title: How do I enable CUDA on the examples on the accelerate-examples package?
body: <p>I've installed CUDA on my OSX Yosemite. I've downloaded the accelerate-examples package and compiled it with <code>cabal install</code>. It compiled correctly. When I ran the examples, though, I noticed they do not offer a option to run under CUDA. For example:</p>
  
  <pre><code>vh:accelerate-crystal apple1$ ./accelerate-crystal
  EKG monitor started at: http://localhost:8000
  
  accelerate-crystal (c) [2011..2013] The Accelerate Team
  
  Usage: accelerate-crystal [OPTIONS]
  
  Available backends:
    *  interpreter  reference implementation (sequential)
  </code></pre>
  
  <p>This makes them run slow (and, obviously, beat the purpose). How do I enable CUDA on the compiled examples?</p>