9 main (int argc, char **argv)
13 char processor_name[128];
20 MPI_Init (&argc, &argv);
21 MPI_Comm_size (MPI_COMM_WORLD, &nprocs);
22 MPI_Comm_rank (MPI_COMM_WORLD, &rank);
23 MPI_Get_processor_name (processor_name, &namelen);
24 printf ("(%d) is alive on %s\n", rank, processor_name);
27 MPI_Barrier (MPI_COMM_WORLD);
31 printf ("not enough tasks\n");
35 memset (buf0, 0, buf_size*sizeof(int));
36 MPI_Send (buf0, buf_size, MPI_INT, 1, 0, MPI_COMM_WORLD);
37 MPI_Recv (buf1, buf_size, MPI_INT, 1, 0, MPI_COMM_WORLD, &status);
41 MPI_Recv (buf0, buf_size, MPI_INT, 0, 0, MPI_COMM_WORLD, &status);
42 memset (buf1, 1, buf_size*sizeof(int));
43 MPI_Send (buf1, buf_size, MPI_INT, 0, 0, MPI_COMM_WORLD);
46 MPI_Barrier (MPI_COMM_WORLD);
49 printf ("(%d) Finished normally\n", rank);