// Allgather - gather/bcast algorithm
int Coll_allgather_GB::allgather(void *send_buff, int send_count,
MPI_Datatype send_type, void *recv_buff,
// Allgather - gather/bcast algorithm
int Coll_allgather_GB::allgather(void *send_buff, int send_count,
MPI_Datatype send_type, void *recv_buff,