title: how  to use NVidia Visual Profiler with OpenCL (on Linux)?
body: <p>I'm trying to use nvvp to profile opencl kernels.
  I'm running ubuntu 12.04 64b with a GTX 580 and have verified the CUDA toolkit is working fine (i can run and profile cuda code).
  When  trying to debug my opencl code i get:<br>
  <code>Warning: No CUDA application was profiled, exiting</code><br>
  Any hints?</p>