title: Profiling MPI+Cuda
body: <p>I'm developing a MPI+cuda project and I've tried to profile my app with nvvp and nvprof but, in both cases it doesn't give a profile. The app works completely fine, but no profile is generated.  </p>
  
  <pre><code>nvprof mpirun -np 2 MPI_test
  [...]
  ======== Warning: No CUDA application was profiled, exiting
  </code></pre>
  
  <p>I tried with simpleMPI cuda example with the same result. </p>
  
  <p>I'm using CUDA 5.0 in a 580 GTX and openMPI 1.7.3 (featured, not release yet because I'm testing the CUDA-aware option)</p>
  
  <p>Any ideas? Thank you very much.</p>