cupy-cuda安装下载报错以及速度太慢的问题

ERROR: THESE PACKAGES DO NOT MATCH THE HASHES FROM THE REQUIREMENTS FILE. If you have updated the package versions, please update the hashes. Otherwise, examine the package contents carefully; someone may have tampered with them.
错误原因：网络问题
提供一种加速下载的办法——添加清华镜像
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple cupy-cuda80
或者
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple cupy-cuda90
等等。