As mentioned, you'll need to ensure your /etc/fahclient/client.xml includes: <config> <!-- Folding Slots --> <slot id='0' type='CPU'/> <slot id='

As mentioned, you'll need to ensure your /etc/fahclient/client.xml includes: <config> <!-- Folding Slots --> <slot id='0' type='CPU'/> <slot id='1' type='GPU'/> </config> If you check your logs in /var/lib/fahclient/logs, you'll probably see something like: CUDA Device 0: Platform:0 Device:0 Bus:51 Slot:0 Compute:7.5 Driver:10.2 OpenCL: Not detected: Failed to open dynamic library 'libOpenCL.so': libOpenCL.so: cannot open shared object file: No such file or directory Take that missing library over to the Ubuntu Package Search[0] and it will lead you to ocl-icd-opencl-dev apt install ocl-icd-opencl-dev Restart fahclient and you should see something like: CUDA Device 0: Platform:0 Device:0 Bus:51 Slot:0 Compute:7.5 Driver:10.2 OpenCL Device 0: Platform:0 Device:0 Bus:51 Slot:0 Compute:1.2 Driver:440.64 [0] https://packages.ubuntu.com/search?suite=bionic&arch=amd64&mode=exactfilename&searchon=contents&keywords=libOpenCL.so https://packages.ubuntu.com/search?suite=bionic&arch=amd64&m...