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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpi.h"
#include "mpitest.h"
/*
static char MTEST_Descrip[] = "Test that persistent collectives can be started out of matching order";
*/
int main(int argc, char **argv)
{
int errs = 0;
MTest_Init(&argc, &argv);
int size, rank;
MPI_Comm_size(MPI_COMM_WORLD, &size);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
if (size < 2) {
fprintf(stderr, "This test requires at least two processes.");
MPI_Abort(MPI_COMM_WORLD, 1);
}
int a = -1;
MPI_Request requests[2];
MPI_Bcast_init(&a, 1, MPI_INT, 0, MPI_COMM_WORLD, MPI_INFO_NULL, &requests[0]);
MPI_Barrier_init(MPI_COMM_WORLD, MPI_INFO_NULL, &requests[1]);
if (rank == 0) {
a = 42;
MPI_Start(&requests[0]);
MPI_Start(&requests[1]);
} else {
MPI_Start(&requests[1]);
MPI_Start(&requests[0]);
}
MPI_Waitall(2, requests, MPI_STATUSES_IGNORE);
if (a != 42) {
errs++;
}
MPI_Request_free(&requests[0]);
MPI_Request_free(&requests[1]);
MTest_Finalize(errs);
return MTestReturnValue(errs);
}
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