2 /* Creator: Bronis R. de Supinski (bronis@llnl.gov) */
4 /* group-no-free2.c -- construct many groups without freeing some */
8 "$Header: /usr/gapps/asde/cvs-vault/umpire/tests/group-no-free2.c,v 1.1 2003/01/13 18:31:48 bronis Exp $";
12 /* NOTE: Some value of ITERATIONS will imply resource exhaustion */
13 /* either in Umpire or MPI no matter how things are implemented */
14 /* the best we can hope for is to fail gracefully... */
15 /* UNKNOWN N breaks umpire due to running out of memory as of 12/20/02... */
16 /* FAILURE IS NOT GRACEFUL AS OF THIS TIME... */
17 #define ITERATIONS 100
18 #define GROUPS_PER_ITERATION 3
19 #define GROUPS_LOST_PER_ITERATION 1
29 main (int argc, char **argv)
34 char processor_name[128];
36 MPI_Group newgroup[GROUPS_PER_ITERATION];
39 MPI_Init (&argc, &argv);
40 MPI_Comm_size (MPI_COMM_WORLD, &nprocs);
41 MPI_Comm_rank (MPI_COMM_WORLD, &rank);
42 MPI_Get_processor_name (processor_name, &namelen);
43 printf ("(%d) is alive on %s\n", rank, processor_name);
46 MPI_Barrier (MPI_COMM_WORLD);
48 for (i = 0; i < ITERATIONS; i++) {
49 for (j = 0; j < GROUPS_PER_ITERATION; j++) {
50 MPI_Comm_group (MPI_COMM_WORLD, &newgroup[j]);
52 if (j < GROUPS_PER_ITERATION - GROUPS_LOST_PER_ITERATION) {
53 MPI_Group_free (&newgroup[j]);
58 MPI_Barrier (MPI_COMM_WORLD);
59 printf ("(%d) Finished normally\n", rank);