comfyui-launch-flags

# ComfyUI launch/performance flags ## Overview CLI flags passed to `main.py` control ComfyUI's runtime behavior (e.g. `python main.py --reserve-vram 2 --use-sage-attention`). The three that matter most for making a graph *run* rather than OOM or crawl are the VRAM strategy, the attention backend, and the cache mode. This skill is the decision matrix for choosing them. > ⚠️ **Verification note (August 2026).** Every flag below was checked against > upstream [`comfy/cli_args.py`](https://github.com/comfyanonymous/ComfyUI/blob/master/comfy/cli_args.py) > on current master. ComfyUI adds/renames flags often — when in doubt run > `python main.py --help` in the target install and prefer that over this list. > **`--enable-triton-backend` / `--disable-triton-backend` ARE ComfyUI `main.py` > flags on master** (they used to be documented as SwarmUI-only; that is stale). > `--use-ck-attention` is kitchen INT8 attention — no `sageattention` wheel. > A June ComfyUI checkout still pins comfy-kitchen 0.2.10 and lacks > `--use-ck-attention`; `kitchen` action:"status" reports ComfyUI-side flag > support, not only the kitchen version. Use `kitchen` / `panel_kitchen` to see > what this GPU can actually run. > How to apply today. The MCP's `restart_comfyui` (with `action: "start"`) > currently *replays the exact argv of the previous run*. It does not compose > fresh flags. So set these when you launch ComfyUI yourself (the > `python main.py …` line, a `run.bat`/shell alias, or the SwarmUI bac...