lllyasviel / lllyasviel/stable-diffusion-webui-forge
IMG2IMG: RuntimeError: The size of tensor a (65) must match the size of tensor b (66) at non-singleton dimension 3
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Description
Hello !
When i try to make a IMG2IMG with Flux with Neveroom checked, i have this error:
```
"RuntimeError: The size of tensor a (65) must match the size of tensor b (66) at non-singleton dimension 3
Time taken: 31.6 sec.
A: 0.32 GB, R: 0.38 GB, Sys: 1.2/4 GB (30.1%)"
```
```
Never OOM Integrated
▼
X Enabled for UNet (always maximize offload)
X Enabled for VAE (always tiled)
```
Prompt:
a clear black and white photo. a girl in a dress, a baby standing on a chair, a little girl standing in a dress
I can do IMG2IMG with others pictures but not this this one....
Thanks !



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Research direction
Start by reproducing IMG2IMG with Flux, Never OOM enabled, and the attached image, then inspect the reported tensor-size mismatch at dimension 3. The issue does not name a file, test, or entry point; done means this image can complete IMG2IMG without the 65-versus-66 runtime error.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- computer-vision, machine-learning
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100