comfyui
https://github.com/comfyanonymous/comfyui
Python
The most powerful and modular diffusion model GUI, api and backend with a graph/nodes interface.
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- Issues
- ImageRemBG (BiRefNet) crashes with "expected scalar type Float but found Half"
- AIMDO host buffer grows until exhausted during a long single prompt: 618x hostbuf_grow ERROR, ~12% slowdown (Krea2 + LoRA, DynamicVRAM)
- --use-flash-attention is ignored by the memory estimator, causing a 7.5x overestimate → forced partial load / PCIe thrashing (AMD, torch wheels without aotriton)
- [Bug] CUDA illegal memory access / HostBuffer.truncate failed with comfy-kitchen 0.2.31 during dynamic VRAM load (MiniMaxH3)
- wrong
- LTX-2.5 gemma4 text encoder: LTXAVTextEncoderLoader forces CLIPType.LTXV (T5) and requires a non-existent checkpoint; LTXVAudioVAELoader reads checkpoints/ instead of vae/
- safetensors "file not fully covered": checkpoints with trailing bytes load only when DynamicVRAM is active, and load_torch_file's friendly errors are dead code on safetensors 0.8
- Windows fatal access violation constructing LTX-2.5 VAE diffusion decoder after sampling — DiT not evicted before decode on 32GB GPU
- HTTP interface call v0.33
- MiniMax H3-audio always has static and popping sounds.
- Docs
- Python not yet supported