4 int main (int argc, char **argv) {
9 MPI_Init(&argc, &argv);
10 MPI_Comm_size(MPI_COMM_WORLD, &size);
11 MPI_Comm_rank(MPI_COMM_WORLD, &rank);
13 start_timer = MPI_Wtime();
18 printf("node %d has value %d\n", rank, value);
19 MPI_Bcast(&value, 1, MPI_INT, 0, MPI_COMM_WORLD);
20 printf("node %d has value %d\n", rank, value);
22 MPI_Barrier( MPI_COMM_WORLD );
24 printf("Elapsed time on rank %d: %lf s\n", rank, MPI_Wtime()-start_timer);