Quasar

A narrow inference engine for Qwen3.6-27B-MTP and Qwen3.8-27B-MTP (hybrid GDN+attention, trained-in MTP heads) and their fine-tunes on a single RTX 5090 (3090 and 4090/Ada also supported; Apple-silicon Metal backend for the q4s tier). One model family, one GPU, as fast as possible. In the spirit of antirez/ds4

Why this is interesting

Fastest of the four engines tested, on this harness — across two independent runs. Mean wall per SWE-bench instance, same 12 tasks, one harness, unchanged competitor binaries:

leg 2026-08-17 2026-08-19
q27 q5f 46.8 s 46.3 s
q27 q4s 48.5 s 49.6 s
llama.cpp 71.4 s 59.9 s
vLLM 84.5 s 78.8 s
ninfer NVFP4 96.8 s 113.8 s
ninfer int8 327.4 s 266.2 s

Two runs is what it takes to see the honest shape: q27 is the only leg that reproduced (46.8 -> 46.3 s), while every competitor moved 7-19% on identical binaries. So the ordering is stable but the margins are not — q27’s edge over llama.cpp reads 1.53x one day and 1.29x the next. Quoting either as the number overstates the precision.…

leg	2026-08-17	2026-08-19
q27 q5f	46.8 s	46.3 s
q27 q4s	48.5 s	49.6 s
llama.cpp	71.4 s	59.9 s
vLLM	84.5 s	78.8 s
ninfer NVFP4	96.8 s	113.8 s
ninfer int8	327.4 s	266.2 s

score = signal / reach signal = 0.25·commit_velocity // commits in last 90 days (cap 30) + 0.20·contributor_work // unique authors × velocity (cap 100) + 0.20·issue_resolution // closed ÷ total issues + 0.20·fork_ratio // forks ÷ stars (proxy for real usage) + 0.10·release_cadence // releases in 90 days (cap 3) + age_bonus // +0 to +0.30 after 6 months + homepage_bonus // +0.05 if homepage is set reach = log₁₀(stars + watchers + 10)█

health = 0.35·recency // days since last commit (90d decay) + 0.25·cadence // commit rhythm consistency + 0.20·issue_health // closed ÷ total issues + 0.20·pr_health // merged ÷ total PRs█

Healthy 80 – 100 active, responsive, regular releases Stable 60 – 79 maintained, steady, no alarms Quiet 40 – 59 slowing down — watch this one At Risk 0 – 39 going dark · candidate for rescue█

solo_builder one person holds > 80% of commits (last 180d) needs_contributors has open "help wanted" or "good first issue" labels hidden_gem < 100 stars · active in last 3 months · documented legacy_hero repo > 5 years old · committed this year fork_magnet forks/stars > 0.5 · used as template or dependency release_machine 5+ releases in the last 90 days under_pressure > 10 open issues · ≤ 2 contributors · health ≥ 60 community_watch watchers > stars · devs tracking before the public community_hub GitHub Discussions enabled · > 20 discussions funded maintainer has active funding channel█