> Can anyone comment on why Pixar uses standard CPU for processing instead of custom hardware or GPU? A GPU enabled version of RenderMan is just coming out now

> Can anyone comment on why Pixar uses standard CPU for processing instead of custom hardware or GPU? A GPU enabled version of RenderMan is just coming out now. I imagine their farm usage after this could change. https://gfxspeak.com/2020/09/11/animation-studios-renderman/ https://gfxspeak.com/2020/09/11/animation-studios-renderman/ I’m purely speculating, but I think the main reason they haven’t been using GPUs until now is that RenderMan is very full featured, extremely scalable on CPUs, has a lot of legacy features, and it takes a metric ton of engineering to port and re-architect well established CPU based software over to the GPU.