Recipe
qwen3-5-27b-nvfp4-dgx-spark-gb10-128gb-vllm-tp1
qwen3-5-27b-nvfp4-dgx-spark-gb10-128gb-vllm-tp1Observed LocalMaxxing leaderboard run. Evidence for compatibility, not an executable launch contract.
Record
- Status
- candidate
- Source
- localmaxxing
- Engine
- vllm
- Engine version
- 0.19.2rc1.dev213+g9558f4390.d20260426
- Accelerators
- 1
- Tensor parallel
- 1
- Context tokens
- 4,096
- Max concurrency
- 1
- chat
- unknown
- reasoning
- unknown
- tools
- unknown
- vision
- unknown
Hugging Face model card
Identity
https://huggingface.co/Qwen/Qwen3.5-27B- Repository
- Qwen/Qwen3.5-27B
- 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
vllm
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.
vllmserve/models/AxionML-Qwen3.5-27B-NVFP4--host127.0.0.1--port8000--trust-remote-code--max-model-len4096--served-model-nameqwen35-27b-axionml-nvfp4--generation-configvllm--load-formatfastsafetensors--attention-backendFLASH_ATTN--gpu-memory-utilization0.90--max-num-batched-tokens8192--max-num-seqs1--enable-chunked-prefill
| Flag | Value |
|---|---|
--host | 127.0.0.1 |
--port | 8000 |
--max-model-len | 4096 |
--served-model-name | qwen35-27b-axionml-nvfp4 |
--generation-config | vllm |
--load-format | fastsafetensors |
--attention-backend | FLASH_ATTN |
--gpu-memory-utilization | 0.90 |
--max-num-batched-tokens | 8192 |
--max-num-seqs | 1 |
Environment
| Variable | Value |
|---|---|
FLASHQLA_HKV_O_BK | 128 |
FLASHQLA_HKV_O_BV | 128 |
VLLM_NVFP4_GEMM_BACKEND | cutlass |
Measured speed
| Concurrency | Context | Prefill | Decode | TTFT ms | Status | Sweep |
|---|---|---|---|---|---|---|
| 1 | 4,096 | 3,132.1 | 11.5 | 658.5 | observed | qwen3-5-27b-nvfp4-dgx-spark-gb10-128gb-vllm-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
- dgx-spark-gb10-128gb
- id
- qwen3-5-27b-nvfp4-dgx-spark-gb10-128gb-vllm-tp1
- model instance id
- qwen-qwen3-5-27b--nvfp4
- recipe source
- localmaxxing
- schema version
- local-ai-registry/v1
- speed sweep ids
- qwen3-5-27b-nvfp4-dgx-spark-gb10-128gb-vllm-tp1-sweep
- status
- candidate
capabilities
draft launch
- accelerator backend
- nvidia
- arguments
- --model, Qwen/Qwen3.5-27B, --tensor-parallel-size, 1, --host, 0.0.0.0, --port, 8000, --max-model-len, 4096
- container port
- 8,000
- host port
- 8,000
- image
- vllm/vllm-openai@sha256:0a51ea5b4ae2dc5d81890e5173f54203d2a3ae0cfffe51b8fd2afd4391bfd967
- ipc
- host
- kind
- docker
- shm size
- 16g
- synthesized · generated at
- 2026-08-31T22:12:17Z
- synthesized · image provenance
- deepseek-fp8-rtx-pro-6000-blackwell-96gb-vllm-tp1
- synthesized · template
- vllm-openai-v1
mounts
| read only | target |
|---|---|
| No | /root/.cache/huggingface |
engine
- name
- vllm
- version
- 0.19.2rc1.dev213+g9558f4390.d20260426
serving
- max concurrency
- 1
- max context tokens
- 4,096
- tensor parallel
- 1
Provenance & metadata (3)
facts
- capabilities.chat · provenance · captured at
- 2026-08-30T09:26:09Z
capabilities.chat · reason capability-not-verified
capabilities.chat · state unknown
- capabilities.reasoning · provenance · captured at
- 2026-08-30T09:26:09Z
capabilities.reasoning · reason capability-not-verified
capabilities.reasoning · state unknown
- capabilities.tools · provenance · captured at
- 2026-08-30T09:26:09Z
capabilities.tools · reason capability-not-verified
capabilities.tools · state unknown
- capabilities.vision · provenance · captured at
- 2026-08-30T09:26:09Z
capabilities.vision · reason capability-not-verified
capabilities.vision · state unknown
- engine.graph mode · provenance · captured at
- 2026-08-30T09:26:09Z
engine.graph mode · reason runtime-detail-not-published
engine.graph mode · state unknown
- serving.kv cache tokens · provenance · captured at
- 2026-08-30T09:26:09Z
serving.kv cache tokens · reason kv-cache-capacity-not-published
serving.kv cache tokens · state unknown
metadata
- localmaxxing · backend
- cuda
- localmaxxing · hardware label
- GB10 Grace Blackwell
- localmaxxing · notes
- Qwen3.5-27B root model with AxionML NVFP4 weights on NVIDIA DGX Spark GB10. FlashQLA V2 HKV-output prefill integration, BK=128/BV=128, prefix caching disabled, chunked prefill enabled. N=30 at pp=2048/tg=32/c=1: tokSPrefill mean 3132.10 tok/s, median 3131.06, std 6.72; tokSOut mean 11.49 tok/s; TTFT mean 658.47 ms. Server logs confirmed [flashqla-v2] active and short-decode-preserve-coherence. Full Docker reproduction, patches, commands, and raw JSON: https://github.com/my-other-github-account/spark-bench-reproducers/tree/main/vllm-prefill-flashqla-hkv-spark . By @banana_baeee.
- localmaxxing · observed command
- VLLM_NVFP4_GEMM_BACKEND=cutlass FLASHQLA_HKV_O_BK=128 FLASHQLA_HKV_O_BV=128 vllm serve /models/AxionML-Qwen3.5-27B-NVFP4 --host 127.0.0.1 --port 8000 --trust-remote-code --max-model-len 4096 --served-model-name qwen35-27b-axionml-nvfp4 --generation-config vllm --load-format fastsafetensors --attention-backend FLASH_ATTN --gpu-memory-utilization 0.90 --max-num-batched-tokens 8192 --max-num-seqs 1 --enable-chunked-prefill
- localmaxxing · run id
- cmouqgx9q00jtld01ajgiran7
- localmaxxing · tokenized · arguments
- vllm, serve, /models/AxionML-Qwen3.5-27B-NVFP4, --host, 127.0.0.1, --port, 8000, --trust-remote-code, --max-model-len, 4096, --served-model-name, qwen35-27b-axionml-nvfp4, --generation-config, vllm, --load-format, fastsafetensors, --attention-backend, FLASH_ATTN, --gpu-memory-utilization, 0.90, --max-num-batched-tokens, 8192, --max-num-seqs, 1, --enable-chunked-prefill
- localmaxxing · tokenized · environment · FLASHQLA HKV O BK
- 128
- localmaxxing · tokenized · environment · FLASHQLA HKV O BV
- 128
- localmaxxing · tokenized · environment · VLLM NVFP4 GEMM BACKEND
- cutlass
- localmaxxing · tokenized · fidelity
- faithful
provenance
- captured at
- 2026-08-30T09:26:09Z
sources
| captured at | kind | url |
|---|---|---|
| 2026-08-30T09:26:09Z | normalized-recipe | www.localmaxxing.com/en/runs/cmouqgx9q00jtld01ajgiran7 ↗ |