int main(int argc, char **argv)
{
- int recv_buff, err, size, rank;
+ int x,y, err, size, rank;
MPI_Status status;
/* Initialize MPI */
}
if (rank % 3 == 0) {
- MPI_Recv(&recv_buff, 1, MPI_INT, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &status);
- printf("(%d) receive %d\n", rank, recv_buff);
- MPI_Recv(&recv_buff, 1, MPI_INT, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &status);
- printf("(%d) receive %d\n", rank, recv_buff);
+ MPI_Recv(&x, 1, MPI_INT, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &status);
+ printf("(%d) x <- %d\n", rank, x);
+ MPI_Recv(&y, 1, MPI_INT, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &status);
+ printf("(%d) y <- %d\n", rank, y);
}else{
MPI_Send(&rank, 1, MPI_INT, (rank / 3) * 3, 42, MPI_COMM_WORLD);
printf("Sent %d to rank %d\n", rank, (rank / 3) * 3);