title: How to use TPUs with PyTorch?
body: <p>I am trying to use TPU using pytorch_xla, but it shows import error in _XLAC.</p>
  <pre><code>!curl https://raw.githubusercontent.com/pytorch/xla/master/contrib/scripts/env-setup.py -o pytorch-xla-env-setup.py
  !python pytorch-xla-env-setup.py --version $VERSION
  
  import torch_xla
  import torch_xla.core.xla_model as xm
  
  ImportError                               Traceback (most recent call last)
  &lt;ipython-input-60-6a19e980152f&gt; in &lt;module&gt;()
  ----&gt; 1 import torch_xla
        2 import torch_xla.core.xla_model as xm
  
  /usr/local/lib/python3.6/dist-packages/torch_xla/__init__.py in &lt;module&gt;()
       39 import torch
       40 from .version import __version__
  ---&gt; 41 import _XLAC
       42 
       43 _XLAC._initialize_aten_bindings()
  
  ImportError: /usr/local/lib/python3.6/dist-packages/_XLAC.cpython-36m-x86_64-linux-gnu.so: undefined symbol: _ZN2at6native6einsumENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEN3c108ArrayRefINS_6TensorEEE
  </code></pre>