Ubuntu 18.04 安装 CUDA 10.2 和 CUDA 9

目录

1. 错误解决

我已经安装了 440.44 的驱动，和 CUDA 10.2（安装过程）

再安装 CUDA 9.0

accept/decline/quit:accept    

You are attempting to install on an unsupported configuration. Do you wish to continue?
(y)es/(n)o [ default is no ]: y

Install NVIDIA Accelerated Graphics Driver for Linux-x86_64 384.81?
(y)es/(n)o/(q)uit: n

Install the CUDA 9.0 Toolkit?
(y)es/(n)o/(q)uit: y

Enter Toolkit Location
 [ default is /usr/local/cuda-9.0 ]: 

/usr/local/cuda-9.0 is not writable.
Do you wish to run the installation with 'sudo'?
(y)es/(n)o: y

Please enter your password: 
Do you want to install a symbolic link at /usr/local/cuda?
(y)es/(n)o/(q)uit: n

Install the CUDA 9.0 Samples?
(y)es/(n)o/(q)uit: y

Enter CUDA Samples Location
 [ default is /home/user ]:

错误解决

Error: unsupported compiler: 7.4.0. Use –override to override this check.

gcc 版本过高，解决方法参考这个博客

sudo apt install gcc-6 g++-6
sudo ln -s /usr/bin/gcc-6 /usr/local/bin/gcc
sudo ln -s /usr/bin/g++-6 /usr/local/bin/g++