title: Shuffle instruction in CUDA
body: <p>I am new to cuda so maybe this will be noob question, but here we go...</p>
  
  <p>I can't use shuffle instructions in my kernel and I don't know why. I have Quadro K620 with compute capability 5.0, but instruction such as <code>__shfl_down</code> aren't recognized. I am using Visual Studio 2013. I can go to definition of these instructions, but condition <code>defined(__CUDACC__)</code> in <code>sm_30_intrinsics.h</code> makes every definition unreachable. Is problem in project settings or something like that?</p>