1 /* A simple bugged MPI_ISend and MPI_IRecv test */
3 /* Copyright (c) 2009, 2011. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
11 #include <mc/modelchecker.h>
14 int main(int argc, char **argv)
16 int recv_buff, err, size, rank;
20 err = MPI_Init(&argc, &argv);
21 if (err != MPI_SUCCESS) {
22 printf("MPI initialization failed!\n");
26 err = MPI_Comm_size(MPI_COMM_WORLD, &size); /* Get nr of tasks */
27 err = MPI_Comm_rank(MPI_COMM_WORLD, &rank); /* Get id of this process */
29 printf("run this program with exactly 3*N processes \n");
35 MPI_Recv(&recv_buff, 1, MPI_INT, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &status);
36 printf("(%d) receive %d\n", rank, recv_buff);
37 MPI_Recv(&recv_buff, 1, MPI_INT, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &status);
38 printf("(%d) receive %d\n", rank, recv_buff);
40 MPI_Send(&rank, 1, MPI_INT, (rank / 3) * 3, 42, MPI_COMM_WORLD);
41 printf("Sent %d to rank %d\n", rank, (rank / 3) * 3);