1. 下载 cuda toolkit 

下载想要版本的 cuda toolkit

CUDA Toolkit 11.8 Downloads | NVIDIA Developer

[xxx@localhost ~]$ hostnamectl
   Static hostname: localhost.localdomain
         Icon name: computer-server
           Chassis: server
        Machine ID: b4258bf9bef54798b03e8e3a13756124
           Boot ID: df28bae14b0a4398a6ddb7fa3ee20c90
  Operating System: CentOS Linux 8 (Core)
       CPE OS Name: cpe:/o:centos:centos:8
            Kernel: Linux 4.18.0-193.28.1.el8_2.x86_64
      Architecture: x86-64

wget https://developer.download.nvidia.com/compute/cuda/11.8.0/local_installers/cuda_11.8.0_520.61.05_linux.run
sudo sh cuda_11.8.0_520.61.05_linux.run

2 无sudo 权限安装CUDA

对于无 sudo 权限 或者 非 root 用户，在安装cuda的时候，将cuda toolkit的安装路径设置为自己有权限的目录就行，比如 /home/zhaozb/cuda-10.0，之后将后续步骤中对应cuda toolkit的安装路径都进行更改就行了 。

要实现上一步，首先需要进入tmp查看是否存在cuda-installer.log文件，如果存在，你是没法办装的，得让这个文件的所有者或者具有sudo 权限的管理员将其删除，同样，你安装完后也会生成这个文件，记得使用 rm -rf cuda-installer.log删掉！！

cd /tmp
ls -l cuda-installer.log    #查看文件信息

 删除

sudo 登录

sudo rm -rf cuda-installer.log

再次查看

ls -l cuda-installer.log    #查看文件信息

如果报no such file or directory表示不存在该文件，按照一下步骤安装CUDA toolkit

[@localhost software]$ sh cuda_11.8.0_520.61.05_linux.run
Log file not open.
cuda_11.8.0_520.61.05_linux.run: line 524: 2195323 Segmentation fault      (core dumped) ./cuda-installer
┌─┐
│  End User License Agreement                                                  │
│  -                                                                           │
│                                                                              │
│  NVIDIA Software License Agreement and CUDA Supplement to                    │
│  Software License Agreement. Last updated: October 8, 2021                   │
│                                                                              │
│  The CUDA Toolkit End User License Agreement applies to the                  │
│  NVIDIA CUDA Toolkit, the NVIDIA CUDA Samples, the NVIDIA                    │
│  Display Driver, NVIDIA Nsight tools (Visual Studio Edition),                │
│  and the associated documentation on CUDA APIs, programming                  │
│  model and development tools. If you do not agree with the                   │
│  terms and conditions of the license agreement, then do not                  │
   download or use the software.

   Last updated: October 8, 2021.


   Preface
   -

 ─
  Do you accept the above EULA? (accept/decline/quit):

键入accept

除了cuda toolkit其他全部取消，然后进入options

 然后进入options，把X全部去掉

进入change path更改路径，因为没有root权限，没办法放入默认路径，因此更改为自己的路径即可，我更改为/home1/username/cuda-11.8(需要提前自己创建 mkdir /home1/username/cuda-11.8)

 

 

回到options界面，修改library install path，

 在刚刚的路径后面新建一个mylib文件夹

回到主界面，选择install开始安装（需要等待一会），

安装好后界面如下

# <<< conda initialize <<<
 
export LD_LIBRARY_PATH=/home/xxx/cuda-11.3/lib64:${LD_LIBRARY_PATH}
export CUDA_INSTALL_DIR=/home/xxx/cuda-11.3
 
export CUDA_HOME=/home/xxx/cuda-11.3
export CUDA_PATH=/home/xxx/cuda-11.3
export PATH=${CUDA_HOME}/bin:$PATH

按 i 进入insert 模式，粘贴后按 Esc，再输入 :wq 进行保存并退出

执行下列命令让更改立即生效

source ~/.bashrc

[xxx@localhost ~]$ nvcc -V
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2021 NVIDIA Corporation
Built on Sun_Mar_21_19:15:46_PDT_2021
Cuda compilation tools, release 11.3, V11.3.58
Build cuda_11.3.r11.3/compiler.29745058_0

大功告成！ 

[xxx@localhost ~]$ sh cuda_11.3.0_465.19.01_linux.run
===========
= Summary =
===========

Driver:   Not Selected
Toolkit:  Installed in /home/xxx/cuda-11.3/
Samples:  Not Selected

Please make sure that
 -   PATH includes /home/xxx/cuda-11.3/bin
 -   LD_LIBRARY_PATH includes /home/xxx/cuda-11.3/lib64, or, add /home/xxx/cuda-11.3/lib64 to /etc/ld.so.conf and run ldconfig as root

To uninstall the CUDA Toolkit, run cuda-uninstaller in /home/xxx/cuda-11.3/bin
***WARNING: Incomplete installation! This installation did not install the CUDA Driver. A driver of version at least 465.00 is required for CUDA 11.3 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-installer.log
[xxx@localhost ~]$ vim ~/.bashrc
[xxx@localhost ~]$ source ~/.bashrc
[xxx@localhost ~]$ nvcc -V
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2021 NVIDIA Corporation
Built on Sun_Mar_21_19:15:46_PDT_2021
Cuda compilation tools, release 11.3, V11.3.58
Build cuda_11.3.r11.3/compiler.29745058_0

3 安装并管理多版本CUDA 

按照上述步骤下载安装，最后将.bashrc中CUDA 的路径更改一下即可。