incoherent output on mps

[haiggoh]

Doesn't work on mps. There's already a support thread in the pytorch issues where the bug has been repruduced: pytorch/pytorch#141471

Apparently people get usable results on mps with torch 2.4.1 so something specific LTX Video does on mps seems to work only with older versions of torch but is no longer compatible with torch 2.5.1 or higher

[koozmoto]

thank god im not the only one.... but i saw a youtuber just posted like 14 hours ago and just followed his steps and it took me 2 hours to get it working because it was missing so much extra stuff within model_management.py

only to get those results. but I also think this node set and models are still only CUDA compatible. Not 100% sure tho. Ugh another sad day for Mac users.

[cchance27]

The builtin version and pretty sure these extensions work fine on MPS, i literally just made a video (i opened the pytorch issue)... just downgrade torch to 2.4.1 and everything works as normal for ltx in comfy.

Not sure why oyur messing with model_management or taking 2 hours to get it working, clone newest comfy release clean, install 2.4.1 pytorch... load workflow ... render ...