I have found that windows 10 is not supported platform for CUDA.
(windows 10 is not listed in the documentation for CUDA(http://docs.nvidia.com/cuda/cuda-getting-started-guide-for-microsoft-windows/index.html#system-requirements))
And, I also found an article someone had problem on using CUDA on windows 10.
(Losing Unified Memory support in CUDA 7.0 under Windows 10 - Stack Overflow)
Is there anyone who knows about this issue or when will CUDA support window 10 platform officially?