2 /* Creator: Bronis R. de Supinski (bronis@llnl.gov) */
4 /* type-no-error-exhaustive.c -- use all group constructors correctly */
8 "$Header: /usr/gapps/asde/cvs-vault/umpire/tests/intercomm_create-no-error.c,v 1.1 2002/07/30 21:34:43 bronis Exp $";
16 #define INTERCOMM_CREATE_TAG 666
20 main (int argc, char **argv)
24 char processor_name[128];
27 MPI_Comm temp, intercomm = MPI_COMM_NULL;
30 MPI_Init (&argc, &argv);
31 MPI_Comm_size (MPI_COMM_WORLD, &nprocs);
32 MPI_Comm_rank (MPI_COMM_WORLD, &rank);
33 MPI_Get_processor_name (processor_name, &namelen);
34 printf ("(%d) is alive on %s\n", rank, processor_name);
37 MPI_Barrier (MPI_COMM_WORLD);
40 printf ("requires at least 2 tasks\n");
43 /* need lots of stuff for this constructor... */
44 MPI_Comm_split (MPI_COMM_WORLD, rank % 2, nprocs - rank, &temp);
46 MPI_Intercomm_create (temp, 0, MPI_COMM_WORLD,
48 ((rank % 2) ? 2 - (nprocs % 2) : 1 + (nprocs % 2)),
49 INTERCOMM_CREATE_TAG, &intercomm);
51 MPI_Comm_free (&intercomm);
53 MPI_Comm_free (&temp);
56 MPI_Barrier (MPI_COMM_WORLD);
58 printf ("(%d) Finished normally\n", rank);