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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include <mpi.h>
#include <stdio.h>
#include <stdlib.h>
/*
* This test makes sure that after a failure, the correct group of failed
* processes is returned from MPIX_Comm_failure_ack/get_acked.
*/
int main(int argc, char **argv)
{
int rank, size, err, result, i;
char buf[10] = " No errors";
char error[MPI_MAX_ERROR_STRING];
MPI_Group failed_grp, one_grp, world_grp;
int one[] = { 1 };
int world_ranks[] = { 0, 1, 2 };
int failed_ranks[3];
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);
}
if (rank == 0) {
err = MPI_Recv(buf, 10, MPI_CHAR, 1, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
if (MPI_SUCCESS == err) {
fprintf(stderr, "Expected a failure for receive from rank 1\n");
MPI_Abort(MPI_COMM_WORLD, 1);
}
err = MPIX_Comm_failure_ack(MPI_COMM_WORLD);
if (MPI_SUCCESS != err) {
int ec;
MPI_Error_class(err, &ec);
MPI_Error_string(err, error, &size);
fprintf(stderr, "MPIX_Comm_failure_ack returned an error: %d\n%s", ec, error);
MPI_Abort(MPI_COMM_WORLD, 1);
}
err = MPIX_Comm_failure_get_acked(MPI_COMM_WORLD, &failed_grp);
if (MPI_SUCCESS != err) {
int ec;
MPI_Error_class(err, &ec);
MPI_Error_string(err, error, &size);
fprintf(stderr, "MPIX_Comm_failure_get_acked returned an error: %d\n%s", ec, error);
MPI_Abort(MPI_COMM_WORLD, 1);
}
MPI_Comm_group(MPI_COMM_WORLD, &world_grp);
MPI_Group_incl(world_grp, 1, one, &one_grp);
MPI_Group_compare(one_grp, failed_grp, &result);
if (MPI_IDENT != result) {
fprintf(stderr, "First failed group contains incorrect processes\n");
MPI_Group_size(failed_grp, &size);
MPI_Group_translate_ranks(failed_grp, size, world_ranks, world_grp, failed_ranks);
for (i = 0; i < size; i++)
fprintf(stderr, "DEAD: %d\n", failed_ranks[i]);
MPI_Abort(MPI_COMM_WORLD, 1);
}
MPI_Group_free(&failed_grp);
err = MPI_Recv(buf, 10, MPI_CHAR, 2, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
if (MPI_SUCCESS != err) {
fprintf(stderr, "First receive failed\n");
MPI_Abort(MPI_COMM_WORLD, 1);
}
err = MPI_Recv(buf, 10, MPI_CHAR, 2, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
if (MPI_SUCCESS == err) {
fprintf(stderr, "Expected a failure for receive from rank 2\n");
MPI_Abort(MPI_COMM_WORLD, 1);
}
err = MPIX_Comm_failure_get_acked(MPI_COMM_WORLD, &failed_grp);
if (MPI_SUCCESS != err) {
int ec;
MPI_Error_class(err, &ec);
MPI_Error_string(err, error, &size);
fprintf(stderr, "MPIX_Comm_failure_get_acked returned an error: %d\n%s", ec, error);
MPI_Abort(MPI_COMM_WORLD, 1);
}
MPI_Group_compare(one_grp, failed_grp, &result);
if (MPI_IDENT != result) {
fprintf(stderr, "Second failed group contains incorrect processes\n");
MPI_Group_size(failed_grp, &size);
MPI_Group_translate_ranks(failed_grp, size, world_ranks, world_grp, failed_ranks);
for (i = 0; i < size; i++)
fprintf(stderr, "DEAD: %d\n", failed_ranks[i]);
MPI_Abort(MPI_COMM_WORLD, 1);
}
fprintf(stdout, " No errors\n");
} else if (rank == 2) {
MPI_Ssend(buf, 10, MPI_CHAR, 0, 0, MPI_COMM_WORLD);
exit(EXIT_FAILURE);
}
MPI_Group_free(&failed_grp);
MPI_Group_free(&one_grp);
MPI_Group_free(&world_grp);
MPI_Finalize();
}
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