Hm, looks like this is an old project (2022) associated with HuggingFace (https://huggingface.co/bigscience).

Doesn't look like it's very active nowadays: https://github.com/bigscience-workshop/petals

Article with more details: https://techcrunch.com/2022/12/20/petals-is-creating-a-free-...

> [...] volunteers can donate their hardware power to tackle a portion of a text-generating workload and team up others to complete larger tasks, similar to Folding@home and other distributed compute setups.