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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
*
* (C) 2003 by Argonne National Laboratory.
* See COPYRIGHT in top-level directory.
*/
#include "mpi.h"
#include <stdio.h>
#include <stdlib.h>
/*
* This test attempts collective communication after a process in
* the communicator has failed. Since all processes contribute to
* the result of the operation, all process will receive an error.
*/
int main(int argc, char **argv)
{
int rank, size, err, errclass;
int sendbuf[1] = { 42 };
int *recvbuf;
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);
if (size < 3) {
fprintf(stderr, "Must run with at least 3 processes\n");
MPI_Abort(MPI_COMM_WORLD, 1);
}
if (rank == 1) {
exit(EXIT_FAILURE);
}
recvbuf = (int *) malloc(size * sizeof(int));
err = MPI_Gather(sendbuf, 1, MPI_INT, recvbuf, size, MPI_INT, 0, MPI_COMM_WORLD);
if (rank == 0) {
#if defined (MPICH) && (MPICH_NUMVERSION >= 30100102)
MPI_Error_class(err, &errclass);
if (errclass == MPIX_ERR_PROC_FAILED) {
printf(" No Errors\n");
fflush(stdout);
}
else {
fprintf(stderr, "Wrong error code (%d) returned. Expected MPIX_ERR_PROC_FAILED\n",
errclass);
}
#else
if (err) {
printf(" No Errors\n");
fflush(stdout);
}
else {
fprintf(stderr, "Program reported MPI_SUCCESS, but an error code was expected.\n");
}
#endif
}
free(recvbuf);
MPI_Finalize();
return 0;
}
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