ubuntu16.04如何安装多个版本的CUDA

我的机器是cuda16.04的，之前装过cuda10.0，因为一些原因，现在需要安转cuda9.0。

1.首先https://developer.nvidia.com/cuda-90-download-archive?target_os=linux&target_arch=x86_64&target_distro=ubuntu&target_version=1604&target_type=runfilelocal

下载run版本的（如果之前没装过cuda，可以下载deb版本的）

2.按照上面的教程

sudo chmod +x cuda_9.0.176_384.81_linux.run # 为 cuda_9.0.176_384.81_linux.run 添加可执行权限 
./cuda_9.0.176_384.81_linux.run # 安装 cuda_9.0.176_384.81_linux.run

3.相关参数的设置

install nvidia accelerated graphics driver for linux-x86_64 384.81?

(y)es/(n)o/(q)uit: n #我已经装过cuda10了，所以不需要安转9.0的显卡驱动

install the cuda 9.0 toolkit? 
(y)es/(n)o/(q)uit: y


/usr/local/cuda-9.0 is not writable. 
do you wish to run the installation with 'sudo'? (y)es/(n)o: y #使用超级用户权限

please enter your password: do you want to install a symbolic link at /usr/local/cuda? # 是否将安装目录通过软连接的方式 link 到 /usr/local/cuda，yes or no 都可以，取决于你是否使用 /usr/local/cuda 为默认的 cuda 目录。 
(y)es/(n)o/(q)uit: y  #我目前需要使用9.0

 

enter toolkit location
[ default is /usr/local/cuda-9.0 ]:#直接回车

 

4.安转结束后相关环境变量的设置

finished copying samples.

===========
= summary =
===========

driver:   not selected
toolkit:  installed in /usr/local/cuda-9.0
samples:  installed in /usr/local/cuda-9.0/samples

please make sure that
 -   path includes /usr/local/cuda-9.0/bin
 -   ld_library_path includes /usr/local/cuda-9.0/lib64, or, add /usr/local/cuda-9.0/lib64 to /etc/ld.so.conf and run ldconfig as root

to uninstall the cuda toolkit, run the uninstall script in /usr/local/cuda-9.0/bin

please see cuda_installation_guide_linux.pdf in /usr/local/cuda-9.0/doc/pdf for detailed information on setting up cuda.

***warning: incomplete installation! this installation did not install the cuda driver. a driver of version at least 384.00 is required for cuda 9.0 functionality to work.
to install the driver using this installer, run the following command, replacing <cudainstaller> with the name of this run file:
    sudo <cudainstaller>.run -silent -driver

logfile is /tmp/cuda_install_11003.log

如上，需要设置path和ld_library_path两个变量，在./bashrc文件中修改即可，记得要source一些./bashrc，让其生效。

完成上面这些步骤后，就可以进行多个版本的切换了，直接修改/usr/local/cuda即可，使其指向不同版本的cuda。