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From GitBox <...@apache.org>
Subject [GitHub] [singa] chrishkchris opened a new pull request #743: Fix some GPU test cases by precsion setting
Date Fri, 19 Jun 2020 03:25:05 GMT

chrishkchris opened a new pull request #743:
URL: https://github.com/apache/singa/pull/743


   Here is just a very minor fix of GPU test case, which needs to set the precision of test.

   
   For instance, the default precision of test is absolute tolerance atol=1e-6 if (we don't
pass the argument), which is too tough.
   
   ```
   root@d05828f767ee:~/dcsysh/singa/test/python# python3 test_api.py
   ......F.F...................
   ======================================================================
   FAIL: test_batchnorm_testing_gpu (__main__.TestAPI)
   ----------------------------------------------------------------------
   Traceback (most recent call last):
     File "test_api.py", line 195, in test_batchnorm_testing_gpu
       _run_testing(x_0, s_0, b_0, rm_0, rv_0, m_0=1.0)
     File "test_api.py", line 186, in _run_testing
       y_1, tensor.to_numpy(_cTensor_to_pyTensor(y_2_c)), decimal=5)
     File "/usr/local/lib/python3.6/dist-packages/numpy/testing/_private/utils.py", line 1047,
in assert_array_almost_equal
       precision=decimal)
     File "/usr/local/lib/python3.6/dist-packages/numpy/testing/_private/utils.py", line 846,
in assert_array_compare
       raise AssertionError(msg)
   AssertionError:
   Arrays are not almost equal to 5 decimals
   
   Mismatched elements: 4 / 16 (25%)
   Max absolute difference: 4.4822693e-05
   Max relative difference: 4.482269e-06
    x: array([[[[  1.     ,   1.     ],
            [  1.     ,   1.     ]],
   ...
    y: array([[[[  1.     ,   1.     ],
            [  1.     ,   1.     ]],
   ...
   
   ======================================================================
   FAIL: test_batchnorm_training_gpu (__main__.TestAPI)
   ----------------------------------------------------------------------
   Traceback (most recent call last):
     File "test_api.py", line 161, in test_batchnorm_training_gpu
       _run_training(x_0, s_0, b_0, rm_0, rv_0, m_0=0.2)
     File "test_api.py", line 132, in _run_training
       y_1, tensor.to_numpy(_cTensor_to_pyTensor(y_2_c)), decimal=5)
     File "/usr/local/lib/python3.6/dist-packages/numpy/testing/_private/utils.py", line 1047,
in assert_array_almost_equal
       precision=decimal)
     File "/usr/local/lib/python3.6/dist-packages/numpy/testing/_private/utils.py", line 846,
in assert_array_compare
       raise AssertionError(msg)
   AssertionError:
   Arrays are not almost equal to 5 decimals
   
   Mismatched elements: 21881 / 40000 (54.7%)
   Max absolute difference: 0.00010204
   Max relative difference: 0.75810695
    x: array([[[[-7.11059e-01,  1.31187e+00,  1.10835e+00, ...,  6.71445e-01,
             -4.11530e-01,  7.55671e-01],
            [ 2.34414e-01,  1.75757e-02,  1.53543e+00, ..., -3.24708e-01,...
    y: array([[[[-7.11130e-01,  1.31193e+00,  1.10839e+00, ...,  6.71459e-01,
             -4.11583e-01,  7.55690e-01],
            [ 2.34401e-01,  1.75493e-02,  1.53550e+00, ..., -3.24755e-01,...
   
   ----------------------------------------------------------------------
   Ran 28 tests in 1.582s
   ```


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