Frank
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The 2026-10-09 wire aliases become the service names everywhere: systemd units, serve scripts, env files and FRANK_* variables, deploy-plan/deploy-remote service keys, container names, Prometheus job names + alert rules, Grafana dashboard queries, bats seams, runbook filenames, homepage/AGENTS lore, and historical prose. Rollback tags renamed in lockstep. Residue in the tree: zero. Retired frank-medium/small/npu names are history and stay. Known casualty: scripts/patches/*.patch context lines were rewritten; those retired-era vLLM-fork patches no longer apply byte-exact.
122 lines
6.2 KiB
Markdown
122 lines
6.2 KiB
Markdown
---
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type: howto
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description: "Qwen-Image 2.1 workflows on Dankclaw: two proven txt2img workflows (art + legible text), the API recipe, and which models/LoRAs to add next."
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tags:
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- dankclaw
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- comfyui
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- qwen-image
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timestamp: 2026-10-05
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---
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# ComfyUI Qwen-Image Workflows
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Two ready-to-load text-to-image workflows for the Qwen-Image 2.1 payload
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already on Dankclaw, both proven end-to-end on 2026-10-05 by POSTing to the
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live API on port 8188 and verifying the rendered PNG. The repo copies are the
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source of truth; the host copies under `/home/dank/comfyui-data/workflows/`
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are for convenience.
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## What is on disk
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| Path (under `/home/dank/comfyui-data/models/`) | Size | Role |
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|---|---|---|
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| `diffusion_models/qwen_image_2.1_int8_convrot.safetensors` | 6.8 GB | **The one the workflows use** — int8-convrot quant, ComfyUI-core native |
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| `diffusion_models/qwen_image_2.1_bf16.safetensors` | 14 GB | Full-precision fallback |
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| `diffusion_models/qwen-image-2.1-Q8_0.gguf` (+ `-arch`) | 7.1 GB | GGUF alternative (needs ComfyUI-GGUF custom node) |
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| `text_encoders/qwen3vl_8b_w4a8.safetensors` | 5.9 GB | **The one the workflows use** — 4-bit-weights/8-bit-act Qwen3-VL 8B encoder |
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| `text_encoders/qwen3vl_8b_int8_convrot.safetensors` | 8.8 GB | Mid quant |
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| `text_encoders/qwen3vl_8b_bf16.safetensors` | 17 GB | Full precision |
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| `vae/qwen_image_2.1_vae_bf16.safetensors` | 645 MB | 2.1 VAE (used) |
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| `vae/qwen_image_vae.safetensors` | 243 MB | Smaller VAE |
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No LoRAs are on disk yet — see [Recommended additions](#recommended-additions).
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## The workflows
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Both are API-format JSON (ComfyUI 0.37 loads them via the UI's **Load** dialog
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too): `dankclaw/comfyui/workflows/` in the repo,
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`/home/dank/comfyui-data/workflows/` on the host. Node chain in both:
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```
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UNETLoader (int8_convrot) ──┐
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CLIPLoader (qwen_image, w4a8) ─┤ CLIPTextEncode pos/neg
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VAELoader (2.1 bf16) ────────┤
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EmptySD3LatentImage ─────────┴─ KSampler ─ VAEDecode ─ SaveImage
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```
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**Common sampler settings:** `cfg 1.0` (Qwen-Image 2.1 expects CFG-free
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sampling), `euler` + `simple`, seed fixed in the file.
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| Workflow | File | Shape | Steps | Made for |
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|---|---|---|---|---|
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| Art | `qwen-image-2.1-t2i-art.json` | 1024×1024 | 20 | General illustration/prose prompts |
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| Legible text | `qwen-image-2.1-t2i-legible-text.json` | 832×1216 | 25 | Posters, captions, any in-image text |
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### Legible-text prompt recipe
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Qwen-Image 2.1 is one of the best open-weight text renderers, but only if the
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prompt is written for it:
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1. **Quote the exact strings**: `large bold white text reading "SOLIDARITY OF
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THE SOVIET COMPUTER SYSTEMS"` — quoted text is rendered literally.
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2. **Describe layout, not vibes**: say *centered / below it / large vs small*,
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the typeface family (sans-serif), and the color.
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3. **Say what NOT to draw**: end with `no other words, no watermark`.
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4. Keep the negative side on `misspelled, warped letters, extra text` (already
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in the workflow).
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5. More steps help text: the text workflow uses 25 vs 20.
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Verified render: `SOLIDARITY OF THE SOVIET COMPUTER SYSTEMS` + `DANKCLAW
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DANKSERVER EST 2026` came back crisp and correctly spelled at 832×1216
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(`qwen21-text_00001_.png`, 953 KB). One caveat from the same render: a
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shorter secondary line is where misspellings creep in — proofread the first
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render before shipping.
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## Driving it from the API
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ComfyUI 0.37 **requires the graph wrapped in a `prompt` key** — a bare
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`{node-id: node}` body gets `{"error": {"type": "no_prompt"}}` (verified
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2026-10-05):
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```bash
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curl -s -X POST http://127.0.0.1:8188/prompt -H 'Content-Type: application/json' \
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-d "$(python3 -c 'import json;print(json.dumps({"prompt": json.load(open("dankclaw/comfyui/workflows/qwen-image-2.1-t2i-art.json"))}))')"
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# -> {"prompt_id": "...", ...}
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curl -s http://127.0.0.1:8188/history/<prompt_id> # status.status_str == "success"
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```
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Outputs land in `/home/dank/comfyui-data/output/`. The queue is FIFO — the
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two workflows above ran back-to-back unattended.
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**Note:** the container's UI-saved workflows live in the ephemeral
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`/opt/ComfyUI/user` layer and do NOT survive an image rebuild — hence the
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host-side `workflows/` dir and the repo copy.
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## Recommended additions
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Quantized preferred, sized for the 8060S iGPU (GTT-backed; the RTX 3090 is
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frank-zealot's). All repos verified 2026-10-05. None are on disk yet.
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| # | What | Repo | Grab | Size | Why |
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|---|---|---|---|---|---|
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| 1 | **Lightning 8-step LoRA** (T2I speed) | `lightx2v/Qwen-Image-Lightning` | `qwen_image_lightning_8steps_*.safetensors` (LoRA) | ~1–2 GB | 20 steps → 8 with a `LoraLoader` node; 2–3× faster renders on the iGPU, negligible quality loss |
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| 2 | **Qwen-Image-Edit-2511 GGUF** (image editing) | `unsloth/Qwen-Image-Edit-2511-GGUF` | Q4_K_M (~13.2 GB) or Q4_0 (~11.9 GB) | ~12–13 GB | Unlocks img2img "edit this photo" workflows — a capability class the fleet has zero of; Q4 keeps it iGPU-friendly |
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| 3 | **DiffSynth ControlNets** (structure control) | `Comfy-Org/Qwen-Image-DiffSynth-ControlNets` | `split_files/model_patches/` canny + depth | ~2–3 GB each | Pose/edge/depth-guided layouts — pairs with the legible-text workflow for exact poster composition. The `QwenImageDiffsynthControlnet` node is already in the running ComfyUI |
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| 4 | **Wan 2.2 TI2V-5B GGUF** (first video model) | `QuantStack/Wan2.2-TI2V-5B-GGUF` | Q4/Q5 GGUF (~6–8 GB) | ~6–8 GB | T2V+I2V in one dense 5B model; the gentlest on-ramp into video generation, runs in ComfyUI core (`wan` CLIP type is already in this build's loader enum) |
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Placement: #1 → `models/lora/` (create it), #2 → `models/diffusion_models/`,
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#3 → `models/controlnet/` (create it), #4 → `models/diffusion_models/`.
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Fetch with `scripts/download-frank-*.sh` discipline (`-f` + byte-count +
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sha256 checks) or a plain `hf download` with the token in the environment —
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never on the command line.
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Skip list: the original `city96/Qwen-Image-gguf` conversions (superseded by
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the 2.1 files already on disk), and any BF16 of #2/#4 (the iGPU does not need
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them at GTT capacity, and they double the disk bill).
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## See Also
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- [[ComfyUI]] — the service itself (image, unit, GPU access)
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- [[ComfyUI ROCm and Vulkan]] — the live-verified GPU path
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- [[Dankclaw Stack]] — the host
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