Tensorflow doesn't seem to see my gpu : <p>I've tried tensorflow on both cuda 7.5 and 8.0, w/o cudnn (my GPU is old, cudnn doesn't support it). </p>

<p>When I execute <code>device_lib.list_local_devices()</code>, there is no gpu in the output. Theano sees my gpu, and works fine with it, and examples in /usr/share/cuda/samples work fine as well. </p>

<p>I installed tensorflow through pip install. Is my gpu too old for tf to support it? gtx 460</p>
