[GitHub] pengzhao-intel commented on a change in pull request #12418: Fix flaky test: test_mkldnn.test_activation #12377

[GitBox <gi...@apache.org>]

pengzhao-intel commented on a change in pull request #12418: Fix flaky test: test_mkldnn.test_activation #12377
URL: https://github.com/apache/incubator-mxnet/pull/12418#discussion_r214285132
 
 

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 File path: tests/python/mkl/test_mkldnn.py
 ##########
 @@ -292,7 +291,7 @@ def check_activation_training(stype):
             in_location = [mx.nd.array(data_tmp).tostype(stype)]
 
             test = mx.symbol.Activation(data, act_type="relu")
-            check_numeric_gradient(test, in_location, numeric_eps=1e-2, rtol=0.16, atol=1e-4)
+            check_numeric_gradient(test, in_location, numeric_eps=1e-6, rtol=0.16, atol=1e-4)
 
 Review comment:
   Actually, it will improve the precision of the reference results because we use the smaller eps for the finite difference method. 
   Previously, the flaky test is caused by the large eps which can't simulate the small difference.
   The numerical calculation sometimes is a little tricky :)

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