Redditor skeole reports that Qwen3.8-27B on one RTX 3090 sustained a roughly 21-day CUDA-engine development run with about 12 human messages, producing working kernels but no llama.cpp performance win and spending roughly 83 hours on compaction, suggesting local long-running agents are feasible but context maintenance is a major bottleneck.

state: seedheat: lowuncertainty: highlong-running-agents agent-harnesses local-inference context-compactionskeole

Measured heat

now 0 pts/hpeak 0 pts/hcomments 0/hpeers p0momentum: steady1 platformsage 502h

points/hour across evidence · reading as of 2026-10-12 02:59:37.977291+11:00 · deterministic, not a model opinion

09-20 18:26	⭐ origin directly observed	The bear can dance: Qwen 3.8 27B on one 3090 for 3 weeks skeole on r/LocalLLaMA	—
09-20 18:26	amplified on r/LocalLLaMA 👑	reddit.post.1wloora skeole	peak 182 · 39 comments · 100% of case engagement
09-20 19:20	our radar first saw it · +0.9h	discovery anchor: reddit.post.1wloora	—

pace: p76 vs 1032 stories at the 336h mark (now 502h old) — ahead of epoch-price-of-thought (1.0x), behind minimax-code-open-source (1.0x)

source	object	author	score	comments
🟠 reddit ⭐	The bear can dance: Qwen 3.8 27B on one 3090 for 3 weeks LocalLLaMA	skeole	180	39

2026-09-22T03:28:01Z
The report remains a useful bounded anecdote, but attention has stalled and no independent reproduction, code release, or verification has emerged. Its strongest implication is the measured context-maintenance cost, not demonstrated competitive autonomy.
2026-09-21T00:24:25Z
case created — A bounded multi-week run provides concrete intervention, outcome, and compaction measurements rather than a generic autonomy claim.

09-22 13:28repriceThe report remains a useful bounded anecdote, but attention has stalled and no independent reproduction, code release, or verification has emerged. Its strongest implication is the measured context-ma
09-22 07:20sensor_dirtyvelocity_spike
09-22 03:23sensor_dirtycomment_update
09-21 22:20sensor_dirtyvelocity_spike
09-21 20:21sensor_dirtycomment_update
09-21 16:20sensor_dirtyvelocity_spike