Frank
8f129180d8
Staged 59 GiB of retired LLM payloads on Dankclaw to ~dank/.AGENTTRASH/20261002-retired-llm-payloads/ (vLLM MiMo BF16, Qwen3.5-9B MTP source, both DFlash dirs, Gemma4-12B-QAT, SGLang MiMo INT8) and corrected every doc claim about what is on disk: gufo's rollback pair (Q4_K_XL weights + the Q8_K_XL DFlash2 drafter) and frank-small's Q6_K stay in place, so the rollback paths in the tags' env files still resolve. The vLLM-era frank-large fetch trio moves to old/ with its runtime; runbook links updated.
178 lines
8.8 KiB
Markdown
178 lines
8.8 KiB
Markdown
---
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type: reference
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title: "frank-small on Dankclaw — SGLang, MiMo-V2.6-Distill-Qwen-9B INT8 W8A16 (RETIRED)"
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description: "The RETIRED frank-small runbook (2026-10-01, hours) — SGLang in a self-contained python3.12 venv serving leteschlead MiMo-V2.6-Distill-Qwen-9B-INT8-W8A16-AutoRound (qwen3_5 hybrid, 9B dense, in-checkpoint MTP + vision) on the RTX 3090: identity, payload, KV arithmetic, the NEXTN spec-decode ghost, the CUDA 13 nvcc toolchain the JIT needs, and the measured numbers kept for the record. Replaced by [[frank-small-llama-mimo-q6k]] the same night."
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tags:
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- llm
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- frank-small
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- dankclaw
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- sglang
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- rtx3090
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- qwen
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- mtp
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- vision
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- int8
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timestamp: 2026-10-01
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---
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# frank-small — SGLang MiMo-V2.6-Distill-Qwen-9B INT8 W8A16 (NEXTN MTP)
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> **RETIRED 2026-10-01, hours after cutover.** Replaced by
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> [[frank-small-llama-mimo-q6k]] — llama.cpp CUDA on the MiMo Q6_K GGUF,
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> chosen for the asymmetric KV (f16 K + q8_0 V) SGLang cannot express.
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> The venv (`/home/dank/GitPackages/sglang-cu128/`) stays in place; the INT8
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> payload was staged to
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> `/home/dank/.AGENTTRASH/20261002-retired-llm-payloads/` on 2026-10-02 when
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> the llama.cpp endpoint was two runtimes deep — recoverable until the trash
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> is purged.
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## Identity
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- **Endpoint:** `frank-small` at `192.168.0.143:7771` (Dankclaw).
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- **Runtime:** SGLang (latest) in a self-contained python3.12 venv at
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`/home/dank/GitPackages/sglang-cu128/` (torch 2.13.0+cu130,
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transformers 5.12.1, flashinfer 0.6.18, sgl-kernel). No container — a root
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systemd unit `scripts/frank-small.service` (`User=dank`,
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`LimitMEMLOCK=infinity`) launched by `scripts/serve-frank-small.sh` with
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tunables from `scripts/frank-small.env`.
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- **Model:** `letechlead/MiMo-V2.6-Distill-Qwen-9B-INT8-W8A16-AutoRound`
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(9B dense, 12.0 GiB, INT8 W8A16 AutoRound group-128 symmetric).
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## Shape
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- **Architecture `qwen3_5` hybrid:** 32 layers = 8 full-attention
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(4 KV heads x 256 head_dim, `partial_rotary_factor: 0.25`) + 24 Gated
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DeltaNet. `max_position_embeddings: 262144`, and a `qwen3_5_vision`
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tower (27 layers) in the safetensors — no separate mmproj file.
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- **Context:** two 262,144-token slots at the model's native window
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(`--context-length 262144`, `--max-running-requests 2`) against a
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**pinned** 606,208-token pool (`--max-total-tokens`) — 2026-10-01
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reslice from four 151,552-token slots: 2 x 262,144 = 524,288 leaves
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~82k tokens of pool slack, and a compaction request (frank-primary's
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trigger 183,501 + a 32,768-token summary budget = 216,269) now fits
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one request. A single request may grow to the whole pool — a
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170,019-token prompt was verified at the 4-slot shape — the grid is
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the two-way concurrency contract.
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- **KV:** `fp8_e4m3` — 16 KiB/token (8 attn layers x 2 x 4 heads x 256
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dim x 1 B), pool 9.31 GiB.
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- **The memory shape (the 4.5 GiB the naive math misses):** the DeltaNet
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ssm state pool is a first-class consumer. The engine autofills the
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mamba slot count to spend a fixed ~5.1 GB budget *regardless of dtype*
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(fp32 at 110 slots, bf16 at 217 — same 5.1 GB), so both dials are
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pinned: `--mamba-ssm-dtype bfloat16 --max-mamba-cache-size 32` = 795
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MiB. With that, weights 11.35 GiB + mamba 0.78 GiB + pool 9.31 GiB
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leave ~0.8 GB — enough for eager-prefill workspaces, NOT enough for
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CUDA-graph capture (autofit's 687,388-token pool leaves 0.53 GB and
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dies in capture, or later in the first long request once Triton's
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deferred kernel loads eat the remainder). Hence
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`--disable-prefill-cuda-graph`; decode graphs are untouched.
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- **Quantization:** `--quantization auto-round` — the checkpoint's
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`quantization_config.json` declares `quant_method: "auto-round"` and
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SGLang loads it natively (vision tower, `embed_tokens` and
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`linear_attn.in_proj` stay fp16).
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## Spec method
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**None — and this is a checkpoint fact, not a tuning choice.** The
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`text_config` declares `mtp_num_hidden_layers: 1`, but the shipped
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safetensors carry **zero `mtp.*` tensors**: verified 2026-10-01 against
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`model.safetensors.index.json` for both this INT8 conversion and the base
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`XiaomiMiMo/MiMo-V2.6-Distill-Qwen-9B` (32 layers, indices 0–31, no
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`mtp.`/`nextn.`/`layers.32` keys in either). With NEXTN enabled, SGLang
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boots a 4.24 GiB draft model (`Qwen3_5ForCausalLMMTP`) from nothing and
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decodes at `accept len: 1.00, accept rate: 0.00` — every proposal rejected,
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paying the 4-token verify tax for no token. The serve script passes no
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`--speculative-*` flag, and the seam gates that.
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## CUDA 13 toolchain (the sharp edge)
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The venv's torch is cu130, so every JIT kernel (sgl-kernel marlin repack,
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flashinfer) compiles with a **CUDA 13.0 nvcc extracted from debs into the
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venv** at `cuda-nvcc/usr/local/cuda-13.0/` — the system nvcc is 12.4 (no
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`--compress-mode`) and its headers clash with the 13.0 device passes.
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Components (all from the ubuntu2404 CUDA repo, `dpkg -x`'d, not installed):
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| Package | Supplies |
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|---|---|
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| `cuda-nvcc-13-0` (13.0.88) | `bin/nvcc`, `ptxas`, `cudafe++`, … |
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| `libnvvm-13-0` (13.0.48) | `nvvm/bin/cicc` (the device compiler) |
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| `cuda-cudart-dev-13-0` (13.0.88) | `include/cuda_runtime.h`, `lib64/stubs` |
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| `cuda-crt-13-0` (13.0.88) | `include/crt/host_runtime.h` (2-arg `__cudaLaunch`) |
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| `libnvptxcompiler-13-0` (13.0.88) | static lib + `nvPTXCompiler.h` |
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| `cuda-cccl-13-0` (13.0.50) | `cccl/cuda/...` headers (libcudacxx) |
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Three local modifications the tree carries:
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1. **`bin/nvcc` is a shim** over `bin/nvcc.real` adding
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`-allow-unsupported-compiler` (host GCC 16 > nvcc's max 13).
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2. **`targets/x86_64-linux/include` and `lib` are symlinks** to
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`../../../include` / `../../../lib64` (the deb ships them as real
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near-empty dirs; the stub pass must see the 13.0 headers, not
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`/usr/include` 12.4).
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3. **`include/cuda` → `cccl/cuda`** symlink (CCCL 3.x layout; flashinfer
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includes `<cuda/functional>`), and **`crt/math_functions.h`** patched with
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`noexcept` on `rsqrt`/`rsqrtf` (glibc 2.42 declares them `noexcept(true)`;
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the unpatched 13.0 declarations are incompatible in the C++ host stub).
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JIT caches: `~/.cache/sglang/jit/sm86/` and
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`~/.cache/sglang/.cache/flashinfer/0.6.18/86/` — clear both when a toolchain
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change lands.
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## Payload
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Eight safetensors shards (12,891,718,440 B total) + tokenizer and config
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files under `/home/dank/models/MiMo-V2.6-Distill-Qwen-9B-INT8-W8A16-AutoRound/`,
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all LFS sha256-verified by `old/download-frank-small-sglang-int8.sh`
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(`--verify-only` re-checks) — the script moved to `old/` when the endpoint
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cut over to llama.cpp + GGUF on 2026-10-01 night, and
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`scripts/download-frank-small.sh` now fetches the GGUF quant instead. The
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serve script refuses to start with a missing shard.
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## Client contract
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- **Alias:** `frank-small` (the `id` at `/v1/models`).
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- **Reasoning:** extracted to **`reasoning_content`** (live-verified
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2026-10-01 — this SGLang build's qwen3 parser uses the same field name
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as llama.cpp; models.yml sets `reasoningContentField:
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"reasoning_content"`). `--reasoning-parser qwen3`.
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- **Tools:** `--tool-call-parser qwen3_coder`.
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- **Vision:** supported (in-checkpoint tower).
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- **Sampling:** SGLang has NO server-wide `--temperature`/`--top-p`/
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`--top-k` — sampling rides on the request; the harness sends the Qwen
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recipe (temp 0.7, top_p 0.8) via models.yml `compat.extraBody`.
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- **Reasoning effort:** the full OpenAI set is accepted (the chat template
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has no effort gate).
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## Measured
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- Boot ~60 s with warm JIT caches (several minutes cold — the first boot
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compiles the sgl-kernel + flashinfer kernels; the CUDA 13 toolchain
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above is what makes that compile succeed).
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- Decode **83.9 tok/s** (no spec decode — nothing to accept).
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- Prefill ~2,050–3,370 t/s eager (4-slot shape: a 170,019-token prompt in
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50.5 s, ~3,370 t/s; 2-slot shape: a 200,000-token prompt in 97.3 s wall
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incl. 8 decode tokens, ~2,056 t/s).
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- 4-slot shape: 4 concurrent 54,027-token requests all answered in ~17 s
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(216k tokens of live KV at once). 2-slot shape: two concurrent
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50,000-token requests both answered (28.8 s wall).
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- **Compaction fit (the reslice's purpose):** a 200,000-token prompt —
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well past frank-primary's 183,501-token compaction trigger (70% of its
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262,144 window) — prefills and completes in ONE request.
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- Vision: a 64x64 red square answers "Red" with `image_tokens: 64`.
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## Rollback
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[[frank-small-llama-mimo-q5km]] is the live shape two steps forward; the
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practical rollback today is [[frank-small-llama-mimo-q6k]] (payload at
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`/home/dank/models/MiMo-Q6K/`). This era's own rollback, the llama.cpp
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Gemma4-12B QAT payload, was staged to
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`/home/dank/.AGENTTRASH/20261002-retired-llm-payloads/Gemma4-12B-QAT/` on
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2026-10-02; its unit/env/serve trio remains in `old/`.
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# Citations
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- Model: https://huggingface.co/letechlead/MiMo-V2.6-Distill-Qwen-9B-INT8-W8A16-AutoRound
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- SGLang: https://github.com/sgl-project/sglang
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- Serve script: `scripts/serve-frank-small.sh`; tunables: `scripts/frank-small.env`
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