Beyond the limits of physical VRAM

Summary

Earlier this year, Natalie Vock made a splash with a set of patches to the Linux kernel that greatly increased performance on AMD GPUs with lower amounts of VRAM. With that work now accepted by upstream, Vock decided to turn their attention to another interesting problem: what if you run out of VRAM, and how can we improve performance when we do? Regardless, what I hope this blogpost can demonstrate is that even if you end up with some memory evicted to system RAM, the slowdown can be managea...