Local AI · Recipe · 2× DGX Spark

Qwen3.8-Flash-Next INT4-AutoRound (v5.2) with vLLM on 2× DGX Spark

Qwen3.8-Flash-Next INT4-AutoRound (v5.2) with vLLM on 2× DGX Spark: 74 tok/s according to github.com (dataset as of Sep 29, 2026).

by myllmbox

74tok/sEveryday

1 request, prose prompt (long story), thinking off, with MTP

Source: github.com
Intelligence (original model) · Artificial Analysis40with thinking

Install: Qwen3.8-Flash-Next INT4-AutoRound (v5.2) with vLLM on 2× DGX Spark

Command
git clone https://github.com/myllmbox/qwen38-flash-next-cluster-recipe.git && cd qwen38-flash-next-cluster-recipe && ./run.sh

Full instructions in the README
Repo

Engine

Engine
vLLM 0.30 (Image myllmbox/qwen38-flash-next-cluster-vllm:v5.2; RecoverSSM, dynamischer Draft-Depth 3–7 in Full-CUDA-Graphs, sampled Drafts + Block-Verifikation, One-Shot-RoCE-All-Reduce, Dual-Rail, TP=2, 64 Seats) — Kit v5.2
Quantization
INT4-AutoRound (azampatti): int4-Experten, fp8-Seitenschichten; n-gram-Tabelle beim Laden fp8 → NVFP4, halb pro Box auf der GPU; KV-Pin 29G/Box (1.829.182 Tokens)
Model family
Qwen3.8-Flash-Next
Context
262,144
Parameters
125B-A5B (Modellname); 5 von 512 Experten pro Token
Creator
myllmbox
GitHub stars
127
Repo updated
Oct 6, 2026

Measurements

Every sourced value of this recipe, each with its condition and source. Bars relative to the largest value in the group.

Decode · 1 request

  • Everyday (decode)74 tok/sLong prose (7.000-Wörter-Story), c=1, Thinking off, Mittel aus 3 Runs Source 
  • Mixed (decode)100 tok/sMixed (code + explanation), c=1, Thinking off, Mittel aus 3 Runs; Code (TypeScript) 133,6, structured 124,4 Source 
  • Peak (decode)177 tok/sBestes 10-s-Fenster bei c=1 (Thinking-on-Request: 93,2 Ø / 176,8 peak); aggregiert c=64: 1.174,0 peak / 968,4 Ø (mixed) Source 

Prefill by context

Time to first token

Shorter is better.

  • Prompt not stated360 mscontext 1K · First token, 1k prompt: 0,36 s Source 

What you need

Hardware
2 × NVIDIA DGX Spark (GB10)
Engine
vLLM 0.30 (Image myllmbox/qwen38-flash-next-cluster-vllm:v5.2; RecoverSSM, dynamischer Draft-Depth 3–7 in Full-CUDA-Graphs, sampled Drafts + Block-Verifikation, One-Shot-RoCE-All-Reduce, Dual-Rail, TP=2, 64 Seats) — Kit v5.2
Context
262,144 tokens

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Details

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