void *recvbuf, int recvcount, MPI_Datatype recvtype,\
int root, MPI_Comm comm))
mpi_coll_scatter_description[scatter_id].coll;
void *recvbuf, int recvcount, MPI_Datatype recvtype,\
int root, MPI_Comm comm))
mpi_coll_scatter_description[scatter_id].coll;