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This tip is about the how to install CUDA on Ubuntu 20.04 LTS Linux. So read this free guide, How to install CUDA on Ubuntu 20.04 LTS Linux step by step. If you have query related to same article you may contact us.

How to install CUDA on Ubuntu 20.04 LTS Linux – Guide

The Nvidia CUDA toolkit is an extension of the GPU parallel computing platform and programming model. Installing Nvidia CUDA consists of ingesting the official Nvidia CUDA repository, followed by installing the relevant metapackage and setting the path of the CUDA executable binaries. The complete form of CUDA is Compute Unified Device Architecture. CUDA is a parallel computing platform and programming model developed by NVIDIA. It is used to run programs on NVIDIA graphics processing units (GPUs) to dramatically speed up up computer applications.

In this guide we will show you how to install CUDA on Ubuntu 20.04 LTS from the official Ubuntu package repository. We also show you how to install the latest version of CUDA on Ubuntu 20.04 LTS from NVIDIA’s official package repository. We will also show you how to write, compile and run your first CUDA program.

How to install CUDA on Ubuntu 20.04 LTS Linux

Install CUDA from Ubuntu repository

Start by updating the package lists on your Ubuntu 20.04 instance.

Then install the CUDA toolkit using the APT package manager as follows. Please note that the installation is intensive and as such ensure you have a fast and stable internet connection and a minimum of 10G of disk space.

$ sudo apt install nvidia-cuda-toolkit

Once the installation is complete, we need to add CUDA to the PATH to notify the shell of the CUDA location. To do this, we will specify the PATH in the .bashrc file. So open the file using your command line text editor.

At the final from the file, copy and paste the following lines of code.

# define PATH for installing cuda 10.1

And if [ -d “/usr/local/cuda-10.1/bin/” ]; then

export PATH=/usr/local/cuda-10.1/bin${PATH:+:${PATH}}

export LD_LIBRARY_PATH=/usr/local/cuda-10.1/lib64${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}

Then reload the changes to the .bashrc file.

Now check and confirm the installed CUDA version using the following command.

Install CUDA from the CUDA repository

As mentioned earlier, the CUDA repository provides the latest version of CUDA. So, if you want to install the latest version, follow the instructions outlined here.

First, download the pin from the CUDA repository:

$wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64/cuda-ubuntu2004.pin

Then move the pin to the /etc/preferences.d directory and rename it cuda-repository-pin-600.

$ sudo mv cuda-ubuntu2004.pin /etc/apt/preferences.d/cuda-repository-pin-600

Then download the Debian CUDA file. Be notified that the file is too large – 2.3G to be precise at the time of writing this guide. Make sure you have a good internet connection and ample disk space.

$ wget https://developer.download.nvidia.com/compute/cuda/11.4.2/local_installers/cuda-repo-ubuntu2004-11-4-local_11.4.2-470.57.02-1_amd64.deb

Once downloaded, use the dpkg utility to run the file.

sudo dpkg -i cuda-repo-ubuntu2004-11-4-local_11.4.2-470.57.02-1_amd64.deb

Then install the CUDA GPG key as follows:

$ sudo apt-key add /var/cuda-repo-ubuntu2004-11-4-local/7fa2af80.pub

Finally, update the package lists and install CUDA using the APT package manager.

$ sudo apt update

$ sudo apt install cuda -y

Final note

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