@ut.memoize
def get_rank_mat(testres, qaids=None):
    rank_mat = testres.get_infoprop_mat(key='qx2_gt_rank', qaids=qaids)
    return rank_mat
@ut.memoize
def get_rank_mat(testres, qaids=None):
    rank_mat = testres.get_infoprop_mat(key='qx2_gt_rank', qaids=qaids)
    return rank_mat