title: CUDNN_STATUS_NOT_INITIALIZED: why is Tensorflow in Python/PyCharm so finicky?
body: <p>Every once in a while, I get an error like</p>
  
  <blockquote>
    <p>2020-02-26 14:17:31.605963: I tensorflow/stream_executor/platform/default/dso_loader.cc:42] Successfully opened dynamic library libcublas.so.10.0
    2020-02-26 14:17:31.829898: I tensorflow/stream_executor/platform/default/dso_loader.cc:42] Successfully opened dynamic library libcudnn.so.7
    2020-02-26 14:17:32.757316: E tensorflow/stream_executor/cuda/cuda_dnn.cc:329] Could not create cudnn handle: CUDNN_STATUS_NOT_INITIALIZED
    2020-02-26 14:17:32.757384: E tensorflow/stream_executor/cuda/cuda_dnn.cc:337] Possibly insufficient driver version: 440.33.1
    2020-02-26 14:17:32.758265: E tensorflow/stream_executor/cuda/cuda_dnn.cc:329] Could not create cudnn handle: CUDNN_STATUS_NOT_INITIALIZED
    2020-02-26 14:17:32.758293: E tensorflow/stream_executor/cuda/cuda_dnn.cc:337] Possibly insufficient driver version: 440.33.1</p>
    
    <p>Traceback (most recent call last):
    tensorflow.python.framework.errors_impl.UnknownError: 2 root error(s) found.
      (0) Unknown: Failed to get convolution algorithm. This is probably because cuDNN failed to initialize, so try looking to see if a warning log message was printed above.
         [[{{node conv2d/Conv2D}}]]
      (1) Unknown: Failed to get convolution algorithm. This is probably because cuDNN failed to initialize, so try looking to see if a warning log message was printed above.
         [[{{node conv2d/Conv2D}}]]
         [[dense/Sigmoid/_285]]</p>
  </blockquote>
  
  <p>Then I reload PyCharm or reboot the system and everything runs as expected. And then it shows up again. What could be causing it?</p>