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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>
#include "mpitest.h"
/*
* This test checks if a non-blocking collective failing impacts the result
* of another operation going on at the same time.
*/
int main(int argc, char **argv)
{
int rank, size;
int err;
int excl;
MPI_Comm small_comm;
MPI_Group orig_grp, small_grp;
MPI_Request req;
MPI_Status status;
MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &size);
MPI_Comm_set_errhandler(MPI_COMM_WORLD, MPI_ERRORS_RETURN);
MPI_Comm_group(MPI_COMM_WORLD, &orig_grp);
MPI_Group_size(orig_grp, &excl);
excl--;
MPI_Group_excl(orig_grp, 1, &excl, &small_grp);
MPI_Comm_create_group(MPI_COMM_WORLD, small_grp, 0, &small_comm);
MPI_Group_free(&orig_grp);
MPI_Group_free(&small_grp);
if (size < 4) {
fprintf(stderr, "Must run with at least 2 processes\n");
MPI_Abort(MPI_COMM_WORLD, 1);
}
if (rank == excl) {
exit(EXIT_FAILURE);
}
MPI_Ibarrier(MPI_COMM_WORLD, &req);
err = MPI_Barrier(small_comm);
if (err != MPI_SUCCESS) {
int ec;
MPI_Error_class(err, &ec);
fprintf(stderr, "Result != MPI_SUCCESS: %d\n", ec);
MPI_Abort(MPI_COMM_WORLD, 1);
}
err = MPI_Wait(&req, &status);
if (err == MPI_SUCCESS) {
int ec, ec2;
MPI_Error_class(err, &ec);
MPI_Error_class(status.MPI_ERROR, &ec2);
fprintf(stderr, "Result != MPIX_ERR_PROC_FAILED: %d Status: %d\n", ec, ec2);
MPI_Abort(MPI_COMM_WORLD, 1);
}
MPI_Comm_free(&small_comm);
if (rank == 0) {
printf(" No Errors\n");
fflush(stdout);
}
MPI_Finalize();
return MTestReturnValue(err);
}
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