wkcn commented on a change in pull request #18644:
URL: https://github.com/apache/incubator-mxnet/pull/18644#discussion_r447749228
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File path: tests/python/unittest/test_gluon.py
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@@ -665,6 +665,34 @@ def transpose(shape):
assert (layer(x).shape==ceil_out_shape)
+@with_seed()
+@pytest.mark.parametrize('cudnn_off', [True, False])
+@pytest.mark.parametrize('variable', ['running_var', 'running_mean'])
+def test_batchnorm_backward_synchronization(cudnn_off, variable):
+ """
+ Tests if synchronization of BatchNorm running variables is done correctly.
+ If not, the test sometimes fails - depending on the timing.
+ """
+ ctx = mx.cpu() if cudnn_off else mx.gpu()
Review comment:
It should be `ctx = default_context()`.
In CI, there are tests on CPU and GPU. We don't need to specify the context.
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