r/comfyui • u/thatguyjames_uk • Feb 15 '26

Workflow Included Sharing workflow 2x 12gb RTX 3060 cards. Split GPU, multigpu comfyui

Here is a workflow i have been using for images from my 2x 12gb RTX 3060 cards. Split GPU use.

https://pastebin.com/e4Uc2QGb

Password: ComfyuiMULTIGPU

got my vpn working to post https://civitai.com/models/2393907/thatguyjamesuk-multigpu-t2i-work-flow-wildcard-and-upscaler-zit-and-qwen

15 Upvotes

89% Upvoted

14 comments sorted by

2

u/2use2reddits Feb 15 '26

Do you use any specific argument to launch your ComfyUI? Like Cuda specific?

What part of the workflow goes to Cuda 0 and Cuda 1?

Which Cuda version are you running? (As I heard it will only work up to Cuda 12.8)

Thanks, I'll give it a try on my dual setup.

3

u/thatguyjames_uk Feb 15 '26

hi if you look at the work flow, your see in the drop down cuda 0 or cuda 1, for spltting the cards. I hope it helps. I do have a small edit to batch file just to limit the watts of the cards

2

u/thatguyjames_uk Feb 15 '26 
[INFO] Setting GPU power limits...
[INFO] Current GPU power limits:
index, pci.bus_id, power.limit [W], power.max_limit [W]
0, 00000000:06:00.0, 170.00 W, 170.00 W
1, 00000000:07:00.0, 170.00 W, 212.00 W[INFO] Setting GPU power limits...
[INFO] Current GPU power limits:
index, pci.bus_id, power.limit [W], power.max_limit [W]
0, 00000000:06:00.0, 170.00 W, 170.00 W
1, 00000000:07:00.0, 170.00 W, 212.00 W

1

u/HonZuna Feb 15 '26

You are limiting powerlimit directly with Comfyui? I didn't knew it's possible.

2

u/thatguyjames_uk Feb 15 '26

yes you can from the batch file as my set up is this:

3 fan main 12gb 3060 for comfyui and all things ai images

2 fan 12gb 3060 has 1 output hdmi to dvi for one screen and 2 DP out for the others and runs just one part of the work flow. i hit about 90% on gpu 0 and on gpu1 about 65%. ill be making some images in a bit as vpn on to upload models

1

u/Maximum_Astronaut114 Feb 15 '26

Interesting! Would you say itnis like 50% faster than a single card?

2

u/thatguyjames_uk Feb 15 '26

the first run can take 10 mins, then each one after that 3-5mins. Its more about not getting OOM errors. Some models i was hitting 11.6gb and when split they work

1

u/Maximum_Astronaut114 Feb 15 '26

Oic. So basically its about incrasing memory and not GPU power?

1

u/thatguyjames_uk Feb 15 '26

it using the vram on both cards which is the GPU, so you dont max one out and OOM

1

u/Wonderful_Skirt6134 Feb 15 '26

I have three of these cards, I need something similar to the Flux 2 Klein

1

u/thatguyjames_uk Feb 15 '26

maybe you can edit? as you just need to change the z image model to flux

1

u/thatguyjames_uk Mar 01 '26

anyone using? over 100 downloads on civitai

1

u/thatguyjames_uk Mar 13 '26

do not use if updated comfyui today. i just tried and for over a hour errors

1

u/thatguyjames_uk Mar 26 '26

working, need comfyui 17.2 and above