1 /* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
3 * (C) 2015 by Argonne National Laboratory.
4 * See COPYRIGHT in top-level directory.
13 static char MTEST_Descrip[] = "Test message reception ordering issues
14 after cancelling a send";
17 int main(int argc, char *argv[])
20 int a, b, flag = 0, errs = 0;
21 MPI_Request requests[2];
22 MPI_Status statuses[2];
24 MPI_Init(&argc, &argv);
27 MPI_Comm_rank(MPI_COMM_WORLD, &rank);
28 MPI_Comm_size(MPI_COMM_WORLD, &size);
34 MPI_Isend(&a, 1, MPI_INT, 1, 0, MPI_COMM_WORLD, &requests[0]);
35 MPI_Isend(&b, 1, MPI_INT, 1, 0, MPI_COMM_WORLD, &requests[1]);
36 MPI_Cancel(&requests[1]);
37 MPI_Wait(&requests[1], &statuses[1]);
38 MPI_Test_cancelled(&statuses[1], &flag);
41 printf("Failed to cancel send");
44 MPI_Barrier(MPI_COMM_WORLD);
45 MPI_Wait(&requests[0], MPI_STATUS_IGNORE);
48 MPI_Barrier(MPI_COMM_WORLD);
49 MPI_Recv(&a, 1, MPI_INT, 0, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
51 printf("Failed! got the data from the wrong send!\n");