🤯逆天了！Qwen 3.8 27B注意力层被彻底击穿了！10M超长上下文下，Prefill注意力快72.4倍、Decode快42.5倍！端到端首token延迟砍到约1/9！
This is a dev post classified by AGK Intelligence as AI dev tools (a tool drop), kept by the Dev Radar because it carries real work, not commentary.
🤯逆天了！Qwen 3.8 27B注意力层被彻底击穿了！10M超长上下文下，Prefill注意力快72.4倍、Decode快42.5倍！端到端首token延迟砍到约1/9！ 闲置GPU的朋友注意了：把这个新方法丢给Claude/Codex，让它直接移植到Qwen 27B上！注意力算法“移植”已经被验证可行。 惊人之处： 🔹10M token（约1000万）超长上下文下，传统稀疏注意力有98%时间都在“找该看哪些token”，真正算注意力反而没那么贵 🔹新方法Latent Sparse Attention (LSA)：先把Key按“意思相近”聚类成层级结构，Query只看聚类中心，再挑最相关的几个桶去算。从“全扫”变成“树搜索” 🔹实测（Qwen-3.8-27B）：单层注意力Prefill快72.4倍，Decode快42.5倍！端到端首token延迟也能降到约1/9 🔹精度几乎不掉，甚至在RULER等长上下文任务上还略好一点 🔹只需要短蒸馏训练Indexer（基座模型冻结），就能套到现成模型上。Native训练版本也能跟上全注意力精度，还更快 🔹对GPU紧缺党意义巨大：超长上下文（百万级）不再需要堆满H100/H200才能跑，单卡/少量卡也能玩得起真正长上下文Agent 适配步骤： 1️⃣git clone 仓库后用 uv sync 安装（Python 3.12）
Posted by SuSu_酥酥👅 (25.9k followers) 1 h ago · 23 likes · 1.8k views · view the original post on X. Kept by the Dev Radar as AI dev tools. Tools mentioned: latent-sparse-attention.
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