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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
/* This test checks that the nemesis code correctly exposes statistics related
* to unexpected receive queue buffer/message sizes.
*
* Originally written by Ralf Gunter Correa Carvalho. */
#include <mpi.h>
#include <assert.h>
#include <string.h>
#include <stdio.h>
#include "mpitest.h"
#define TRY(func) \
do { \
err = (func); \
if (err != MPI_SUCCESS) \
MPI_Abort(MPI_COMM_WORLD, err); \
} while (0)
#define EAGER_SIZE 10
#define RNDV_SIZE 100000
#define STR_LEN 100
int err, rank;
MPI_T_pvar_session session;
MPI_T_pvar_handle uqsize_handle;
/* The first receive will block waiting for the last send, since messages from
* a given rank are received in order. */
static void reversed_tags_test()
{
size_t unexpected_recvq_buffer_size;
if (rank == 0) {
int send_buf[EAGER_SIZE] = { 0x1234 };
MPI_Send(send_buf, EAGER_SIZE, MPI_INT, 1, 0xA, MPI_COMM_WORLD);
MPI_Send(send_buf, EAGER_SIZE, MPI_INT, 1, 0xB, MPI_COMM_WORLD);
MPI_Send(send_buf, EAGER_SIZE, MPI_INT, 1, 0xC, MPI_COMM_WORLD);
MPI_Send(send_buf, EAGER_SIZE, MPI_INT, 1, 0xD, MPI_COMM_WORLD);
} else if (rank == 1) {
int recv_buf[EAGER_SIZE];
MPI_Status status;
MPI_Recv(recv_buf, EAGER_SIZE, MPI_INT, 0, 0xD, MPI_COMM_WORLD, &status);
TRY(MPI_T_pvar_read(session, uqsize_handle, &unexpected_recvq_buffer_size));
assert(unexpected_recvq_buffer_size == 3 * EAGER_SIZE * sizeof(int));
MPI_Recv(recv_buf, EAGER_SIZE, MPI_INT, 0, 0xC, MPI_COMM_WORLD, &status);
TRY(MPI_T_pvar_read(session, uqsize_handle, &unexpected_recvq_buffer_size));
assert(unexpected_recvq_buffer_size == 2 * EAGER_SIZE * sizeof(int));
MPI_Recv(recv_buf, EAGER_SIZE, MPI_INT, 0, 0xB, MPI_COMM_WORLD, &status);
TRY(MPI_T_pvar_read(session, uqsize_handle, &unexpected_recvq_buffer_size));
assert(unexpected_recvq_buffer_size == 1 * EAGER_SIZE * sizeof(int));
MPI_Recv(recv_buf, EAGER_SIZE, MPI_INT, 0, 0xA, MPI_COMM_WORLD, &status);
TRY(MPI_T_pvar_read(session, uqsize_handle, &unexpected_recvq_buffer_size));
assert(unexpected_recvq_buffer_size == 0 * EAGER_SIZE * sizeof(int));
}
MPI_Barrier(MPI_COMM_WORLD); /* make sure this test is over before going to the next one */
}
/* Rendezvous-based messages will never be unexpected (except for the initial RTS,
* which has an empty buffer anyhow).
*/
static void rndv_test()
{
size_t unexpected_recvq_buffer_size;
if (rank == 0) {
int *send_buf = calloc(RNDV_SIZE, sizeof(int));
send_buf[0] = 0x5678;
MPI_Send(send_buf, RNDV_SIZE, MPI_INT, 1, 0, MPI_COMM_WORLD);
MPI_Send(send_buf, RNDV_SIZE, MPI_INT, 1, 0, MPI_COMM_WORLD);
free(send_buf);
} else if (rank == 1) {
int *recv_buf = malloc(RNDV_SIZE * sizeof(int));
MPI_Status status;
MPI_Recv(recv_buf, RNDV_SIZE, MPI_INT, 0, 0, MPI_COMM_WORLD, &status);
TRY(MPI_T_pvar_read(session, uqsize_handle, &unexpected_recvq_buffer_size));
assert(unexpected_recvq_buffer_size == 0);
MPI_Recv(recv_buf, RNDV_SIZE, MPI_INT, 0, 0, MPI_COMM_WORLD, &status);
TRY(MPI_T_pvar_read(session, uqsize_handle, &unexpected_recvq_buffer_size));
assert(unexpected_recvq_buffer_size == 0);
free(recv_buf);
}
MPI_Barrier(MPI_COMM_WORLD); /* make sure this test is over before going to the next one */
}
int main(int argc, char *argv[])
{
int i, size, num, name_len, desc_len, verb, thread_support;
int varclass, bind, readonly, continuous, atomic, uqsize_idx, count;
char name[STR_LEN], desc[STR_LEN];
MPI_Datatype dtype;
MPI_T_enum enumtype;
MPI_Init(NULL, NULL);
MPI_Comm_size(MPI_COMM_WORLD, &size);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
if (rank == 0) {
printf("MPIT pvar test: unexpected_recvq_buffer_size\n");
fflush(stdout);
}
/* Ensure we're using exactly two ranks. */
/* Future tests (using collectives) might need this because of the MPI_Barrier */
assert(size == 2);
/* Standard MPIT initialization. */
TRY(MPI_T_init_thread(MPI_THREAD_SINGLE, &thread_support));
TRY(MPI_T_pvar_get_num(&num));
int found = 0;
/* Locate desired MPIT variable. */
for (i = 0; i < num; i++) {
name_len = desc_len = STR_LEN;
TRY(MPI_T_pvar_get_info(i, name, &name_len, &verb, &varclass, &dtype,
&enumtype, desc, &desc_len, &bind, &readonly,
&continuous, &atomic));
if (strcmp(name, "unexpected_recvq_buffer_size") == 0) {
uqsize_idx = i;
found = 1;
}
}
if (found) {
/* Initialize MPIT session & variable handle. */
MPI_T_pvar_session_create(&session);
MPI_T_pvar_handle_alloc(session, uqsize_idx, NULL, &uqsize_handle, &count);
/* Ensure the variable is of the correct size. */
assert(count == 1);
/* Run a batch of tests. */
reversed_tags_test();
rndv_test();
/* Cleanup. */
MPI_T_pvar_handle_free(session, &uqsize_handle);
MPI_T_pvar_session_free(&session);
}
if (rank == 0) {
printf("finished\n");
fflush(stdout);
}
TRY(MPI_T_finalize());
MPI_Finalize();
return MTestReturnValue(found);
}
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