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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 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[1];
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);
}
err = MPI_Reduce(sendbuf, recvbuf, 1, MPI_INT, MPI_SUM, 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
}
MPI_Finalize();
return MTestReturnValue(err);
}
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