MPI_Status s;
MPI_Aint send_chunk, recv_chunk;
int i, src, dst, rank, num_procs;
- int tag = 1;
+ int tag = COLL_TAG_ALLTOALL;
char *send_ptr = (char *) send_buff;
char *recv_ptr = (char *) recv_buff;
send_chunk *= send_count;
recv_chunk *= recv_count;
- smpi_mpi_barrier(comm);
+ mpi_coll_barrier_fun(comm);
for (i = 0; i < num_procs; i++) {
src = (rank - i + num_procs) % num_procs;
dst = (rank + i) % num_procs;