2 /* Creator: Bronis R. de Supinski (bronis@llnl.gov) Fri Mar 17 2000 */
3 /* no-error-testall.c -- use MPI_Testall without any errors */
11 main (int argc, char **argv)
16 char processor_name[128];
20 MPI_Status statuses[2];
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 MPI_Irecv (buf0, buf_size, MPI_INT, 1, 0, MPI_COMM_WORLD, &reqs[0]);
41 MPI_Irecv (buf1, buf_size, MPI_INT, 1, 0, MPI_COMM_WORLD, &reqs[1]);
44 MPI_Testall (2, reqs, &flag, statuses);
46 MPI_Send (buf1, buf_size, MPI_INT, 1, 1, MPI_COMM_WORLD);
50 memset (buf0, 0, buf_size);
52 MPI_Isend (buf0, buf_size, MPI_INT, 0, 0, MPI_COMM_WORLD, &reqs[0]);
54 MPI_Isend (buf0, buf_size, MPI_INT, 2, 1, MPI_COMM_WORLD, &reqs[1]);
57 MPI_Testall (2, reqs, &flag, statuses);
59 MPI_Send (buf0, buf_size, MPI_INT, 0, 0, MPI_COMM_WORLD);
61 MPI_Recv (buf1, buf_size, MPI_INT, 0, 1, MPI_COMM_WORLD, statuses);
65 MPI_Recv (buf1, buf_size, MPI_INT, 1, 1, MPI_COMM_WORLD, statuses);
68 MPI_Barrier (MPI_COMM_WORLD);
71 printf ("(%d) Finished normally\n", rank);