Qwen Image Edit silently crashes with PyTorch CUDA 13 but works with CUDA 12 on RTX 3090
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Description
### Custom Node Testing
- [ ] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)
### Expected Behavior
The Qwen Image Edit workflow should run normally on PyTorch CUDA 13 without closing ComfyUI, as it does in my CUDA 12 environment on the same computer.
### Actual Behavior
Qwen Image Edit works correctly in my PyTorch CUDA 12 environment on the same computer.
However, when using ComfyUI Windows Portable with Python 3.13 and PyTorch 2.9.1+cu130, ComfyUI closes silently shortly after loading the Qwen text encoder.
The final visible log lines are:
Requested to load QwenImageTEModel_
loaded completely; 7910.28 MB loaded, full load: True
Shortly afterward, python.exe closes without a Python traceback, and the batch window shows:
Press any key to continue...
### Steps to Reproduce
1. Start ComfyUI Windows Portable with Python 3.13 and PyTorch 2.9.1+cu130.
2. Open the Qwen Image Edit workflow.
3. Load an input image.
4. Press Queue.
5. Wait for the Qwen text encoder to finish loading.
6. ComfyUI closes silently shortly afterward.
I also tried starting ComfyUI with:
--disable-pinned-memory --disable-async-offload --disable-cuda-malloc
The crash still occurred.
### Debug Logs
```powershell
The complete terminal log is attached in the “Other” section as comfyui_qwen_full_log.txt.
The final visible log lines before the silent crash are:
Requested to load QwenImageTEModel_
loaded completely; 7910.28 MB loaded, full load: True
Immediately afterward, python.exe exits silently. No Python traceback, CUDA out-of-memory error, or other error message is displayed.
```
### Other
System information:
- Operating system: Windows
- GPU: NVIDIA GeForce RTX 3090 24GB
- CPU: AMD Ryzen 5 5500
- System RAM: 32GB
- Python: 3.13
- PyTorch: 2.9.1+cu130
- ComfyUI installation: Windows Portable
- NVIDIA driver: Studio Driver
The same Qwen Image Edit workflow works correctly in my other environment using Python 3.12.3 and PyTorch CUDA 12.x on the same computer.
No CUDA out-of-memory error or Python traceback is displayed.
This behavior appears similar to issue #11803:
https://github.com/Comfy-Org/ComfyUI/issues/11803
I can provide the workflow JSON, Windows Event Viewer report, or a crash [dump]([url](
[comfyui_qwen_full_log.txt](https://github.com/user-attachments/files/30371849/comfyui_qwen_full_log.txt)
Contributor guide
Research direction
Start by reproducing the Qwen Image Edit workflow in the Windows Portable environment with Python 3.13 and PyTorch 2.9.1+cu130, then inspect comfyui_qwen_full_log.txt and compare the behavior with issue #11803. Done means the workflow completes without python.exe exiting silently after QwenImageTEModel_ loads.
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
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100