Recipe
qwen3-6-27b-dflash-q4-k-m-rtx-5090-32gb-llama-cpp-tp1
qwen3-6-27b-dflash-q4-k-m-rtx-5090-32gb-llama-cpp-tp1Observed LocalMaxxing leaderboard run. Evidence for compatibility, not an executable launch contract.
Record
- Status
- candidate
- Source
- localmaxxing
- Engine
- llama.cpp
- Engine version
- lucebox-hub b6ffab4a9 (sm_120 rebuild)
- Accelerators
- 1
- Tensor parallel
- 1
- Context tokens
- 1,024
- chat
- unknown
- reasoning
- unknown
- tools
- unknown
- vision
- unknown
Hugging Face model card
Identity
https://huggingface.co/z-lab/Qwen3.6-27B-DFlash- Repository
- z-lab/Qwen3.6-27B-DFlash
- Status
- known
- Link type
- Exact Hub repository
Public Hugging Face repository confirmed by the Hub API.
Candidate: useful compatibility or speed evidence. The registry does not offer Run until promotion requirements are met.
Observed configuration
llama.cpp
Evidence only · candidate · reference
Candidate evidence — not a Run contract
Observed source tokens
Mechanical split of the source command. Unverified against the engine CLI. The registry does not offer Run for this recipe.
build/test_dflashQwen3.6-27B-Q4_K_M.ggufz-lab/Qwen3.6-27B-DFlash--fast-rollback--ddtree--ddtree-budget=22--max-ctx=1024(rebuildforsm_120:cmake-DCMAKE_CUDA_ARCHITECTURES=120-DGGML_CUDA_GRAPHS=ON-DCMAKE_CUDA_COMPILER=/usr/local/cuda-12.9/bin/nvcc-DCMAKE_CUDA_HOST_COMPILER=/usr/bin/gcc-12)
| Flag | Value |
|---|---|
--ddtree-budget | 22 |
--max-ctx | 1024 |
-DCMAKE_CUDA_ARCHITECTURES | 120 |
-DGGML_CUDA_GRAPHS | ON |
-DCMAKE_CUDA_COMPILER | /usr/local/cuda-12.9/bin/nvcc |
-DCMAKE_CUDA_HOST_COMPILER | /usr/bin/gcc-12) |
Measured speed
| Concurrency | Context | Prefill | Decode | TTFT ms | Status | Sweep |
|---|---|---|---|---|---|---|
| 1 | 1,024 | — | 215.4 | 470 | observed | qwen3-6-27b-dflash-q4-k-m-rtx-5090-32gb-llama-cpp-tp1-sweep |
Remaining fields
Identity, launch, related records, and measured speed are shown above. This is the rest of the normalized record.
- hardware count
- 1
- hardware id
- rtx-5090-32gb
- id
- qwen3-6-27b-dflash-q4-k-m-rtx-5090-32gb-llama-cpp-tp1
- model instance id
- z-lab-qwen3-6-27b-dflash--q4-k-m
- recipe source
- localmaxxing
- schema version
- local-ai-registry/v1
- speed sweep ids
- qwen3-6-27b-dflash-q4-k-m-rtx-5090-32gb-llama-cpp-tp1-sweep
- status
- candidate
capabilities
engine
- name
- llama.cpp
- version
- lucebox-hub b6ffab4a9 (sm_120 rebuild)
serving
- max context tokens
- 1,024
- tensor parallel
- 1
Provenance & metadata (3)
facts
- capabilities.chat · provenance · captured at
- 2026-08-30T09:10:02Z
capabilities.chat · reason capability-not-verified
capabilities.chat · state unknown
- capabilities.reasoning · provenance · captured at
- 2026-08-30T09:10:02Z
capabilities.reasoning · reason capability-not-verified
capabilities.reasoning · state unknown
- capabilities.tools · provenance · captured at
- 2026-08-30T09:10:02Z
capabilities.tools · reason capability-not-verified
capabilities.tools · state unknown
- capabilities.vision · provenance · captured at
- 2026-08-30T09:10:02Z
capabilities.vision · reason capability-not-verified
capabilities.vision · state unknown
- engine.graph mode · provenance · captured at
- 2026-08-30T09:10:02Z
engine.graph mode · reason runtime-detail-not-published
engine.graph mode · state unknown
- serving.kv cache tokens · provenance · captured at
- 2026-08-30T09:10:02Z
serving.kv cache tokens · reason kv-cache-capacity-not-published
serving.kv cache tokens · state unknown
- serving.max concurrency · provenance · captured at
- 2026-08-31T23:03:15Z
serving.max concurrency · reason server-capacity-not-evidenced
serving.max concurrency · state unknown
metadata
- localmaxxing · backend
- cuda
- localmaxxing · batch size
- 1
- localmaxxing · hardware label
- RTX 5090
- localmaxxing · notes
- DFlash speculative decoding via Lucebox-Hub test_dflash binary on RTX 5090 ROG Astral OC (Blackwell GB202). Same bench methodology as prior #19 submission (3090 Ti, 140.28 t/s mean) — scripts/bench_he.py --n-gen 512 --ddtree-budget 22 over 10 HumanEval prompts, single-stream batch=1. 5090 result: mean 215.43 t/s (range 116.5-273.3), peak sum_product 250.4 / filter_by_substring 273.3. Acceptance length 8.83, accept rate 55.2%. +53.6% over prior 3090 Ti same-binary-same-recipe submission. Required rebuild for sm_120 — CUDA 12.9 toolkit, gcc-12 host compiler (gcc-13 + _Float128 glibc clash on Ubuntu 24.04), CMAKE_CUDA_ARCHITECTURES=120, GGML_CUDA_GRAPHS=ON. Critical CMake flags from #19 still apply. Display IS attached to this 5090 — Xorg pstate flicker likely costs ~10% decode (per the 2026-04-27 monitor-on-Ti finding). Production vLLM endpoint stopped during bench.
- localmaxxing · observed command
- build/test_dflash Qwen3.6-27B-Q4_K_M.gguf z-lab/Qwen3.6-27B-DFlash --fast-rollback --ddtree --ddtree-budget=22 --max-ctx=1024 (rebuild for sm_120: cmake -DCMAKE_CUDA_ARCHITECTURES=120 -DGGML_CUDA_GRAPHS=ON -DCMAKE_CUDA_COMPILER=/usr/local/cuda-12.9/bin/nvcc -DCMAKE_CUDA_HOST_COMPILER=/usr/bin/gcc-12)
- localmaxxing · run id
- cmokq33sw0004ks0413sul32a
- localmaxxing · tokenized · arguments
- build/test_dflash, Qwen3.6-27B-Q4_K_M.gguf, z-lab/Qwen3.6-27B-DFlash, --fast-rollback, --ddtree, --ddtree-budget=22, --max-ctx=1024, (rebuild, for, sm_120:, cmake, -DCMAKE_CUDA_ARCHITECTURES=120, -DGGML_CUDA_GRAPHS=ON, -DCMAKE_CUDA_COMPILER=/usr/local/cuda-12.9/bin/nvcc, -DCMAKE_CUDA_HOST_COMPILER=/usr/bin/gcc-12)
- localmaxxing · tokenized · fidelity
- faithful
provenance
- captured at
- 2026-08-30T09:10:02Z
sources
| captured at | kind | url |
|---|---|---|
| 2026-08-30T09:10:02Z | normalized-recipe | www.localmaxxing.com/en/runs/cmokq33sw0004ks0413sul32a ↗ |