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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include <stdio.h>
#include "mpi.h"
#include "mpitest.h"
/*
* This program checks that MPI_Irecv and MPI_Recv correctly handle
* a source of MPI_PROC_NULL
*/
int main(int argc, char **argv)
{
int flag;
int errs = 0;
MPI_Status status;
MPI_Request req;
MTest_Init(&argc, &argv);
MPI_Irecv(NULL, 0, MPI_DATATYPE_NULL, MPI_PROC_NULL, 10, MPI_COMM_WORLD, &req);
MPI_Waitall(1, &req, &status);
if (status.MPI_SOURCE != MPI_PROC_NULL) {
printf("Status.MPI_SOURCE was %d, should be MPI_PROC_NULL\n", status.MPI_SOURCE);
errs++;
}
if (status.MPI_TAG != MPI_ANY_TAG) {
printf("Status.MPI_TAG was %d, should be MPI_ANY_TAGL\n", status.MPI_TAG);
errs++;
}
/* If Irecv failed, Recv is likely to as well. Avoid a possible hang
* by testing Recv only if Irecv test passed */
if (errs == 0) {
MPI_Recv(NULL, 0, MPI_DATATYPE_NULL, MPI_PROC_NULL, 10, MPI_COMM_WORLD, &status);
if (status.MPI_SOURCE != MPI_PROC_NULL) {
printf("Status.MPI_SOURCE was %d, should be MPI_PROC_NULL\n", status.MPI_SOURCE);
errs++;
}
if (status.MPI_TAG != MPI_ANY_TAG) {
printf("Status.MPI_TAG was %d, should be MPI_ANY_TAGL\n", status.MPI_TAG);
errs++;
}
}
MTest_Finalize(errs);
return MTestReturnValue(errs);
}
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