Benchmarking both storage and dot

def bench_dot(lhs_row_dim, lhs_col_dim, rhs_col_dim, density,
              rhs_density, dot_func, trans_lhs, lhs_stype,
              rhs_stype, only_storage, distribution="uniform"):
    """ Benchmarking both storage and dot
    """
    lhs_nd = rand_ndarray((lhs_row_dim, lhs_col_dim), lhs_stype, density, distribution=distribution)
    if not only_storage:
        rhs_nd = rand_ndarray((lhs_col_dim, rhs_col_dim), rhs_stype,
                              density=rhs_density, distribution=distribution)
        out = dot_func(lhs_nd, rhs_nd, trans_lhs)
    mx.nd.waitall()