}
else {
MPI_Comm_split (MPI_COMM_WORLD, rank % 2, nprocs - rank, &comm);
-
+
if (comm != MPI_COMM_NULL) {
MPI_Comm_size (comm, &dnprocs);
MPI_Comm_rank (comm, &drank);
if (dnprocs > 1) {
if (drank == 0) {
- memset (buf0, 0, buf_size);
+ memset (buf0, 0, buf_size*sizeof(int));
MPI_Recv (buf1, buf_size, MPI_INT, 1, 0, comm, &status);
MPI_Send (buf0, buf_size, MPI_INT, 1, 0, comm);
}
else if (drank == 1) {
- memset (buf1, 1, buf_size);
+ memset (buf1, 1, buf_size*sizeof(int));
MPI_Recv (buf0, buf_size, MPI_INT, 0, 0, comm, &status);