在跑alexnet的测试demo时，遇到无错跳出finished with exit code -1073740791 (0xC0000409)，查出是显卡内存不足的问题，解决如下：

import os
os.environ["CUDA_VISIBLE_DEVICES"] = "-1"

参考链接：
(1)https://stackoverflow.com/questions/44552585/prevent-tensorflow-from-accessing-the-gpu

(2)https://blog.csdn.net/dlhlSC/article/details/77100435