clinfo Does Not Print Anything

Note

This is an Ubuntu issue only.

Requirements

• clinfo

On Ubuntu, you may need to add your user as part of the render and/or video groups for OpenCL to work.

Ubuntu 24.04

OpenCL will not work if your user is not part of the render group and the video group.

Ubuntu 22.04

OpenCL will not work if your user is not part of the render group and the video group.

Ubuntu 20.04

OpenCL will not work if your user is not part of the render group.

Ubuntu 18.04

Note

Support for Ubuntu 18.04 is removed since SDK 2.10. To see Ubuntu 18.04 instructions for an earlier SDK version, change the Knowledge Base version in the top left corner.

Open a terminal window by pressing Ctrl + Alt + T keys on the keyboard, then add your user to the correct group:

Ubuntu 24.04

sudo gpasswd -a $USER render
sudo gpasswd -a $USER video

Ubuntu 22.04

sudo gpasswd -a $USER render
sudo gpasswd -a $USER video

Ubuntu 20.04

sudo gpasswd -a $USER render

Restart your PC:

sudo reboot

Open a terminal window by pressing Ctrl + Alt + T keys on the keyboard, then execute the following commands:

/usr/bin/clinfo -l

This will print all available information about all OpenCL platforms on the system and the devices they expose.

Alternatively, if you do not want to add your user to the group mentioned above, you can use sudo:

sudo /usr/bin/clinfo -l

In case the number of platforms is equal to 0 you need to install OpenCL drivers.