fix test code for bi_rnn
@@ -125,7 +125,7 @@ class TestNStepRNN(unittest.TestCase):
gradient_check.check_backward(
fun, tuple(in_data),
tuple([gh_data, ] + gys_data),
- tuple(params), eps=1e-2, rtol=1e-3, atol=1e-3)
+ tuple(params), eps=1e-2, rtol=1e-2, atol=5e-2)
@condition.retry(3)
def test_backward_cpu(self):
