[data-angel]

Pins Enntity/atlas sparkqwen/atlas-20261016-drafter @ 1aa8d99f (tree a04c2e03). The release turns on five settings in all three profiles:

• ATLAS_QWEN4EXP_MTP_ABSORB
• ATLAS_QWEN4EXP_MTP_PREFILL=16384
• ATLAS_QWEN4EXP_MTP_BF16_ROUTER
• ATLAS_MTP_DEEP_WINDOW=16
• ATLAS_PREFILL_QUEUE_FIRST_CHUNK

Image tag (install tree): f399caa2fb5e.

What changed in the engine (docs/ENGINE.md#drafter-series):

• Drafter context. The MTP drafter's KV started empty for every request and kept rows built from its own guesses. It is now rewritten from the target's verified rows after every verify, and filled over the prompt at the end of prefill. With 7 drafts per step, the share of steps whose 7th draft was accepted went from 0.44 to 0.81.
• Admission order. A prompt longer than one prefill chunk queues its first chunk behind the prefills already in flight, so staggered long prompts get their first tokens in order. Prompts that fit in one chunk still run at admission.
• Drafter router. The drafter's router runs in BF16; the target's stays NVFP4.
• Depth decisions. The depth controller decides every 16 verifies instead of every 48.
• W8A8 hardening. Prefill numerics are unchanged.

Measured through the image ./start.sh built from a fresh clone, same pair, clocks uncapped (results/2026-10-16-drafter/RESULT.md):

	This release	FP4-Local release
RigMark code / prose / structured (tok/s)	112.7 / 56.9 / 127.5	96.5 / 57.1 / 104.4
sparkDash one stream: structured / prose / code / JSON	134.0 / 85.4 / 108.3 / 109.3	111.9 / 81.8 / 101.5 / 95.7
Four ~18K prompts arriving 1 s apart: first tokens	4.7 / 8.4 / 12.1 / 15.8 s	16.2 / 15.9 / 15.7 / 15.4 s
Four new chats on one ~20K system prompt: first turn	5.8 / 6.1 / 6.4 / 6.7 s	5.8 / 7.6 / 9.5 / 11.3 s

Gates:

• Greedy output is identical to a speculation-off, cache-off reference: 8/8 at C1, C4 and C8, and 8/8 on prefix hits.
• Prompt-logprob hash 798fc6cc2641, the same as the FP4-Local release.
• Quality 40/40 and 12/12, tools 21/21, agentic 20/20, RigMark 9/9.
• The README, banner and social preview carry these numbers.

🤖 Generated with Claude Code