kohya-ss / kohya-ss/sd-scripts
Cannot extract Lora from Safetensors model trained in Kohya, model also produces NaNs in Automatic1111
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- Python
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Description
Everything goes allright until SVD comes in:
`calculating by svd
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svd(args)
File "C:\AI\kohya_ss\networks\extract_lora_from_models.py", line 116, in svd
U, S, Vh = torch.linalg.svd(mat)
torch._C._LinAlgError: linalg.svd: The algorithm failed to converge because the input matrix is ill-conditioned or has too many repeated singular values (error code: 319).`
Changing the precision doesn't help, neither does changing to cpu.
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Research direction
Start at networks/extract_lora_from_models.py, especially the svd entry point and torch.linalg.svd call at line 116. Reproduce the Kohya-trained Safetensors extraction failure and inspect the matrix values and convergence warning; done means the extraction completes without the reported SVD error.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python, pytorch
- Domain
- machine-learning
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100