title: Illegal instruction(core dumped) tensorflow
body: <p>I am importing tensorflow in my ubuntu python 
  using following commands-</p>
  
  <pre><code>$ python3
  Python 3.5.2 (default, Nov 23 2017, 16:37:01) 
  [GCC 5.4.0 20160609] on linux
  Type "help", "copyright", "credits" or "license" for more information.
  &gt;&gt;&gt; import tensorflow as tf
  Illegal instruction (core dumped)
  </code></pre>
  
  <p>And the program exits.
  Please specify the solution.</p>