2 /* Creator: Bronis R. de Supinski (bronis@llnl.gov) Fri Mar 17 2000 */
3 /* no-error.c -- do some MPI calls without any errors */
13 main (int argc, char **argv)
17 char processor_name[128];
27 MPI_Init (&argc, &argv);
28 MPI_Comm_size (MPI_COMM_WORLD, &nprocs);
29 MPI_Comm_rank (MPI_COMM_WORLD, &rank);
30 MPI_Get_processor_name (processor_name, &namelen);
31 printf ("(%d) is alive on %s\n", rank, processor_name);
33 MPI_Barrier (MPI_COMM_WORLD);
37 printf ("not enough tasks\n");
41 int dest = (rank == nprocs - 1) ? (0) : (rank + 1);
42 int src = (rank == 0) ? (nprocs - 1) : (rank - 1);
43 memset (buf0, rank, buf_size);
44 memset (buf1, rank, buf_size);
46 for (i = 0; i < req_count; i++) {
47 MPI_Irecv (buf0, buf_size, MPI_INT, src, 0, MPI_COMM_WORLD, &req1);
48 MPI_Isend (buf1, buf_size, MPI_INT, dest, 0, MPI_COMM_WORLD, &req2);
49 MPI_Wait(&req2,&status);
50 MPI_Wait(&req1,&status);
54 MPI_Barrier (MPI_COMM_WORLD);
56 printf ("(%d) Finished normally\n", rank);