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/*
* 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) 2021 Nanook Consulting. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*
*/
#define _GNU_SOURCE
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include "examples.h"
#include <pmix.h>
static pmix_proc_t myproc;
int main(int argc, char **argv)
{
pmix_status_t rc;
pmix_value_t value;
pmix_value_t *val = &value;
char *tmp;
pmix_proc_t proc;
uint32_t nprocs, n;
pmix_info_t *info;
bool flag;
mylock_t mylock;
myrel_t myrel;
pmix_status_t dbg = PMIX_ERR_DEBUGGER_RELEASE;
pid_t pid;
char hostname[1024];
pid = getpid();
gethostname(hostname, 1024);
fprintf(stderr, "Client %lu: Running on node %s\n", (unsigned long) pid, hostname);
/* init us - note that the call to "init" includes the return of
* any job-related info provided by the RM. This includes any
* debugger flag instructing us to stop-in-init. If such a directive
* is included, then the process will be stopped in this call until
* the "debugger release" notification arrives */
if (PMIX_SUCCESS != (rc = PMIx_Init(&myproc, NULL, 0))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Init failed: %d\n", myproc.nspace, myproc.rank,
rc);
exit(0);
}
fprintf(stderr, "Client ns %s rank %d pid %lu: Running\n", myproc.nspace, myproc.rank,
(unsigned long) pid);
/* job-related info is found in our nspace, assigned to the
* wildcard rank as it doesn't relate to a specific rank. Setup
* a name to retrieve such values */
PMIX_PROC_CONSTRUCT(&proc);
(void) strncpy(proc.nspace, myproc.nspace, PMIX_MAX_NSLEN);
proc.rank = PMIX_RANK_WILDCARD;
/* get our universe size */
if (PMIX_SUCCESS != (rc = PMIx_Get(&proc, PMIX_UNIV_SIZE, NULL, 0, &val))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Get universe size failed: %d\n", myproc.nspace,
myproc.rank, rc);
goto done;
}
PMIX_VALUE_GET_NUMBER(rc, val, n, uint32_t);
fprintf(stderr, "Client %s:%d universe size %u\n", myproc.nspace, myproc.rank, n);
/* get the number of procs in our job - univ size is the total number of allocated
* slots, not the number of procs in the job */
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: %d\n", myproc.nspace,
myproc.rank, rc);
goto done;
}
nprocs = val->data.uint32;
PMIX_VALUE_RELEASE(val);
fprintf(stderr, "Client %s:%d num procs %d\n", myproc.nspace, myproc.rank, nprocs);
if (0 > asprintf(&tmp, "uniq-key")) {
exit(1);
}
if (myproc.rank == 0) {
/* put a few values */
value.type = PMIX_UINT64;
value.data.uint64 = 1234;
if (PMIX_SUCCESS != (rc = PMIx_Put(PMIX_GLOBAL, tmp, &value))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Put internal failed: %d\n", myproc.nspace,
myproc.rank, rc);
goto done;
}
/* push the data to our PMIx server */
if (PMIX_SUCCESS != (rc = PMIx_Commit())) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Commit failed: %d\n", myproc.nspace,
myproc.rank, rc);
goto done;
}
}
/* call fence to synchronize with our peers - instruct
* the fence operation to collect and return all "put"
* data from our peers */
PMIX_INFO_CREATE(info, 1);
flag = true;
PMIX_INFO_LOAD(info, PMIX_COLLECT_DATA, &flag, PMIX_BOOL);
if (PMIX_SUCCESS != (rc = PMIx_Fence(&proc, 1, info, 1))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Fence failed: %d\n", myproc.nspace, myproc.rank,
rc);
goto done;
}
PMIX_INFO_FREE(info, 1);
proc.rank = PMIX_RANK_UNDEF;
rc = PMIx_Get(&proc, tmp, NULL, 0, &val);
if (rc != PMIX_SUCCESS) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Get %s failed: %d\n", myproc.nspace,
myproc.rank, tmp, rc);
goto done;
}
if (PMIX_UINT64 != val->type) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Get %s returned wrong type: %d\n",
myproc.nspace, myproc.rank, tmp, val->type);
PMIX_VALUE_RELEASE(val);
goto done;
}
if (1234 != val->data.uint64) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Get %s returned wrong value: %d\n",
myproc.nspace, myproc.rank, tmp, (int) val->data.uint64);
PMIX_VALUE_RELEASE(val);
goto done;
}
fprintf(stderr, "Client ns %s rank %d: PMIx_Get %s returned correct\n", myproc.nspace,
myproc.rank, tmp);
PMIX_VALUE_RELEASE(val);
done:
free(tmp);
/* finalize us */
fprintf(stderr, "Client ns %s rank %d: Finalizing\n", myproc.nspace, myproc.rank);
if (PMIX_SUCCESS != (rc = PMIx_Finalize(NULL, 0))) {
fprintf(stderr, "Client ns %s rank %d:PMIx_Finalize failed: %d\n", myproc.nspace,
myproc.rank, rc);
} else {
fprintf(stderr, "Client ns %s rank %d:PMIx_Finalize successfully completed\n",
myproc.nspace, myproc.rank);
}
fflush(stderr);
return (0);
}
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