安装CUDA

官方网站https://developer.nvidia.com/cuda-downloads

选择Linux-》X86_64-》ubuntu-》20.04-》deb(local)

wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64/cuda-ubuntu2004.pin
sudo mv cuda-ubuntu2004.pin /etc/apt/preferences.d/cuda-repository-pin-600
wget https://developer.download.nvidia.com/compute/cuda/11.5.1/local_installers/cuda-repo-ubuntu2004-11-5-local_11.5.1-495.29.05-1_amd64.deb
sudo dpkg -i cuda-repo-ubuntu2004-11-5-local_11.5.1-495.29.05-1_amd64.deb
sudo apt-key add /var/cuda-repo-ubuntu2004-11-5-local/7fa2af80.pub
sudo apt-get update
sudo apt-get -y install cuda

配置环境变量

sudo gedit ~/.bashrc

export PATH=/usr/local/cuda-11/bin${PATH:+:${PATH}}
export LD_LIBRARY_PATH=/usr/local/cuda-11/lib64${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}

刷新环境变量：source ~/.bashrc