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#include <pmix.h>
#include <sched.h>
#include <stdio.h>
static pmix_proc_t allproc = PMIX_PROC_STATIC_INIT;
static pmix_proc_t myproc = PMIX_PROC_STATIC_INIT;
static pmix_proc_t * all_procs = NULL;
static bool mywait = false;
static bool refresh = false;
static bool timeout = false;
static bool group = false;
static uint32_t nprocs;
static 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);
fprintf(stdout, "%s:%d PMIx_Put on %s with value %s\n", myproc.nspace, myproc.rank, key, (char*) data);
return 0;
}
static int pmi_get_string(uint32_t peer_rank, const char *key,
void **data_out, size_t *data_size_out, bool retry)
{
int rc;
pmix_proc_t proc;
pmix_value_t *pvalue;
pmix_info_t info;
PMIX_LOAD_PROCID(&proc, myproc.nspace, peer_rank);
if (refresh && retry) {
PMIX_INFO_LOAD(&info, PMIX_GET_REFRESH_CACHE, &refresh, PMIX_BOOL);
rc = PMIx_Get(&proc, key, &info, 1, &pvalue);
PMIX_INFO_DESTRUCT(&info);
} else if (timeout) {
rc = 2;
PMIX_INFO_LOAD(&info, PMIX_TIMEOUT, &rc, PMIX_INT);
rc = PMIx_Get(&proc, key, &info, 1, &pvalue);
PMIX_INFO_DESTRUCT(&info);
} else {
rc = PMIx_Get(&proc, key, NULL, 0, &pvalue);
}
if (PMIX_SUCCESS != rc) {
fprintf(stderr, "ERROR: Client ns %s rank %d: PMIx_Get on rank %u %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);
}
*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);
fprintf(stdout, "%s:%d PMIx_get %s returned %zi bytes (value %s)\n", myproc.nspace, myproc.rank, key,
data_size_out[0], (char*) *data_out);
return 0;
}
static int pmix_exchange(bool flag)
{
int rc;
pmix_info_t info;
fprintf(stderr, "Execute fence\n");
PMIX_INFO_CONSTRUCT(&info);
PMIX_INFO_LOAD(&info, PMIX_COLLECT_DATA, &flag, PMIX_BOOL);
if (all_procs) {
/* Array with procs (group case)*/
rc = PMIx_Fence(all_procs, nprocs, &info, 1);
} else {
/* Rank wildcard */
rc = PMIx_Fence(&allproc, 1, &info, 1);
}
if (PMIX_SUCCESS != rc) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Fence_nb failed: %d\n", myproc.nspace,
myproc.rank, rc);
exit(1);
}
PMIX_INFO_DESTRUCT(&info);
return 0;
}
static int pmix_create_group(void) {
pmix_status_t rc = PMIX_SUCCESS;
bool assign_context_id = true;
pmix_info_t * directives = NULL;
pmix_info_t *results = NULL;
size_t ndirs = 2;
size_t nresults = 0;
int group_timeout = 10;
PMIX_PROC_CREATE(all_procs, nprocs);
for (size_t i = 0; i < nprocs; i++) {
PMIX_PROC_LOAD(&(all_procs[i]), myproc.nspace, i);
}
fprintf(stdout, "Client ns %s rank %d: Group construction...\n", myproc.nspace,
myproc.rank);
PMIX_INFO_CREATE(directives, ndirs);
PMIX_INFO_LOAD(&(directives[0]), PMIX_GROUP_ASSIGN_CONTEXT_ID, &assign_context_id, PMIX_BOOL);
PMIX_INFO_LOAD(&(directives[1]), PMIX_TIMEOUT, &group_timeout, PMIX_INT);
if (PMIX_SUCCESS != (rc = PMIx_Group_construct("mygroup", all_procs, nprocs, directives, ndirs,
&results, &nresults))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Group_construct failed: %s\n", myproc.nspace,
myproc.rank, PMIx_Error_string(rc));
return rc;
}
for (size_t k = 0; k < nresults; k++) {
fprintf(stdout, "%s-%d: %s\n", myproc.nspace, myproc.rank, PMIx_Info_string(&results[k]));
}
if (directives != NULL) {
PMIX_INFO_FREE(directives, ndirs);
}
if (results != NULL) {
PMIX_INFO_FREE(results, nresults);
}
return rc;
}
static int pmix_destruct_group(void) {
pmix_status_t rc = PMIX_SUCCESS;
size_t ndirs = 1;
pmix_info_t * directives = NULL;
PMIX_INFO_CREATE(directives, ndirs);
PMIX_INFO_LOAD(&(directives[0]), PMIX_TIMEOUT, &timeout, PMIX_INT);
if (PMIX_SUCCESS != (rc = PMIx_Group_destruct("mygroup", directives, ndirs))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Group_destruct failed: %s\n", myproc.nspace,
myproc.rank, PMIx_Error_string(rc));
}
if (directives != NULL) {
PMIX_INFO_FREE(directives, ndirs);
}
return rc;
}
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--wait Test PMIX_GET_WAIT_FOR_KEY\n");
fprintf(stderr, "\t--refresh Test PMIX_GET_REFRESH_CACHE\n");
fprintf(stderr, "\t--timeout Test PMIX_GET_WAIT_FOR_KEY, but timeout\n");
fprintf(stderr, "\t--group Test PMIX_GET_REFRESH_CACHE and PMIx Process Group\n");
exit(0);
}
if (0 == strncmp(argv[1], "--w", 3)) {
mywait = true;
} else if (0 == strncmp(argv[1], "--r", 3)) {
refresh = true;
} else if (0 == strncmp(argv[1], "--t", 3)) {
timeout = true;
} else if (0 == strncmp(argv[1], "--g", 3)) {
group = true;
refresh = true;
} else {
fprintf(stderr, "Invalid cmd line option: %s\n", argv[1]);
fprintf(stderr, "Usage:\n");
fprintf(stderr, "\t--wait Test PMIX_GET_WAIT_FOR_KEY\n");
fprintf(stderr, "\t--refresh Test PMIX_GET_REFRESH_CACHE\n");
fprintf(stderr, "\t--timeout Test PMIX_GET_WAIT_FOR_KEY, but timeout\n");
fprintf(stderr, "\t--group Test PMIX_GET_REFRESH_CACHE and PMIx Process Group\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");
}
memset(data, 0, 256);
/* 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);
}
nprocs = pvalue->data.uint32;
PMIX_VALUE_RELEASE(pvalue);
/* Each rank puts a unique key-value pair in the KVS */
sprintf(data, "ORIG rank %d", myproc.rank);
if (0 == myproc.rank) {
pmi_set_string("test-key-0", data, 256);
} else {
pmi_set_string("test-key-1", data, 256);
}
pmix_exchange(true);
if (1 == myproc.rank) {
if (timeout) {
sleep(10);
} else if (mywait) {
sleep(2);
}
}
/* Each rank gets the key-value pair that was put by the other rank */
if (0 == myproc.rank) {
rc = pmi_get_string(1, "test-key-1", (void **) &data_out, &size_out, false);
if (0 != rc) {
goto done;
}
fprintf(stdout, "%d: obtained data for test-key-1 \"%s\"\n", myproc.rank, data_out);
} else {
rc = pmi_get_string(0, "test-key-0", (void **) &data_out, &size_out, false);
if (0 != rc) {
goto done;
}
fprintf(stdout, "%d: obtained data for test-key-0 \"%s\"\n", myproc.rank, data_out);
}
/* Create a group */
if (group) {
rc = pmix_create_group();
if (rc != PMIX_SUCCESS) {
exit(1);
}
}
/* Each rank attempts to overwrite the value that was previously put */
sprintf(data, "OVERWRITE rank %d", myproc.rank);
if (0 == myproc.rank) {
pmi_set_string("test-key-0", data, 256);
} else {
pmi_set_string("test-key-1", data, 256);
}
pmix_exchange(true);
if (1 == myproc.rank) {
if (timeout) {
sleep(10);
} else if (mywait) {
sleep(2);
}
}
/* Each rank gets the value put by the other rank
* If overwrite was successful, each rank should get the new value here */
if (0 == myproc.rank) {
rc = pmi_get_string(1, "test-key-1", (void **) &data_out, &size_out, true);
if (0 != rc) {
goto done;
}
fprintf(stdout, "%d: obtained data for test-key-1 \"%s\"\n", myproc.rank, data_out);
} else {
rc = pmi_get_string(0, "test-key-0", (void **) &data_out, &size_out, true);
if (0 != rc) {
goto done;
}
fprintf(stdout, "%d: obtained data for test-key-0 \"%s\"\n", myproc.rank, data_out);
}
/* Destroy group*/
if (group) {
rc = pmix_destruct_group();
if (rc != PMIX_SUCCESS) {
exit(1);
}
}
done:
if (all_procs != NULL) {
PMIX_PROC_FREE(all_procs, nprocs);
}
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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