NULL, 0, MPI_UNSIGNED_CHAR, source, 10, comm, MPI_STATUS_IGNORE);
/* Wait 2 seconds */
NULL, 0, MPI_UNSIGNED_CHAR, source, 10, comm, MPI_STATUS_IGNORE);
/* Wait 2 seconds */
/* Now receive the messages */
MPI_Recv(msg1, msgsize, MPI_UNSIGNED_CHAR, source, 0, comm, &status1);
MPI_Recv(msg2, msgsize, MPI_UNSIGNED_CHAR, source, 0, comm, &status2);
/* Now receive the messages */
MPI_Recv(msg1, msgsize, MPI_UNSIGNED_CHAR, source, 0, comm, &status1);
MPI_Recv(msg2, msgsize, MPI_UNSIGNED_CHAR, source, 0, comm, &status2);