/*
* Copyright (c) 2004-2010 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2011 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) 2006-2013 Los Alamos National Security, LLC.
* All rights reserved.
* Copyright (c) 2009-2012 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2011 Oak Ridge National Labs. All rights reserved.
* Copyright (c) 2013-2020 Intel, Inc. All rights reserved.
* Copyright (c) 2015 Mellanox Technologies, Inc. All rights reserved.
* Copyright (c) 2019 IBM Corporation. All rights reserved.
* Copyright (c) 2021-2025 Nanook Consulting All rights reserved.
* Copyright (c) 2024 Triad National Security, LLC. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*
*/
#define _GNU_SOURCE
#include <pthread.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <libgen.h>
#include <unistd.h>
#include <pmix.h>
int main(int argc, char **argv)
{
pmix_proc_t myproc;
int rc, ret;
pmix_value_t *val = NULL, value;
pmix_proc_t proc, *procs, *parray;
uint32_t nprocs;
pmix_info_t *results, info[3];
size_t nresults, cid = 0, n, m, psize;
char *tmp;
/* init us */
if (PMIX_SUCCESS != (rc = PMIx_Init(&myproc, NULL, 0))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Init failed: %s\n", myproc.nspace, myproc.rank,
PMIx_Error_string(rc));
exit(1);
}
fprintf(stderr, "Client ns %s rank %d: Running\n", myproc.nspace, myproc.rank);
PMIX_PROC_CONSTRUCT(&proc);
PMIX_LOAD_PROCID(&proc, myproc.nspace, PMIX_RANK_WILDCARD);
/* get our job size */
if (PMIX_SUCCESS != (rc = PMIx_Get(&proc, PMIX_JOB_SIZE, NULL, 0, &val))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Get job size failed: %s\n", myproc.nspace,
myproc.rank, PMIx_Error_string(rc));
goto done;
}
nprocs = val->data.uint32;
PMIX_VALUE_RELEASE(val);
if (nprocs < 4) {
if (0 == myproc.rank) {
fprintf(stderr, "This example requires a minimum of 4 processes\n");
}
exit(1);
}
fprintf(stderr, "Client %s:%d job size %d\n", myproc.nspace, myproc.rank, nprocs);
if (0 > asprintf(&tmp, "%s-%d-local", myproc.nspace, myproc.rank)) {
exit(1);
}
value.type = PMIX_UINT64;
value.data.uint64 = 1234;
if (PMIX_SUCCESS != (rc = PMIx_Put(PMIX_LOCAL, tmp, &value))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Put internal failed: %s\n", myproc.nspace,
myproc.rank, PMIx_Error_string(rc));
goto done;
}
free(tmp);
if (0 > asprintf(&tmp, "%s-%d-remote", myproc.nspace, myproc.rank)) {
exit(1);
}
value.type = PMIX_STRING;
value.data.string = "1234";
if (PMIX_SUCCESS != (rc = PMIx_Put(PMIX_REMOTE, tmp, &value))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Put internal failed: %s\n", myproc.nspace,
myproc.rank, PMIx_Error_string(rc));
goto done;
}
free(tmp);
/* push the data to our PMIx server */
if (PMIX_SUCCESS != (rc = PMIx_Commit())) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Commit failed: %s\n", myproc.nspace,
myproc.rank, PMIx_Error_string(rc));
goto done;
}
/* call fence to sync */
PMIX_PROC_CONSTRUCT(&proc);
PMIX_LOAD_PROCID(&proc, myproc.nspace, PMIX_RANK_WILDCARD);
if (PMIX_SUCCESS != (rc = PMIx_Fence(&proc, 1, NULL, 0))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Fence failed: %d\n", myproc.nspace, myproc.rank,
rc);
goto done;
}
/* rank=0,2,3 construct a new group */
if (0 == myproc.rank || 2 == myproc.rank || 3 == myproc.rank) {
fprintf(stderr, "%d executing Group_construct\n", myproc.rank);
nprocs = 3;
PMIX_PROC_CREATE(procs, nprocs);
PMIX_PROC_LOAD(&procs[0], myproc.nspace, 0);
PMIX_PROC_LOAD(&procs[1], myproc.nspace, 2);
PMIX_PROC_LOAD(&procs[2], myproc.nspace, 3);
PMIX_INFO_LOAD(&info[0], PMIX_GROUP_ASSIGN_CONTEXT_ID, NULL, PMIX_BOOL);
rc = PMIx_Group_construct("ourgroup", procs, nprocs, info, 1, &results, &nresults);
if (PMIX_SUCCESS != rc) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Group_construct failed: %s\n",
myproc.nspace, myproc.rank, PMIx_Error_string(rc));
goto done;
}
/* we should have a single results object */
if (NULL != results) {
cid = 0;
for (n=0; n < nresults; n++) {
if (PMIX_CHECK_KEY(&results[n], PMIX_GROUP_CONTEXT_ID)) {
PMIX_VALUE_GET_NUMBER(rc, &results[n].value, cid, size_t);
fprintf(stderr, "%d Group construct complete with status %s KEY %s CID %lu\n",
myproc.rank, PMIx_Error_string(rc), results[n].key, (unsigned long) cid);
} else if (PMIX_CHECK_KEY(&results[n], PMIX_GROUP_MEMBERSHIP)) {
parray = (pmix_proc_t*)results[n].value.data.darray->array;
psize = results[n].value.data.darray->size;
if (0 == myproc.rank) {
fprintf(stderr, "NUM MEMBERS: %u MEMBERSHIP:\n", (unsigned)psize);
for (m=0; m < psize; m++) {
fprintf(stderr, "\t%s:%u\n", parray[m].nspace, parray[m].rank);
}
}
}
}
PMIX_INFO_FREE(results, nresults);
} else {
fprintf(stderr, "%d Group construct complete, but results returned\n", myproc.rank);
}
PMIX_PROC_FREE(procs, nprocs);
fprintf(stderr, "%d executing Group_destruct\n", myproc.rank);
rc = PMIx_Group_destruct("ourgroup", NULL, 0);
if (PMIX_SUCCESS != rc) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Group_destruct failed: %s\n", myproc.nspace,
myproc.rank, PMIx_Error_string(rc));
}
}
done:
/* finalize us */
fprintf(stderr, "Client ns %s rank %d: Finalizing\n", myproc.nspace, myproc.rank);
if (PMIX_SUCCESS != (ret = PMIx_Finalize(NULL, 0))) {
fprintf(stderr, "Client ns %s rank %d:PMIx_Finalize failed: %s\n", myproc.nspace,
myproc.rank, PMIx_Error_string(ret));
rc = ret;
} else {
fprintf(stderr, "Client ns %s rank %d:PMIx_Finalize successfully completed\n",
myproc.nspace, myproc.rank);
}
fprintf(stderr, "%s:%d COMPLETE\n", myproc.nspace, myproc.rank);
fflush(stderr);
return (rc);
}