Ubuntu已有cuda10.0再安装cuda9.1
cuda9.1下载链接
https://developer.nvidia.com/cuda-91-download-archive?target_os=Linux&target_arch=x86_64&target_distro=Ubuntu&target_version=1704&target_type=runfilelocal
sudo apt-get install freeglut3-dev build-essential libx11-dev libxmu-dev libxi-dev libgl1-mesa-glx libglu1-mesa libglu1-mesa-dev
sudo sh cuda_8.0.61_375.26_linux.run #开始安装
#..一堆协议说明...
#直接按q退出协议说明.
zerozone@zerozone: accept/decline/quit: accept #接受协议
Install NVIDIA Accelerated Graphics Driver for Linux-x86_64 375.26?
y)es/(n)o/(q)uit: n #是否显卡驱动包，由于已经安装显卡驱动，选择n
Install the CUDA 8.0 Toolkit?
(y)es/(n)o/(q)uit: y #是否安装工具包，选择y
Enter Toolkit Location
[ default is /usr/local/cuda-8.0 ]: #工具包安装地址，默认回车即可
Do you want to install a symbolic link at /usr/local/cuda?
(y)es/(n)o/(q)uit: y #添加链接**注意这个连接，如果你之前安装过另一个版本的cuda，除非你确定想要用这个新版本的cuda，否则这里就建议选no，因为指定该链接后会将cuda指向这个新的版本**
Install the CUDA 8.0 Samples?
(y)es/(n)o/(q)uit: y #安装样例
Enter CUDA Samples Location
[ default is /root ]: #样例安装地址默认即可
# ***安装信息***
Installing the CUDA Toolkit in /usr/local/cuda-8.0 ...
Missing recommended library: libXi.so
Missing recommended library: libXmu.so
#注意，这里出现了Missing recommended library错误，
#是因为博主在第一次安装时，没有添加最开始的那条安装相关依赖的指令，
#之后我添加了依赖后，再次安装，就没有Missing错误了
Installing the CUDA Samples in /root ...
Copying samples to /root/NVIDIA_CUDA-8.0_Samples now...
Finished copying samples.
===========
= Summary =
===========
Driver: Not Selected
Toolkit: Installed in /usr/local/cuda-8.0
Samples: Installed in /root, but missing recommended libraries
Please make sure that
- PATH includes /usr/local/cuda-8.0/bin
- LD_LIBRARY_PATH includes /usr/local/cuda-8.0/lib64, or, add /usr/local/cuda-8.0/lib64 to /etc/ld.so.conf and run ldconfig as root
To uninstall the CUDA Toolkit, run the uninstall script in /usr/local/cuda-8.0/bin
Please see CUDA_Installation_Guide_Linux.pdf in /usr/local/cuda-8.0/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 361.00 is required for CUDA 8.0 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_6388.log
# ***安装完成***
在Ubuntu18.04中安装CUDA 9.1时，会遇到Error: unsupported compiler: 7.5.0的错误。其原因是Ubuntu18.04的编译器版本过高，因此只需要安装较低版本的gcc、g++即可。
具体解决方法是：
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++
之后就可以安装cuda9.1了
vim ~/.bashrc #修改配置文件（如果你用的是zsh，则需要修改 ~/.zshrc文件） #在文件结尾处添加 export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/cuda/lib64 export PATH=$PATH:/usr/local/cuda/bin export CUDA_HOME=$CUDA_HOME:/usr/local/cuda
建立指向cuda9.1的软链接
sudo ln -s /usr/local/cuda-9.1 /usr/local/cuda
查看版本是否为cuda9.1
nvcc -V
