3 // Allgather - gather/bcast algorithm
4 int smpi_coll_tuned_allgather_GB(void *send_buff, int send_count,
5 MPI_Datatype send_type, void *recv_buff,
6 int recv_count, MPI_Datatype recv_type,
10 MPI_Comm_size(comm, &num_procs);
11 MPI_Gather(send_buff, send_count, send_type, recv_buff, recv_count, recv_type,
13 MPI_Bcast(recv_buff, (recv_count * num_procs), recv_type, 0, comm);