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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) 2013-2019 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 <unistd.h>
#include <pmix.h>
static pmix_proc_t myproc;
int main(int argc, char **argv)
{
pmix_status_t rc;
pid_t pid;
char hostname[1024];
pmix_value_t *val;
uint16_t localrank;
size_t n;
pmix_info_t optional;
pid = getpid();
gethostname(hostname, 1024);
/* 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 */
rc = PMIx_Init(&myproc, NULL, 0);
if (PMIX_SUCCESS != rc && PMIX_ERR_UNREACH != rc) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Init failed: %s\n",
myproc.nspace, myproc.rank, PMIx_Error_string(rc));
exit(0);
}
/* get our local rank */
if (PMIX_SUCCESS != (rc = PMIx_Get(&myproc, PMIX_LOCAL_RANK, NULL, 0, &val))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Get local rank failed: %s\n",
myproc.nspace, myproc.rank, PMIx_Error_string(rc));
goto done;
}
localrank = val->data.uint16;
PMIX_VALUE_RELEASE(val);
fprintf(stderr, "Client ns %s rank %d pid %lu: Running on host %s localrank %d\n",
myproc.nspace, myproc.rank, (unsigned long)pid, hostname , (int)localrank);
pmix_proc_t wild;
PMIX_LOAD_PROCID(&wild, myproc.nspace, PMIX_RANK_WILDCARD);
rc = PMIx_Get(&wild, PMIX_LOCAL_PEERS, NULL, 0, &val);
if (PMIX_SUCCESS != rc) {
fprintf(stderr, "Unable to get local peers\n");
} else {
fprintf(stderr, "%s:%u - local peers %s\n", myproc.nspace, myproc.rank, val->data.string);
}
PMIX_LOAD_PROCID(&wild, myproc.nspace, PMIX_RANK_WILDCARD);
PMIX_INFO_LOAD(&optional, PMIX_OPTIONAL, NULL, PMIX_BOOL);
rc = PMIx_Get(&wild, PMIX_NODE_OVERSUBSCRIBED, &optional, 1, &val);
if (PMIX_SUCCESS != rc) {
fprintf(stderr, "Not oversubscribed\n");
} else {
fprintf(stderr, "%s:%u - oversubscribed\n", myproc.nspace, myproc.rank);
}
done:
/* finalize us */
if (PMIX_SUCCESS != (rc = PMIx_Finalize(NULL, 0))) {
fprintf(stderr, "Client ns %s rank %d:PMIx_Finalize failed: %s\n",
myproc.nspace, myproc.rank, PMIx_Error_string(rc));
}
fflush(stderr);
return(0);
}
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