摘自：http://blog.csdn.net/Maple2014/article/details/78574275
多个 cuda 版本之间进行切换
将~/.bashrc 或 ~/.zshrc 下与cuda相关的路径都改为
/usr/local/cuda/
而不使用 /usr/local/cuda-8.0/ 或/usr/local/cuda-9.0/。
#在切换cuda版本时
rm -rf /usr/local/cuda#删除之前创建的软链接
sudoln-s /usr/local/cuda-8.0/ /usr/local/cuda/
nvcc--version #查看当前 cuda 版本
nvcc: NVIDIA (R) Cuda compiler driverCopyright (c)2005-2016NVIDIA CorporationBuiltonMon_Jan_23_12:24:11_CST_2017Cuda compilation tools, release8.0, V8.0.62
#cuda8.0 切换到 cuda9.0
rm -rf /usr/local/cuda
sudo ln -s /usr/local/cuda-9.0/ /usr/local/cuda/
nvcc--version
install cuda
download url:https://developer.nvidia.com/cuda-75-downloads-archive
commands needs for Instructions:7.5:
`sudo rpm -i cuda-repo-rhel7-7-5-local-7.5-18.x86_64.rpm`
`sudo yum clean all`
`sudo yum install cuda`
echo $PATH
/usr/local/cuda-8.0/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
-bash-4.2# export PATH=/usr/local/cuda/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
-bash-4.2# echo $PATH
/usr/local/cuda/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
