feat(llm): rename inference services dropping 'default' from names
frank-default-large -> frank-large (Dankclaw :7770), frank-default-small -> frank-small (Dankserver :7770), frank-default-sightsound -> frank-npu (Dankclaw :7771). Units, env files, serve scripts, deploy-plan mappings, deploy-remote dispatch (stop/disable old units + relink + enable new), and the test seams move together. Retired frank-default-npu.* artifacts moved to scripts/.AGENTTRASH/ (tracked-in-history; ignored on disk). Served aliases become frank-large / frank-small via --alias; the NPU endpoint serves the whole FLM registry, so its rename changes no served tags.
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---
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type: configuration
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title: frank-default-sightsound Runbook
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description: FastFlowLM (FLM) NPU sight+sound endpoint on Dankclaw — XDNA2 NPU serving Qwen3.8 Distilled Heretic vision+text pack on port 7771, including the IOMMU/SVA root cause that took it down at first deploy.
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tags:
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- flm
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- fastflowlm
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- xdna2
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- npu
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- dankclaw
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- frank-default-sightsound
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timestamp: 2026-09-01
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---
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# frank-default-sightsound — FLM NPU sight+sound Runbook
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`frank-default-sightsound` is the third inference endpoint on Dankclaw: a
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FastFlowLM (FLM) v1.0.1 server (`/usr/bin/flm`, dpkg package `fastflowlm`)
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running on the **XDNA2 NPU** (50 TOPS). It serves *sight* (vision) —
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which the iGPU llama.cpp fleet ([[kingjones-strix-rocmfp4]],
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`frank-default-large`) does not do. The model-selection tradeoff: the only
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NPU2 pack family on this box with BOTH a vision and an audio tower is the
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Gemma4 E4B IT pack; the uncensored candidate (`qwythos:9b`, 8.94 GB, 262k ctx)
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is text-only and fails the hard modality requirement, so this endpoint trades
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"uncensored" for "sight + sound".
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## Deployment shape
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| Field | Value |
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|-------|-------|
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| Runtime | FLM v1.0.1 (`/usr/bin/flm`, dpkg `fastflowlm`) on the XDNA2 NPU |
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| Service | `frank-default-sightsound.service` (systemd system unit, `User=dank`, `Restart=on-failure`, `RestartSec=10`, `LimitMEMLOCK=infinity`) |
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| Files | `scripts/frank-default-sightsound.env`, `scripts/serve-frank-default-sightsound.sh`, `scripts/frank-default-sightsound.service` |
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| Deploy | `scripts/deploy.sh dankclaw --service frank-default-sightsound` (relink + daemon-reload + enable + restart; health gate polls `/v1/version`, 300 s cap — FLM has **no `/health` route**) |
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| Port | `7771` on `0.0.0.0` (52625/52626 left free for ad-hoc `flm serve` experiments) |
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| Power mode | `FLM_PMODE=turbo` — no other tenant uses the NPU on this host (the large model runs on the iGPU), so the top power mode costs no neighbour anything; drop to `performance` if iGPU power-budget contention ever shows |
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| Context | `FLM_CTX_LEN=131072 (128K; verified max on this box; native context length.) |
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| ASR | `FLM_ASR=0` — the E4B pack answers images natively through its vision tower in `/v1/chat/completions`; setting `FLM_ASR=1` additionally loads Whisper-V3-Turbo-NPU2 (+0.62 GB) and exposes `/v1/audio/transcriptions` |
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The serve script exports `FLM_CONFIG_PATH=/home/dank/.config/flm/model_list.json`
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and `FLM_XCLBIN_PATH=/home/dank/.config/flm/xclbins`; kernels are symlinked
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from `/opt/fastflowlm/share/flm/xclbins/` into the per-pack directories. A tag
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swap is therefore an env-file edit, not a script edit.
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## Model tags for switching
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FLM routes per-request by the exact registry tag in the `model` field. To swap
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the service model, change `FLM_MODEL` in the env file and restart. To let
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clients choose, send requests with the desired `model` field.
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| Tag | Model | Modality | Size | Family |
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|-----|-------|----------|------|--------|
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| `qwen3.8-distilled-heretic:9b` | Qwen3.8 Distilled Heretic | vision + reasoning | 7.6 GB | qwen3.5 |
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| `gemma4-it:e4b` | Gemma4 E4B IT | vision + audio | 9.1 GB | gemma4e |
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| `qwythos:9b` | Qwythos 9B Claude Mythos | vision + reasoning | 8.9 GB | qwen3.5 |
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| `gpt-oss:20b` | GPT-OSS 20B | text only | 13.8 GB | gpt-oss |
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**To swap the active model** (changes what the service loads at start):
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```
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sed -i 's/^FLM_MODEL=.*/FLM_MODEL=<tag>/' scripts/frank-default-sightsound.env
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./scripts/deploy.sh dankclaw --service frank-default-sightsound
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```
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**To switch per-request** (service stays loaded, client sends the tag):
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```
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curl http://192.168.0.143:7771/v1/chat/completions \
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-H "Content-Type: application/json" \
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-d '{"model":"gemma4-it:e4b","messages":[...],"max_tokens":64}'
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```
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Known tags are in the user registry at
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`/home/dank/.config/flm/model_list.json`; unknown tags answer HTTP 200 with
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`{"error":"Failed to load <tag> model!"}` (no choices).
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## Serving model and API contract
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- The endpoint serves the **whole local registry** (36 tags at first deploy) on
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one port; `/v1/models` lists them all. Chat completions route per request by
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the exact FLM registry tag in the `model` field — never a service alias.
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- **Unknown model tags do NOT 404** (live-probed): `/v1/chat/completions`
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answers HTTP 200 with a flat error body
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`{"error":"Failed to load <tag> model!"}` and no `choices`;
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`/v1/completions` answers an OpenAI-shaped nested error
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(`type: server_error`, `code: 500`), also under HTTP 200. A valid tag
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routes that request to that model (response echoes the requested tag); no
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server restart is needed to switch between registry tags. Status-code-only
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clients silently get an empty response — check for the `error` key.
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- Multimodal content parts accepted by `/v1/chat/completions`:
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`{"type":"image_url","image_url":{"url":"data:image/png;base64,..."}}` and
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`{"type":"input_audio","input_audio":{"data":"<base64 WAV, no data: prefix>","format":"wav"}}`.
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- Chat template roles: only `system`/`user`/`assistant`; any other role fails
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the request with `Unexpected message role.`.
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- The NPU is a single-lane device: generations serialize in FIFO order. This is
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a background/triage endpoint, not an interactive multi-user chat.
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## Live-verified behavior (2026-08-30, first deploy)
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- Vision tower: a generated red 8×8 PNG posted as an `image_url` data-URI was
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answered correctly ("The image is a solid red color."); the request consumed
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279 prompt tokens — the vision tower consumed the pixels (a text-only model
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given zero image bytes cannot answer "what color").
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- Audio tower: a 440 Hz decaying sine WAV posted as `input_audio` consumed
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37 prompt tokens vs 15 for the identical text-only control → ~22 audio-tower
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tokens; the model answered truthfully that it heard no speech (it is a tone,
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not speech — ASR stays off).
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## The IOMMU/SVA root cause (first deploy crashed, fixed same day)
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First deploy crash-looped every 10 s (`RestartSec=10`) with
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`Error: Open /dev/accel/accel0 failed (err=-19): No such device`. Root-cause
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chain, all live-verified on the host:
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1. `amdxdna_drm_open` was failing **SVA bind with ret -19** for every client —
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the XDNA2 driver cannot hand out the accel device without PASID/SVA.
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2. SVA requires the AMD IOMMU to be enabled; the kernel cmdline carried
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`iommu=off` (a perf/DMA tuning experiment from 2026-08-20, applied at the
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2026-08-26 reboot). With IOMMU off there are no IOMMU groups and no PASID
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state; `PASIDCtl: Enable-` was observed disabled on `0000:c5:00.1`.
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3. Fix: replace `iommu=off` with **`iommu=pt`** in `GRUB_CMDLINE_LINUX_DEFAULT`
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on `/etc/default/grub`, `update-grub`, reboot. Passthrough mode keeps the
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iGPU default domain identity-mapped (zero DMA-translation overhead for
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`frank-default-large`) while enabling IOMMU hardware + PASID, which is what
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the NPU driver's SVA bind requires — PASID domains are paged regardless of
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the default-domain type.
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4. Post-boot verification: `/sys/kernel/iommu_groups/` populated (30 groups),
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zero `SVA bind device failed` journal entries since boot, accel0 recreated at
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boot, service active with `NRestarts=0`, and the image/audio probes above
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served live.
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The same root cause explains the older `amdgpu 0000:c4:00.0: no vmid pasid
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mapping supported` kernel log line — a consequence of IOMMU-off, not a GPU
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fault. Do not set `iommu=off` on this host again; it silently kills the NPU.
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## Client wiring
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The pi client model config (`/home/dank/.pi/agent/models.json` on Dankware)
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registers this endpoint under the Dankclaw provider with the **exact** FLM
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registry tag as the model `id` (unknown tags answer a 200-wrapped error, not
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a silent 1B fallback), `baseUrl` `http://192.168.0.143:7771/v1`, and a per-request context
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window equal to the serving ctx-len. Health checks for this service must use
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`GET /v1/version` (there is no `/health` route).
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