about multi-gpu

[Kotori05]

Advice Request
tiled vae is really a good idea, is it possible to use on multiple GPU environment? (cuda out of memory!)

[Kahsolt]

Yes multi-GPU can be helpful for tiled-VAE, since the main bottleneck for tiled-VAE forward is the GroupNorm sync :)
but the sd-webui seems not to handle multi-GPU case, it is not considered to impl that in this repo