🚀 Introducing FlashQLA: high-performance linear attention kernels built on TileLang. ⚡ 2–3× forwar...
TL;DR · AI 摘要
FlashQLA 是基于 TileLang 的高性能线性注意力内核，提供2-3倍前向加速和2倍后向加速，专为个人设备上的代理AI设计。
核心要点
- FlashQLA 提供2-3倍前向加速和2倍后向加速。
- 通过门控驱动的自动片内CP提高SM利用率。
- 16阶段Warp特化流水线实现高效的后向传递。
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- FlashQLA: 高性能线性注意力内核
金句 / Highlights
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🚀 Introducing FlashQLA: high-performance linear attention kernels built on TileLang.
⚡ 2–3× forward speedup. 2× backward speedup.
💡Key insights: 1. Gate-driven automatic intra-card CP. 2. Hardware-friendly algebraic reformulation. 3. TileLang fused warp-specialized kernels.
⚡ 2–3× forward speedup. 2× backward speedup. 💻 Purpose-built for agentic AI on your personal devices.
💡Key insights:
- Gate-driven automatic intra-card CP.
- Hardware-friendly algebraic https://t.co/4Vhyyw5RuB" / X
Introducing FlashQLA: high-performance linear attention kernels built on TileLang. 
2–3× forward speedup. 2× backward speedup. 
Purpose-built for agentic AI on your personal devices. 
Key insights: 1. Gate-driven automatic intra-card CP. 2. Hardware-friendly algebraic reformulation. 3. TileLang fused warp-specialized kernels. FlashQLA boosts SM utilization via automatic intra-device CP. The gains are especially pronounced for TP setups, small models, and long-context workloads. Instead of fusing the entire GDN flow into a single kernel, we split it into two kernels optimized for CP and backward efficiency. At large batch sizes this incurs extra memory I/O overhead vs. a fully fused approach, but it delivers better real-world performance on edge devices and long-context workloads. The backward pass was the hardest part: we built a 16-stage warp-specialized pipeline under extremely tight on-chip memory constraints, ultimately achieving 2×+ kernel-level speedups. We hope this is useful to the community!
Learn more: 
Blog: qwen.ai/blog?id=flashq Code: github.com/QwenLM/FlashQLA
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