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#include <pmix.h>
#include <sched.h>
#include <stdio.h>
static pmix_proc_t allproc = {};
static pmix_proc_t myproc = {};
static bool immediate = false;
static bool shouldfind = false;
int pmi_set_string(const char *key, void *data, size_t size)
{
int rc;
pmix_value_t value;
PMIX_VALUE_CONSTRUCT(&value);
value.type = PMIX_BYTE_OBJECT;
value.data.bo.bytes = data;
value.data.bo.size = size;
if (PMIX_SUCCESS != (rc = PMIx_Put(PMIX_GLOBAL, key, &value))) {
fprintf(stderr, "ERROR: Client ns %s rank %d: PMIx_Put failed: %s\n", myproc.nspace, myproc.rank,
PMIx_Error_string(rc));
}
if (PMIX_SUCCESS != (rc = PMIx_Commit())) {
fprintf(stderr, "ERROR: Client ns %s rank %d: PMIx_Commit failed: %s\n", myproc.nspace, myproc.rank,
PMIx_Error_string(rc));
}
/* protect the data */
value.data.bo.bytes = NULL;
value.data.bo.size = 0;
PMIX_VALUE_DESTRUCT(&value);
printf("%s:%d PMIx_Put on %s\n", myproc.nspace, myproc.rank, key);
return 0;
}
int pmi_get_string(uint32_t peer_rank, const char *key, void **data_out, size_t *data_size_out)
{
int rc;
pmix_proc_t proc;
pmix_value_t *pvalue;
pmix_info_t info;
PMIX_LOAD_PROCID(&proc, myproc.nspace, peer_rank);
if (immediate) {
PMIX_INFO_LOAD(&info, PMIX_IMMEDIATE, NULL, PMIX_BOOL);
} else {
PMIX_INFO_LOAD(&info, PMIX_OPTIONAL, NULL, PMIX_BOOL);
}
rc = PMIx_Get(&proc, key, &info, 1, &pvalue);
PMIX_INFO_DESTRUCT(&info);
if (immediate) {
/* both ranks should find data */
shouldfind = true;
} else {
/* if it is optional, then neither rank will find it */
shouldfind = false;
}
if (shouldfind) {
if (PMIX_SUCCESS != rc) {
fprintf(stderr, "ERROR: Client ns %s rank %d: PMIx_Get on rank %u did not find %s: %s\n", myproc.nspace, myproc.rank,
peer_rank, key, PMIx_Error_string(rc));
return rc;
}
if (pvalue->type != PMIX_BYTE_OBJECT) {
fprintf(stderr, "ERROR: Client ns %s rank %d: PMIx_Get %s: got wrong data type\n", myproc.nspace, myproc.rank,
key);
return rc;
}
*data_out = pvalue->data.bo.bytes;
*data_size_out = pvalue->data.bo.size;
/* protect the data */
pvalue->data.bo.bytes = NULL;
pvalue->data.bo.size = 0;
PMIX_VALUE_RELEASE(pvalue);
PMIX_PROC_DESTRUCT(&proc);
printf("%s:%d PMIx_get %s returned %zi bytes\n", myproc.nspace, myproc.rank, key,
data_size_out[0]);
} else {
if (PMIX_SUCCESS == rc) {
fprintf(stderr, "ERROR: Client ns %s rank %d: PMIx_Get on rank %u found %s: %s\n", myproc.nspace, myproc.rank,
peer_rank, key, PMIx_Error_string(rc));
}
*data_out = strdup("NOT-FOUND");
*data_size_out = strlen(*data_out);
}
return 0;
}
int main(int argc, char *argv[])
{
char data[256] = {};
char *data_out;
size_t size_out;
int rc;
pmix_value_t *pvalue;
/* check the args */
if (1 < argc) {
if (2 < argc || 0 == strncmp(argv[1], "-h", 2) || 0 == strncmp(argv[1], "--h", 3)) {
fprintf(stderr, "Usage:\n");
fprintf(stderr, "\t--immediate Test PMIX_IMMEDIATE\n");
exit(0);
}
if (0 == strncmp(argv[1], "--i", 3)) {
immediate = true;
} else {
fprintf(stderr, "Invalid cmd line option: %s\n", argv[1]);
fprintf(stderr, "Usage:\n");
fprintf(stderr, "\t--immediate Test PMIX_IMMEDIATE\n");
exit(1);
}
}
if (PMIX_SUCCESS != (rc = PMIx_Init(&myproc, NULL, 0))) {
fprintf(stderr, "ERROR: PMIx_Init failed");
exit(1);
}
if (myproc.rank == 0) {
printf("PMIx initialized\n");
}
/* 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_LOAD_PROCID(&allproc, myproc.nspace, PMIX_RANK_WILDCARD);
/* get the number of procs in our job */
if (PMIX_SUCCESS != (rc = PMIx_Get(&allproc, PMIX_JOB_SIZE, NULL, 0, &pvalue))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Get job size failed: %d\n", myproc.nspace,
myproc.rank, rc);
exit(1);
}
uint32_t nprocs = pvalue->data.uint32;
PMIX_VALUE_RELEASE(pvalue);
/* each proc pushes some data */
if (immediate || 0 == myproc.rank) {
if (0 == myproc.rank) {
pmi_set_string("test-key-1", data, 256);
} else {
pmi_set_string("test-key-2", data, 256);
}
}
sleep(2);
if (0 == myproc.rank) {
rc = pmi_get_string(1, "test-key-2", (void **) &data_out, &size_out);
} else {
rc = pmi_get_string(0, "test-key-1", (void **) &data_out, &size_out);
}
if (0 == rc) {
printf("%d: obtained data \"%s\"\n", myproc.rank, data_out);
}
if (PMIX_SUCCESS != (rc = PMIx_Finalize(NULL, 0))) {
fprintf(stderr, "ERROR: Client ns %s rank %d:PMIx_Finalize failed: %d\n", myproc.nspace, myproc.rank, rc);
}
if (myproc.rank == 0)
printf("PMIx finalized\n");
exit(0);
}
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