3) binomial_tree bcast intra-communication between root of each SMP node
4) binomial_tree bcast inside each SMP node
*/
3) binomial_tree bcast intra-communication between root of each SMP node
4) binomial_tree bcast inside each SMP node
*/
int allreduce__smp_binomial(const void *send_buf, void *recv_buf,
int count, MPI_Datatype dtype,
MPI_Op op, MPI_Comm comm)
int allreduce__smp_binomial(const void *send_buf, void *recv_buf,
int count, MPI_Datatype dtype,
MPI_Op op, MPI_Comm comm)