2 /* Creator: Bronis R. de Supinski (bronis@llnl.gov) Fri Mar 17 2000 */
3 /* no-error.c -- do some MPI calls without any errors */
11 main (int argc, char **argv)
15 char processor_name[128];
22 MPI_Init (&argc, &argv);
23 MPI_Comm_size (MPI_COMM_WORLD, &nprocs);
24 MPI_Comm_rank (MPI_COMM_WORLD, &rank);
25 MPI_Get_processor_name (processor_name, &namelen);
26 printf ("(%d) is alive on %s\n", rank, processor_name);
29 MPI_Barrier (MPI_COMM_WORLD);
33 printf ("not enough tasks\n");
37 int dest = (rank == nprocs - 1) ? (0) : (rank + 1);
38 int src = (rank == 0) ? (nprocs - 1) : (rank - 1);
39 memset (buf0, rank, buf_size*sizeof(int));
40 MPI_Irecv (buf0, buf_size, MPI_INT, src, 0, MPI_COMM_WORLD, &req);
41 MPI_Wait(&req,&status);
42 MPI_Send (buf0, buf_size, MPI_INT, dest, 0, MPI_COMM_WORLD);
45 MPI_Barrier (MPI_COMM_WORLD);
48 printf ("(%d) Finished normally\n", rank);