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Fix random seed of dynamic rnn gradient check #7453

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Merged
reyoung merged 1 commit into from
Jan 15, 2018
Merged

Fix random seed of dynamic rnn gradient check #7453

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21 changes: 19 additions & 2 deletions python/paddle/v2/fluid/tests/test_dynrnn_gradient_check.py
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Original file line number Diff line number Diff line change
Expand Up @@ -197,7 +197,24 @@ def _exe_mean_out_(self):
return numpy.array([o.mean() for o in outs.itervalues()]).mean()


class TestSimpleMul(unittest.TestCase):
class SeedFixedTestCase(unittest.TestCase):
@classmethod
def setUpClass(cls):
"""Fix random seeds to remove randomness from tests"""
cls._np_rand_state = numpy.random.get_state()
cls._py_rand_state = random.getstate()

numpy.random.seed(123)
random.seed(124)

@classmethod
def tearDownClass(cls):
"""Restore random seeds"""
numpy.random.set_state(cls._np_rand_state)
random.setstate(cls._py_rand_state)


class TestSimpleMul(SeedFixedTestCase):
DATA_NAME = 'X'
DATA_WIDTH = 32
PARAM_NAME = 'W'
Expand Down Expand Up @@ -263,7 +280,7 @@ def test_forward_backward(self):
self.assertTrue(numpy.allclose(i_g_num, i_g, rtol=0.05))


class TestSimpleMulWithMemory(unittest.TestCase):
class TestSimpleMulWithMemory(SeedFixedTestCase):
DATA_WIDTH = 32
HIDDEN_WIDTH = 20
DATA_NAME = 'X'
Expand Down