If you've already paid for and reserved a whole cluster of GPUs, any idle capacity is capacity you've already paid for. Using it is effectively free. So might as well use it to solve fun math puzzles.
Though, it would make more financial sense to mine crypto.
kinda bearish for the data center rollouts if the spare compute can be used to solve math puzzles instead of training LLMs
More details: https://x.com/sweis/status/2101484464807596264