Terminate running sampler

[BrechtCorbeel]

Whenever a sampler starts I know I'm in for trouble, because either you cannot terminate a sampler unless restarting or I do not know about it why is that not possible? Currently stopping a workflow only works after the next step is finished and if a sampler goes haywire, you are screwed.

[JorgeR81]

Hopefully, we may at least have an indication that the generation is being terminated. 
Comfy-Org/ComfyUI_frontend#695

[blepping]

@BrechtCorbeel i don't think i've ever seen a sampler go haywire but i made you a simple custom node that may make interrupts during sampling more responsive: https://gist.github.com/blepping/99aeb38d7b26a4dbbbbd5034dca8aca8

all it does is patch input/output blocks and checks to see if an interrupt occurred before actually letting the model block run. you will have a ModelPatchFastTerminate node once you put it in custom_nodes and restart ComfyUI/refresh the browser.

this approach will only work for models that ComfyUI supports model patches on, so basically only SD1x/2x and SDXL. Unfortunately it won't work for more esoteric models like Flux which can't be patched.