2 /* Creator: Bronis R. de Supinski (bronis@llnl.gov) Fri Mar 17 2000 */
3 /* no-error.c -- do some MPI calls without any errors */
12 main (int argc, char **argv)
16 char processor_name[128];
25 MPI_Init (&argc, &argv);
26 MPI_Comm_size (MPI_COMM_WORLD, &nprocs);
27 MPI_Comm_rank (MPI_COMM_WORLD, &rank);
28 MPI_Get_processor_name (processor_name, &namelen);
29 printf ("(%d) is alive on %s\n", rank, processor_name);
31 MPI_Barrier (MPI_COMM_WORLD);
35 printf ("not enough repetitions\n");
40 printf ("not enough tasks\n");
44 memset (buf0, 0, buf_size*sizeof(int));
46 MPI_Irecv (buf1, buf_size, MPI_INT,
47 MPI_ANY_SOURCE, 0, MPI_COMM_WORLD, &req);
49 MPI_Send (buf0, buf_size, MPI_INT, 1, 0, MPI_COMM_WORLD);
51 for (i = 0; i < NUMREPS; i++) {
52 MPI_Send (buf0, buf_size, MPI_INT, 1, 0, MPI_COMM_WORLD);
54 MPI_Recv (buf0, buf_size, MPI_INT, 1, 0, MPI_COMM_WORLD, &status);
57 MPI_Wait (&req, &status);
61 MPI_Irecv (buf1, buf_size, MPI_INT,
62 MPI_ANY_SOURCE, 0, MPI_COMM_WORLD, &req);
64 MPI_Recv (buf0, buf_size, MPI_INT, 0, 0, MPI_COMM_WORLD, &status);
66 MPI_Send (buf0, buf_size, MPI_INT, 0, 0, MPI_COMM_WORLD);
68 for (i = 0; i < NUMREPS-1; i++) {
69 MPI_Send (buf0, buf_size, MPI_INT, 0, 0, MPI_COMM_WORLD);
71 MPI_Recv (buf0, buf_size, MPI_INT, 0, 0, MPI_COMM_WORLD, &status);
74 MPI_Send (buf0, buf_size, MPI_INT, 0, 0, MPI_COMM_WORLD);
76 MPI_Wait (&req, &status);
79 MPI_Barrier (MPI_COMM_WORLD);
82 printf ("(%d) Finished normally\n", rank);