Feature request: GPU affinity (WGL_NV_gpu_affinity)

[cxw42]

I am helping organize a Shader Showdown, and we may need to render on the dual-NVidia compo machine. If so, we will run two Bonzomatic processes concurrently, and drive them programmatically. Would you be willing to add WGL_NV_gpu_affinity support so we could be sure each process was only using one of the GPUs? I found an implemented example of querying, and a more complex example here that includes rendering. Thanks for considering this request!

[Gargaj]

Wouldn't it be easier if you'd just fork it for yourself first and do a test run?

[cxw42]

Yep, already forked it :) . But I have never worked with this codebase, so I thought I'd ask in case it was something easy for developers who know what they're doing :D .

[Gargaj]

It's OpenGL, noone really knows what they're doing :)

[cxw42]

OK - I have an initial Nvidia version. Would someone with two NV GPUs please try the fork and let me know if it works? Set window.gpu=0 in config.json.

My 1050 Ti doesn't support WGL_NV_gpu_affinity, and I think that might be because it's the only card in the system. (Other thoughts welcome!)

[cxw42]

Well, Demosplash's dual Titan X also doesn't support affinity. :/ Anybody have a couple of Quadros lying around? :) (per this, p. 2, first full sentence)