I got my Mac Studio with M1 Ultra and 128g of RAM specifically for this reason, in case I needed it. Definitely not using its full capacities for any other purpose, though it's nice to be able to run 10 instances of a big data-grinding program at once, overnight.

Still waiting on 'consumer' AI training facilities I can practically use: it's a bit arcane, not up to speed on that. I can generate text up to Llama 70b if I'm patient, and generate images and sort-of-video quite easily.