Someone looked into running graphics on the A100, which is the H100's predecessor. He found that it supports OpenGL:

https://www.youtube.com/watch?v=zBAxiQi2nPc

I assume someone is doing rendering on them given the OpenGL support. In theory, you could do rendering in CUDA, although it would be missing access to some of the hardware that those who work with graphics APIs claim is needed for performance purposes.