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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) 2021-2022 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 *val;
pmix_proc_t proc;
uint32_t nprocs;
char *nodelist, **nodes, *hostname;
pmix_info_t info[2];
EXAMPLES_HIDE_UNUSED_PARAMS(argc, argv);
/* 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: %s\n",
myproc.nspace, myproc.rank, PMIx_Error_string(rc));
exit(0);
}
fprintf(stderr, "Client ns %s rank %d: Running\n", myproc.nspace, myproc.rank);
/* 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);
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);
fprintf(stderr, "Client %s:%d job size %d\n", myproc.nspace, myproc.rank, nprocs);
/* get the list of nodes being used */
if (PMIX_SUCCESS != (rc = PMIx_Get(&proc, PMIX_NODE_LIST, NULL, 0, &val))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Get node list failed: %s\n",
myproc.nspace, myproc.rank, PMIx_Error_string(rc));
goto done;
}
nodelist = strdup(val->data.string);
if (0 == myproc.rank) {
fprintf(stderr, "Client ns %s rank %d: Host list %s\n",
myproc.nspace, myproc.rank, val->data.string);
}
PMIX_VALUE_RELEASE(val);
PMIX_ARGV_SPLIT(nodes, nodelist, ',');
free(nodelist);
if (NULL == nodes) {
goto done;
}
/* get some node-specific info */
if (1 < nprocs) {
proc.rank = myproc.rank + 1;
if (nprocs == proc.rank) {
proc.rank = 0;
}
if (PMIX_SUCCESS != (rc = PMIx_Get(&proc, PMIX_HOSTNAME, NULL, 0, &val))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Get hostname for rank %u failed: %s\n",
myproc.nspace, myproc.rank, proc.rank, PMIx_Error_string(rc));
goto done;
}
fprintf(stderr, "Client ns %s rank %d: Rank %u is on host %s\n",
myproc.nspace, myproc.rank, proc.rank, val->data.string);
hostname = strdup(val->data.string);
PMIX_VALUE_RELEASE(val);
if (PMIX_SUCCESS != (rc = PMIx_Get(&proc, PMIX_FABRIC_COORDINATES, NULL, 0, &val))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Get coordinates for rank %u failed: %s\n",
myproc.nspace, myproc.rank, proc.rank, PMIx_Error_string(rc));
} else {
fprintf(stderr, "Client ns %s rank %d: Rank %u has coordinates\n %s\n",
myproc.nspace, myproc.rank, proc.rank, PMIx_Value_string(val));
PMIX_VALUE_RELEASE(val);
}
// try with directive
proc.rank = PMIX_RANK_WILDCARD;
PMIX_INFO_LOAD(&info[0], PMIX_NODE_INFO, NULL, PMIX_BOOL);
PMIX_INFO_LOAD(&info[1], PMIX_HOSTNAME, hostname, PMIX_STRING);
if (PMIX_SUCCESS != (rc = PMIx_Get(&proc, PMIX_FABRIC_COORDINATES, info, 2, &val))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Get coordinates with directive for host %s failed: %s\n",
myproc.nspace, myproc.rank, hostname, PMIx_Error_string(rc));
goto done;
}
fprintf(stderr, "Client ns %s rank %d: Host %s has coordinates\n %s\n",
myproc.nspace, myproc.rank, hostname, PMIx_Value_string(val));
PMIX_VALUE_RELEASE(val);
}
done:
/* 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: %s\n", myproc.nspace,
myproc.rank, PMIx_Error_string(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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