Qwen-image Ksampler crash

[skypavel98]

I’m having an issue with qwen-image. It crashes during the ksampler process. Comfy completely shuts down without showing any errors. Could this be related to the fact that I only have 8GB of VRAM? I’ve loaded large models before, but Comfy has never crashed like this.

under KSampler I now see this failed in cmd, but I’m not sure if it’s related to the crashes:
assertion failed: false, file C:\Users\muyangl\actions-runner_work\nunchaku\nunchaku\src\kernels\awq../dispatch_utils.h, line 30

[Piscabo]

Get a similar error that refers to "muyangl": (who is that?)
RuntimeError: CUDA error: an illegal memory access was encountered (at C:\Users\muyangl\actions-runner_work\nunchaku\nunchaku\src\kernels\zgemm\gemm_w4a4_launch_impl.cuh:120)

[altoiddealer]

Rather than opening a new issue, I'll piggyback here...

• I just updated ComfyUI.
• Updated Nunchaku to the new dev version.
• Installed the correct wheel for my environment.
• Loaded the default Qwen workflow from your repository

When it reaches the KSampler...

[oscarchuncha]

#476

[3qyemo]

The same error occurs: when it comes to the K sampler, comfyui crashes.

[WuMIn259]

It seems that there is a problem with "Memory Uninstall", wait patiently for the update
I have this problem with my 12G graphics card

[Rogal80]

I have occasionally this issue on 3090% even when VRAM is just only 68% loaded, it's on sampler after, some steps just freeze and the same comment "press any k...."

[lmxyy]

should have been fixed in nunchaku and ComfyUI-nunchaku v1.0.0.