VRAM usage at different resolutions

[HenkDz]

What is the largest size I can get with my RTX 3090 24GBvRAM?

[hlky]

VRAM usage at different resolutions is something that needs documenting, larger resolutions require more vram, and from my previous tests it's roughly linear, for example, an image that was 512x512 used around 6gb, and an image that was 512x1024 (double the size), used just under 12gb.

Accidentally lost the resolution you were trying when I changed the title but I think it was 768x832 which is roughly 22% larger than 512x1024 so I would expect it to use roughly 22% more vram

So then, I'm not sure why you are running out of vram considering you have 24gb, are you running with full precision? full precision increases vram usage, if you're not sure, that means you haven't specifically enabled full precision, half precision is default

Do you happen to have other things open using vram, games, videos, even web browser uses vram

Btw, vram usage in the webui is subject to change because we use other models as well i.e. gfpgan and esrgan, you can always try removing the model files for those to stop them being loaded

[hlky]

Also, as already asked, are you running with full precision? full precision increases vram usage, if you're not sure, that means you haven't specifically enabled full precision, half precision is default

[HenkDz]

I didn't specify anything, so it is running on half precision by default.

[hlky]

we use other models as well i.e. gfpgan and esrgan, you can always try removing the model files for those to stop them being loaded to reduce vram

if a large image is what you're after consider just using the esrgan tab on any images you want upscaled, also usable on generation but generally you won't want every image generated to be upscaled

[HenkDz]

I thought the double image was fixed??? Disabling save grid as a workaround.

[hlky]

It should be, update

[HenkDz]

Still struggling with memory management. Very low resolution. 512x640. 60 Steps and 10 images (separate not a batch)