# OpenCL Installation

To mine on your GPUs you need to install GPU drivers with OpenCL support.

You can check whether your GPU has a working OpenCL support with the clinfo command. Install this program with

sudo apt install clinfo

Then start it by typing

clinfo

In our case we don't have any GPU drivers installed that support OpenCL:

The installation procedure depends on your GPU vendor.

Our GPU is an AMD Radeon RX 5600 XT but clinfo does not detect any OpenCL installation for it yet. Visit the AMD support site https://www.amd.com/en/support and select the GPU model:

Then we need to install the downloaded deb package.

sudo amdgpu-install --usecase=workstation,rocm,opencl --opencl=rocr,legacy --vulkan=pro --accept-eula

This will command will take a while downloading and installing more than 2GB worth of packages.

Now try clinfo agian:

The AMD OpenCL platform is now detected but there are no devices. This is because you need to add your user to the render group:

sudo adduser $USER render

Now reboot your system. If you try clinfo again you now see the GPU device:

First download your driver from https://www.nvidia.de/Download/index.aspx?lang=en-us by selecting your GPU model and clicking on "Aggree Download".

The downloaded file is a sh script and we need to make it executable. So we navigate to the Downloads directory and execute

chmod a+x NVIDIA-Linux-x86_64-535.112.01.run

Of course you need to insert your exact filename here.

sudo ./NVIDIA-Linux-x86_64-535.112.01.run

we get this error:

This means we need to execute the script no a lower run level without an X server running. In addition we must blacklist the default nouvaeu driver with this command:

echo -e "blacklist nouveau\noptions nouveau modeset=0" | sudo tee /etc/modprobe.d/blacklist-nouveau.conf

Now reboot your system. Once rebooted you should switch to a lower run level. To do this press the three keys CTRL + ALT + F3 at the same time. You should see a black screen with login prompt like this:

Ubuntu 220.4.3 LTS pc tty3

pc login: _

Log in with your user name and password and then switch to a lower run level with

sudo init 3

You can now start the installation as above, navigate to the Downloads directory and start the installation:

cd ~/Downloads
sudo ./NVIDIA-Linux-x86_64-535.112.01.run

You should see these screens, just select "Confirm installation", then "Yes", "Yes", "OK".

Now that the NVIDIA driver installation is complete restart your system again you should be able to see your device in the clinfo command: