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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 communication between 2 running processes
* after another process has failed. The communication should complete
* successfully.
*/
int main(int argc, char **argv)
{
int rank, size, errs, toterrs = 0;
char buf[10];
MPI_Request request;
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 < 4) {
fprintf(stderr, "Must run with at least 4 processes\n");
MPI_Abort(MPI_COMM_WORLD, 1);
}
if (rank == 1) {
exit(EXIT_FAILURE);
}
if (rank == 0) {
errs = MPI_Issend("No Errors", 10, MPI_CHAR, 3, 0, MPI_COMM_WORLD, &request);
errs += MPI_Wait(&request, MPI_STATUS_IGNORE);
if (errs) {
toterrs += errs;
fprintf(stderr, "An error occurred during the send operation\n");
}
}
if (rank == 3) {
errs = MPI_Irecv(buf, 10, MPI_CHAR, 0, 0, MPI_COMM_WORLD, &request);
errs += MPI_Wait(&request, MPI_STATUS_IGNORE);
if (errs) {
toterrs += errs;
fprintf(stderr, "An error occurred during the recv operation\n");
}
}
if (rank == 3) {
exit(EXIT_FAILURE);
}
if (rank == 0) {
errs = MPI_Issend("No Errors", 10, MPI_CHAR, 2, 0, MPI_COMM_WORLD, &request);
errs += MPI_Wait(&request, MPI_STATUS_IGNORE);
if (errs) {
toterrs += errs;
fprintf(stderr, "An error occurred during the send operation\n");
}
}
if (rank == 2) {
errs = MPI_Irecv(buf, 10, MPI_CHAR, 0, 0, MPI_COMM_WORLD, &request);
errs += MPI_Wait(&request, MPI_STATUS_IGNORE);
if (errs) {
toterrs += errs;
fprintf(stderr, "An error occurred during the recv operation\n");
} else {
printf(" %s\n", buf);
fflush(stdout);
}
}
if (rank == 2) {
exit(EXIT_FAILURE);
}
MPI_Finalize();
return MTestReturnValue(toterrs);
}
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