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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.run2 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。
