MPI_Aint type_size = 0, nbytes = 0;
int relative_dst, dst_tree_root, my_tree_root, send_offset;
int recv_offset, tree_root, nprocs_completed, offset;
MPI_Aint type_size = 0, nbytes = 0;
int relative_dst, dst_tree_root, my_tree_root, send_offset;
int recv_offset, tree_root, nprocs_completed, offset;