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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpi.h"
#include <stdio.h>
#include "mpitest.h"
/* Checks message matching with multiple partitioned calls.
*
* It checks three types of matching scenarios:
* - same comm same tag: matches in program order of initialization calls
* - same comm different tags: matches based on tags
* - different comms: matches based on comms */
#define PARTITIONS 8
#define COUNT 64
#define TOT_COUNT (PARTITIONS * COUNT)
/* Internal variables */
static int bufs[3][TOT_COUNT];
static int rank, size;
/* Internal utility routines */
static void fill_data(int seed, int *buf)
{
for (int i = 0; i < TOT_COUNT; i++)
buf[i] = seed;
}
static int check_recv_buf(int seed, int *buf)
{
int errs = 0;
for (int i = 0; i < TOT_COUNT; i++) {
if (buf[i] != seed) {
if (errs < 10) {
fprintf(stderr, "expected %d but received %d at buf[%d]\n", seed, buf[i], i);
fflush(stderr);
}
errs++;
}
}
return errs;
}
static int check_recv_stat(int source, int tag, MPI_Status stat)
{
int errs = 0;
if (stat.MPI_SOURCE != source) {
fprintf(stderr, "expected status.MPI_SOURCE %d, but received %d\n",
source, stat.MPI_SOURCE);
fflush(stderr);
errs++;
}
if (stat.MPI_TAG != tag) {
fprintf(stderr, "expected status.MPI_TAG %d, but received %d\n", tag, stat.MPI_TAG);
fflush(stderr);
errs++;
}
if (stat.MPI_ERROR != MPI_SUCCESS) {
fprintf(stderr, "expected status.MPI_ERROR %d, but received %d\n",
MPI_SUCCESS, stat.MPI_ERROR);
fflush(stderr);
errs++;
}
return errs;
}
static void start_sends(MPI_Request * reqs, MPI_Status * stats)
{
MPI_Start(&reqs[0]);
fill_data(1, bufs[0]);
MPI_Pready_range(0, PARTITIONS - 1, reqs[0]);
MPI_Start(&reqs[1]);
fill_data(2, bufs[1]);
MPI_Pready_range(0, PARTITIONS - 1, reqs[1]);
MPI_Start(&reqs[2]);
fill_data(3, bufs[2]);
MPI_Pready_range(0, PARTITIONS - 1, reqs[2]);
MPI_Waitall(3, reqs, stats);
}
static void start_recvs(MPI_Request * reqs, MPI_Status * stats)
{
fill_data(-1, bufs[0]);
MPI_Start(&reqs[0]);
fill_data(-1, bufs[1]);
MPI_Start(&reqs[1]);
fill_data(-1, bufs[2]);
MPI_Start(&reqs[2]);
MPI_Waitall(3, reqs, stats);
}
static int check_recv_results(MPI_Status * stats, int *exp_sources, int *exp_tags)
{
int errs = 0;
errs += check_recv_buf(1, bufs[0]);
errs += check_recv_buf(2, bufs[1]);
errs += check_recv_buf(3, bufs[2]);
errs += check_recv_stat(exp_sources[0], exp_tags[0], stats[0]);
errs += check_recv_stat(exp_sources[1], exp_tags[1], stats[1]);
errs += check_recv_stat(exp_sources[2], exp_tags[2], stats[2]);
return errs;
}
/* Test routines for different scenarios */
static int test_diff_comm(void)
{
int errs = 0;
MPI_Request reqs[3];
MPI_Status stats[3];
int source = 0, dest = size - 1;
MPI_Comm comms[3];
for (int i = 0; i < 3; i++) {
MPI_Comm_dup(MPI_COMM_WORLD, &comms[i]);
}
if (rank == source) {
MTestPrintfMsg(1, "Testing partitioned message matching with different comm same tag\n");
/* Perform initialization with different tags.
* Expect message should match following tags. */
MPI_Psend_init(bufs[2], PARTITIONS, COUNT, MPI_INT, dest, 0,
comms[2], MPI_INFO_NULL, &reqs[2]);
MPI_Psend_init(bufs[1], PARTITIONS, COUNT, MPI_INT, dest, 0,
comms[1], MPI_INFO_NULL, &reqs[1]);
MPI_Psend_init(bufs[0], PARTITIONS, COUNT, MPI_INT, dest, 0,
comms[0], MPI_INFO_NULL, &reqs[0]);
start_sends(reqs, stats); /* start sends in the order of 0,1,2 */
} else if (rank == dest) {
MPI_Precv_init(bufs[0], PARTITIONS, COUNT, MPI_INT, source, 0,
comms[0], MPI_INFO_NULL, &reqs[0]);
MPI_Precv_init(bufs[1], PARTITIONS, COUNT, MPI_INT, source, 0,
comms[1], MPI_INFO_NULL, &reqs[1]);
MPI_Precv_init(bufs[2], PARTITIONS, COUNT, MPI_INT, source, 0,
comms[2], MPI_INFO_NULL, &reqs[2]);
start_recvs(reqs, stats); /* start receives in the order of 0,1,2 */
int exp_sources[3] = { source, source, source };
int exp_tags[3] = { 0, 0, 0 };
errs = check_recv_results(stats, exp_sources, exp_tags);
}
if (rank == source || rank == dest) {
for (int i = 0; i < 3; i++) {
MPI_Request_free(&reqs[i]);
}
}
for (int i = 0; i < 3; i++) {
MPI_Comm_free(&comms[i]);
}
return errs;
}
static int test_same_comm_diff_tag(void)
{
int errs = 0;
MPI_Request reqs[3];
MPI_Status stats[3];
int source = 0, dest = size - 1;
if (rank == source) {
MTestPrintfMsg(1, "Testing partitioned message matching with same comm different tag\n");
/* Perform initialization with different tags.
* Expect message should match following tags. */
MPI_Psend_init(bufs[2], PARTITIONS, COUNT, MPI_INT, dest, 2,
MPI_COMM_WORLD, MPI_INFO_NULL, &reqs[2]);
MPI_Psend_init(bufs[1], PARTITIONS, COUNT, MPI_INT, dest, 1,
MPI_COMM_WORLD, MPI_INFO_NULL, &reqs[1]);
MPI_Psend_init(bufs[0], PARTITIONS, COUNT, MPI_INT, dest, 0,
MPI_COMM_WORLD, MPI_INFO_NULL, &reqs[0]);
start_sends(reqs, stats); /* start sends in the order of 0,1,2 */
} else if (rank == dest) {
MPI_Precv_init(bufs[0], PARTITIONS, COUNT, MPI_INT, source, 0,
MPI_COMM_WORLD, MPI_INFO_NULL, &reqs[0]);
MPI_Precv_init(bufs[1], PARTITIONS, COUNT, MPI_INT, source, 1,
MPI_COMM_WORLD, MPI_INFO_NULL, &reqs[1]);
MPI_Precv_init(bufs[2], PARTITIONS, COUNT, MPI_INT, source, 2,
MPI_COMM_WORLD, MPI_INFO_NULL, &reqs[2]);
start_recvs(reqs, stats); /* start receives in the order of 0,1,2 */
int exp_sources[3] = { source, source, source };
int exp_tags[3] = { 0, 1, 2 };
errs = check_recv_results(stats, exp_sources, exp_tags);
}
if (rank == source || rank == dest) {
for (int i = 0; i < 3; i++) {
MPI_Request_free(&reqs[i]);
}
}
return errs;
}
static int test_same_comm_same_tag(void)
{
int errs = 0;
MPI_Request reqs[3];
MPI_Status stats[3];
int source = 0, dest = size - 1;
if (rank == source) {
MTestPrintfMsg(1, "Testing partitioned message matching with same comm same tag\n");
/* Perform initialization and start/pready in different order.
* Expect message should match following the order of initialization calls. */
MPI_Psend_init(bufs[0], PARTITIONS, COUNT, MPI_INT, dest, 0,
MPI_COMM_WORLD, MPI_INFO_NULL, &reqs[0]);
MPI_Psend_init(bufs[1], PARTITIONS, COUNT, MPI_INT, dest, 0,
MPI_COMM_WORLD, MPI_INFO_NULL, &reqs[1]);
MPI_Psend_init(bufs[2], PARTITIONS, COUNT, MPI_INT, dest, 0,
MPI_COMM_WORLD, MPI_INFO_NULL, &reqs[2]);
MPI_Start(&reqs[2]);
fill_data(3, bufs[2]);
MPI_Pready_range(0, PARTITIONS - 1, reqs[2]);
MPI_Start(&reqs[0]);
fill_data(1, bufs[0]);
MPI_Pready_range(0, PARTITIONS - 1, reqs[0]);
MPI_Start(&reqs[1]);
fill_data(2, bufs[1]);
MPI_Pready_range(0, PARTITIONS - 1, reqs[1]);
MPI_Waitall(3, reqs, stats);
} else if (rank == dest) {
MPI_Precv_init(bufs[0], PARTITIONS, COUNT, MPI_INT, source, 0,
MPI_COMM_WORLD, MPI_INFO_NULL, &reqs[0]);
MPI_Precv_init(bufs[1], PARTITIONS, COUNT, MPI_INT, source, 0,
MPI_COMM_WORLD, MPI_INFO_NULL, &reqs[1]);
MPI_Precv_init(bufs[2], PARTITIONS, COUNT, MPI_INT, source, 0,
MPI_COMM_WORLD, MPI_INFO_NULL, &reqs[2]);
start_recvs(reqs, stats); /* start receives in the order of 0,1,2 */
int exp_sources[3] = { source, source, source };
int exp_tags[3] = { 0, 0, 0 };
errs = check_recv_results(stats, exp_sources, exp_tags);
}
if (rank == source || rank == dest) {
for (int i = 0; i < 3; i++) {
MPI_Request_free(&reqs[i]);
}
}
return errs;
}
int main(int argc, char *argv[])
{
int errs = 0;
MTest_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &size);
errs += test_same_comm_same_tag();
errs += test_same_comm_diff_tag();
errs += test_diff_comm();
MTest_Finalize(errs);
return MTestReturnValue(errs);
}
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