
Changed statements of type "#if __CUDA_ARCH__ >= 200" to "#if defined __CUDA_ARCH__ && __CUDA_ARCH__ >= 200" in order to avoid warnings about __CUDA_ARCH__ being undefined.
Changed statements of type "#if __CUDA_ARCH__ >= 200" to "#if defined __CUDA_ARCH__ && __CUDA_ARCH__ >= 200" in order to avoid warnings about __CUDA_ARCH__ being undefined.