message: Always error if a GPU device is not found (as opposed to just in debug mode)
diff: @@ -25,12 +25,12 @@ OccaDevice occaDevice;
  static void DeviceSetup(const int dev, int &ngpu)
  {
  cudaGetDeviceCount(&ngpu);
  - MFEM_ASSERT(ngpu>0, "No CUDA device found!");
  + if (!(ngpu>0)) { mfem_error("No CUDA device found!"); }
  cuInit(0);
  cuDeviceGet(&cuDevice,dev);
  cuCtxCreate(&cuContext, CU_CTX_SCHED_AUTO, cuDevice);
  cuStream = new CUstream;
  - MFEM_ASSERT(cuStream, "CUDA stream could not be created!");
  + if (!cuStream) { mfem_error("CUDA stream could not be created!"); }
  cuStreamCreate(cuStream, CU_STREAM_DEFAULT);
  }
  #endif
  