message: Only enable test if gpu is available (NCHW does not have the CPU implementation)
diff: @@ -207,6 +207,8 @@ class DepthwiseConv2DTest(test.TestCase):
  def testDepthwiseConv2DWithUnknownShape(self):
  # GitHub issue 22110.
  + if not test.is_gpu_available():
  + return
  with self.test_session(use_gpu=True):
  x = array_ops.placeholder(dtypes.float32)
  f = np.ones([1, 1, 1, 1], np.float32)
  