I just enabled CPU tasks for GFN-22.
Don't be stupid, please. These are insanely long tasks. If your computer isn't running 24/7, don't even try. It will take a Haswell-class desktop (i.e., FMA3-capable Intel or Zen 2 AMD) over three weeks to run one of these on a single core.
In most cases, having hyperthreading enabled is a really, really bad idea.
It's strongly suggested to use app_info.xml to enable multi-threading.
(Multi-threading isn't supported at this time.)
If any of this doesn't make sense to you, please do both yourself and your potential wingmates a favor and either run the GPU app instead or just run something else.
My lucky number is 75898524288+1