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];
24 MPI_Init (&argc, &argv);
25 MPI_Comm_size (MPI_COMM_WORLD, &nprocs);
26 MPI_Comm_rank (MPI_COMM_WORLD, &rank);
27 MPI_Get_processor_name (processor_name, &namelen);
28 printf ("(%d) is alive on %s\n", rank, processor_name);
31 MPI_Barrier (MPI_COMM_WORLD);
35 printf ("not enough tasks\n");
39 int dest = (rank == nprocs - 1) ? (0) : (rank + 1);
40 int src = (rank == 0) ? (nprocs - 1) : (rank - 1);
41 memset (buf0, rank, buf_size);
42 memset (buf1, rank, buf_size);
43 MPI_Irecv (buf0, buf_size, MPI_INT, src, 0, MPI_COMM_WORLD, &req1);
44 MPI_Isend (buf1, buf_size, MPI_INT, dest, 0, MPI_COMM_WORLD, &req2);
45 MPI_Wait(&req2,&status);
46 MPI_Wait(&req1,&status);
49 MPI_Barrier (MPI_COMM_WORLD);
51 printf ("(%d) Finished normally\n", rank);