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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
*
* (C) 2014 by Argonne National Laboratory.
* See COPYRIGHT in top-level directory.
*/
#include <mpi.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
/*
* This test makes sure the MPI_ANY_SOURCE receive operations are handled
* correctly. */
int main(int argc, char **argv)
{
int rank, size, err, ec;
char buf[10];
MPI_Request request;
MPI_Status status;
MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &size);
if (size < 3) {
fprintf(stderr, "Must run with at least 3 processes\n");
MPI_Abort(MPI_COMM_WORLD, 1);
}
MPI_Comm_set_errhandler(MPI_COMM_WORLD, MPI_ERRORS_RETURN);
if (rank == 1) {
exit(EXIT_FAILURE);
}
/* Make sure ANY_SOURCE returns correctly after a failure */
if (rank == 0) {
char buf[10];
err = MPI_Recv(buf, 10, MPI_CHAR, MPI_ANY_SOURCE, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
MPI_Error_class(err, &ec);
if (MPIX_ERR_PROC_FAILED != ec) {
fprintf(stderr, "Expected MPIX_ERR_PROC_FAILED for receive from ANY_SOURCE: %d\n", ec);
MPI_Abort(MPI_COMM_WORLD, 1);
}
/* Make sure that new ANY_SOURCE operations don't work yet */
err = MPI_Irecv(buf, 10, MPI_CHAR, MPI_ANY_SOURCE, 0, MPI_COMM_WORLD, &request);
if (request == MPI_REQUEST_NULL) {
fprintf(stderr, "Request for ANY_SOURCE receive is NULL\n");
MPI_Abort(MPI_COMM_WORLD, 1);
}
MPI_Error_class(err, &ec);
if (ec != MPI_SUCCESS && ec != MPIX_ERR_PROC_FAILED_PENDING) {
fprintf(stderr, "Expected SUCCESS or MPIX_ERR_PROC_FAILED_PENDING: %d\n", ec);
MPI_Abort(MPI_COMM_WORLD, 1);
}
err = MPI_Wait(&request, &status);
MPI_Error_class(err, &ec);
if (MPIX_ERR_PROC_FAILED_PENDING != ec) {
fprintf(stderr,
"Expected a MPIX_ERR_PROC_FAILED_PENDING (%d) for receive from ANY_SOURCE: %d\n",
MPIX_ERR_PROC_FAILED_PENDING, ec);
MPI_Abort(MPI_COMM_WORLD, 1);
}
err = MPI_Send(NULL, 0, MPI_INT, 2, 0, MPI_COMM_WORLD);
if (MPI_SUCCESS != err) {
MPI_Error_class(err, &ec);
fprintf(stderr, "MPI_SEND failed: %d", ec);
MPI_Abort(MPI_COMM_WORLD, 1);
}
/* Make sure that ANY_SOURCE works after failures are acknowledged */
MPIX_Comm_failure_ack(MPI_COMM_WORLD);
err = MPI_Wait(&request, &status);
if (MPI_SUCCESS != err) {
MPI_Error_class(err, &ec);
fprintf(stderr, "Unexpected failure after acknowledged failure (%d)\n", ec);
MPI_Abort(MPI_COMM_WORLD, 1);
}
fprintf(stdout, " %s\n", buf);
} else if (rank == 2) {
char buf[10] = "No errors";
err = MPI_Recv(NULL, 0, MPI_INT, 0, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
if (MPI_SUCCESS != err) {
MPI_Error_class(err, &ec);
fprintf(stderr, "MPI_RECV failed: %d\n", ec);
MPI_Abort(MPI_COMM_WORLD, 1);
}
err = MPI_Send(buf, 10, MPI_CHAR, 0, 0, MPI_COMM_WORLD);
if (MPI_SUCCESS != err) {
MPI_Error_class(err, &ec);
fprintf(stderr, "Unexpected failure from MPI_Send (%d)\n", ec);
MPI_Abort(MPI_COMM_WORLD, 1);
}
}
MPI_Finalize();
}
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