!";
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}
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}
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if (NULL != err) {
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fprintf(stderr, "=== ERROR [rank:%d] %s\n", pmi_rank, err);
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rc = EXIT_FAILURE;
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}
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return rc;
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}
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