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19 changes: 19 additions & 0 deletions .agents/issues/_owed/ISSUE-LOCAL-01M221WAVSK2STJ49Y3WTDSDS3.md
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ID: ISSUE-LOCAL-01M221WAVSK2STJ49Y3WTDSDS3
Title: Refresh the Qwen3.8 public documentation
Row: -
State: OPEN
Kind: docs
GitHub: -
Mirror: PENDING
Availability: FULL
Created: 2026-09-09
Updated: 2026-09-09
Closed: -

## Problem

README News omits the September Qwen3.8 EXL3 serving comparison. The benchmark index hides its incomplete repetitions, and the Qwen3.8 model guide contradicts its recorded FP8 token gate.

## Resolution

-
58 changes: 58 additions & 0 deletions .agents/specs/qwen38-public-doc-refresh.md
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# Qwen3.8 public documentation refresh

## Scope

Correct public documentation against the code and committed evidence at base
`6db4bef90`. This is an editorial audit, not a feature lifecycle transition.
No model, kernel, test, or benchmark implementation changes are in scope.

## Inventory and design

| Surface | Gap | Required correction | Authority |
|---|---|---|---|
| README News | September EXL3 comparison is absent | Add a compact entry linking the measurement, with its incomplete and ungated limits | `docs/benchmarks/qwen38-27b-exl3-variadic-gb10.md` |
| Benchmark index | Mixed-length comparison reads only Measured | Expose incomplete comparator repetitions in its disposition | Same benchmark detail and committed run records |
| Qwen3.8 model guide | CUDA component paragraph denies a token gate documented earlier | Distinguish component validation from the later model comparison; simplify affected prose | `docs/models/qwen3-8-27b.md`, matching model and FP8 CUDA implementation, recorded gate evidence |

## Verification

Inspect the actual code for every changed behavior claim. Retain the recorded
hardware, oracle revision, workload, and limitations. Do not extrapolate a
sampled EXL3 serving comparison into correctness or speed parity.

Run the existing README, benchmark-index, site, and agent-record checks, plus
staged preflight. No GPU, model download, external compute, or new benchmark
is needed or authorized. Runtime performance and correctness are unchanged.
A fresh agent implements these edits from this committed spec. A fresh reviewer
checks the immutable result against the code and evidence. The operator reruns
the focused gates before pushing to the fork and opening an upstream PR.

## Risks and stop conditions

Do not edit unrelated benchmark history or feature states. Do not replace a
historical measurement with an unmeasured current result. Report any unavailable
gate dependency explicitly. No merge into upstream is authorized.

## Owed

- ISSUE-LOCAL-01M221WAVSK2STJ49Y3WTDSDS3: correct the three public surfaces above.

## Review handoff

The editorial changes are implemented on the task branch. The canonical issue
stays open until upstream integration. No feature state or measured number
changes. Resume by reviewing the three public-file changes against these anchors:

- `.agents/specs/gate-qwen38-27b-fp8-block.md:539`: model token gate.
- `.agents/specs/vt-matmul-fp8-block-cuda.md:638`: CUDA component evidence.
- `tests/vt/test_ops_matmul_fp8_block_cuda.cpp:9`: component test scope.
- `src/vllm/model_executor/models/qwen3_5.cpp:2652`: block-FP8 dispatch.
- `docs/benchmarks/qwen38-27b-exl3-variadic-gb10.md:13`: comparison limits.

CPU-only validation uses the existing `check-readme-structure.py`,
`check-benchmark-index.py`, `check-site.py`, and `check-agent-record.py` scripts.
All four pass. The existing README and benchmark-index mutation suites pass.
Full preflight was attempted, but its initial run lacked Python validation
packages and native tool dependencies. Release packaging subprocess tests also
failed with the temporary Python runtime's shared-library lookup. Those results
are not a full-preflight pass. The focused editorial checks require no GPU.
3 changes: 3 additions & 0 deletions README.md
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Expand Up @@ -37,6 +37,9 @@

## News

- **2026-09** **Qwen3.8-27B EXL3 gets a mixed-length serving comparison on GB10.**
The [measurement](docs/benchmarks/qwen38-27b-exl3-variadic-gb10.md) covers concurrency 1, 4, and 8.
Comparator repetitions remain incomplete, configurations differ, and no correctness gate covers the run.
- **2026-09** **C ABI 26 exposes more engine controls.** Applications can select the KV cache
dtype, read speculative acceptance counters, and disable the model-level sliding window.
See the [C API reference](docs/reference/c-api.md#recent-abi-additions) for defaults and limits.
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2 changes: 1 addition & 1 deletion docs/BENCHMARKS.md
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Expand Up @@ -15,7 +15,7 @@ measurement evidence remains in [the benchmark record](../.agents/benchmark-reco
| `speculative-decoding` | Speculative decoding measurements | Mixed | [Details](benchmarks/speculative-decoding.md) |
| `qwen38-27b-exl3-gb10` | Qwen3.8-27B EXL3 3.5bpw with its DFlash2 draft, on GB10 | Measured | [Details](benchmarks/qwen38-27b-exl3-gb10.md) |
| `qwen38-27b-q4km-gfx1151` | Qwen3.8-27B Q4_K_M on Strix Halo: llama.cpp, vLLM and vllm.cpp, under a failing token gate | Mixed | [Details](benchmarks/qwen38-27b-q4km-gfx1151.md) |
| `qwen38-27b-exl3-variadic-gb10` | Qwen3.8-27B EXL3 3.5bpw under a mixed-length serving load, swept over concurrency, on GB10 | Measured | [Details](benchmarks/qwen38-27b-exl3-variadic-gb10.md) |
| `qwen38-27b-exl3-variadic-gb10` | Qwen3.8-27B EXL3 3.5bpw under a mixed-length serving load, swept over concurrency, on GB10 | Measured, comparator repetitions incomplete | [Details](benchmarks/qwen38-27b-exl3-variadic-gb10.md) |
| `tt-capture-default-decode` | Tenstorrent decode rate, capture default vs opt-out, on the P150 | Measured | [Details](benchmarks/tt-capture-default-decode.md) |
| `how-we-measure` | Benchmark method and acceptance rules | Method | [Details](benchmarks/how-we-measure.md) |
| `variadic-load-methodology` | How the mixed-length, swept-concurrency serving benchmark works | Method | [Details](benchmarks/variadic-load-methodology.md) |
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7 changes: 4 additions & 3 deletions docs/models/qwen3-8-27b.md
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Expand Up @@ -202,9 +202,10 @@ supported width to 576. The run reported 5 cases and 136 assertions with no
failures and no portable-fallback line. Unsupported shapes returned their named
refusal.

This is not a model gate and not a speed result. No token-exact comparison
against vLLM has run through this arm, and the device run recorded neither
controlled clocks nor contention. It proves only the shapes that were run.
This component run validates the seven tested shapes against the CPU reference.
It recorded neither controlled clocks nor contention, so it establishes no speed result.
The separate [model token gate](#the-token-gate-against-vllm) ran on 23 August 2026,
with six token-identical prompts and one adjudicated near-tie.
[#1437](https://github.com/mudler/vllm.cpp/issues/1437) records both runs,
milestone M5 of [#1189](https://github.com/mudler/vllm.cpp/issues/1189) owns the
kernel, and [#1166](https://github.com/mudler/vllm.cpp/issues/1166) is the
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