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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
/*
* This program checks the semantics of persistent synchronous send
*/
#include "mpitest.h"
int main(int argc, char *argv[])
{
int errs = 0;
int size, rank;
MPI_Request req;
int flag;
MTest_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &size);
if (size < 2) {
fprintf(stderr, "Launch with two processes\n");
MPI_Abort(MPI_COMM_WORLD, 1);
}
if (rank == 0) {
MPI_Ssend_init(NULL, 0, MPI_INT, 1, 0, MPI_COMM_WORLD, &req);
MPI_Start(&req);
/* ssend cannot be complete at this point */
MPI_Test(&req, &flag, MPI_STATUS_IGNORE);
if (flag != 0) {
errs++;
fprintf(stderr, "ERROR: synchronous send completed before matching recv was posted\n");
}
}
MPI_Barrier(MPI_COMM_WORLD);
if (rank == 0) {
MPI_Wait(&req, MPI_STATUS_IGNORE);
MPI_Request_free(&req);
} else if (rank == 1) {
MPI_Recv(NULL, 0, MPI_INT, 0, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
}
MTest_Finalize(errs);
return 0;
}
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