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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpi.h"
#include <stdio.h>
#include "mpitest.h"
/*
static char MTEST_Descrip[] = "Test to confirm MPI_PREADY does not block";
*/
int main(int argc, char *argv[])
{
int errs = 0;
MTest_Init(&argc, &argv);
int size;
int 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\n");
MPI_Abort(MPI_COMM_WORLD, 1);
}
int a;
MPI_Request request;
if (rank == 0) {
MPI_Psend_init(&a, 1, 1, MPI_INT, 1, 0, MPI_COMM_WORLD, MPI_INFO_NULL, &request);
MPI_Start(&request);
MPI_Pready(0, request);
MPI_Send(NULL, 0, MPI_DATATYPE_NULL, 1, 0, MPI_COMM_WORLD);
MPI_Wait(&request, MPI_STATUS_IGNORE);
} else if (rank == 1) {
MPI_Precv_init(&a, 1, 1, MPI_INT, 0, 0, MPI_COMM_WORLD, MPI_INFO_NULL, &request);
MPI_Recv(NULL, 0, MPI_DATATYPE_NULL, 0, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
MPI_Start(&request);
MPI_Wait(&request, MPI_STATUS_IGNORE);
}
if (rank < 2) {
MPI_Request_free(&request);
}
MTest_Finalize(errs);
return MTestReturnValue(errs);
}
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