运行故障：

MNIST，运行中间发生Python执行非法指令错误，同时运行窗口报告：Couldn't open CUDA library cupti64_80.dll无法继续执行
原因：CUDA的cupti64_80.dll的路径没有加入PATH
解决问题办法：
将目录C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\extras\CUPTI\libx64下的cupti64_80.dll 复制到C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\bin即可
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I have encountered this problem before. When you use CUDA 8.0,the file cupti64_80.dll lies in C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\extras\CUPTI\libx64. I just fixed the problem by copying the dll into C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\bin, and the file cupti.lib in the same location into C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\lib\x64. And it works!
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