Spatial transformer test case fails often

[rahul003]

Operating System: Linux
Compiler: gcc4.8
Package used: Python
MXNet commit hash (git rev-parse HEAD): 860dda2

Python version and distribution: 2.7 on gpu

Error Message:

======================================================================
FAIL: test_operator_gpu.test_spatial_transformer_with_type
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/nose/case.py", line 198, in runTest
    self.test(*self.arg)
  File "/workspace/tests/python/gpu/test_operator_gpu.py", line 654, in test_spatial_transformer_with_type
    check_consistency(sym, ctx_list)
  File "/workspace/python/mxnet/test_utils.py", line 1120, in check_consistency
    raise e
  File "/workspace/python/mxnet/test_utils.py", line 1115, in check_consistency
    assert_almost_equal(arr, gtarr, rtol=tol[dtypes[i]], atol=tol[dtypes[i]])
  File "/workspace/python/mxnet/test_utils.py", line 351, in assert_almost_equal
    raise AssertionError(msg)
nose.proxy.AssertionError: 
Items are not equal:
Error 3.625779 exceeds tolerance rtol=0.001000, atol=0.001000.  Location of maximum error:(0, 3, 6, 3), a=0.410997, b=0.416132
 a: array([[[[-31.50229263, -21.41567993,   6.15771866, ...,   2.8015573 ,
          -13.36835289, -23.15978813],
         [ -3.62330437, -38.62851715, -32.01438141, ...,  12.89842606,...
 b: array([[[[-31.51775551, -21.42281914,   6.15355921, ...,   2.80197096,
          -13.37347221, -23.16914177],
         [ -3.62049437, -38.64873505, -32.03084564, ...,  12.90172482,...
-------------------- >> begin captured stdout << ---------------------
Train Err: ctx 1 vs ctx 0 at data

--------------------- >> end captured stdout << ----------------------

Minimum reproducible example

This test fails intermittently on gpu with mklml or cudnn. In the last 30 builds on master it has failed 10+ times. Sometimes it fails with mklml and sometimes with cudnn.
Example to the test failure on build
https://builds.apache.org/blue/organizations/jenkins/incubator-mxnet/detail/master/258/pipeline

Steps to reproduce

1. make DEV=1 USE_PROFILER=1 USE_BLAS=openblas USE_CUDA=1 USE_CUDA_PATH=/usr/local/cuda USE_CUDNN=1 USE_CPP_PACKAGE=1 -j8

2. PYTHONPATH=./python/ nosetests --verbose tests/python/gpu/test_operator_gpu.py:test_spatial_transformer_with_type

[rahul003]

@tornadomeet Could you please check the testcase?

[tornadomeet]

@rahul003 sorry, i'll check it, you can skip this test before fixed.

[szha]

This issue is closed due to lack of activity in the last 90 days. Feel free to ping me to reopen if this is still an active issue. Thanks!
Also, do please check out our forum (and Chinese version) for general "how-to" questions.

[rahul003]

Please reopen this as it hasn't been fixed