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Based: Simple linear attention language models balance the recall‑throughput tradeoff

Blog post from Cartesia

Post Details
Company
Date Published
Author
Sabri Eyuboglu
Word Count
2,348
Company Posts That Month
1
Language
English
Hacker News Points
-
Post removed?
No
Summary

The research paper discusses the design and advantages of "Based," a new recurrent architecture developed to address the recall-memory tradeoff in language models. Based outperforms other efficient architectures such as Mamba and RWKV in recall-intensive tasks while maintaining fast generation speeds, achieving a 24x higher throughput than FlashAttention-2. The architecture leverages two attention techniques: sliding window attention for local token interactions and linear attention for global interactions, using a Taylor series approximation to keep the recurrent state size fixed. This allows Based to traverse the pareto frontier of the recall-memory tradeoff effectively. Despite its simplicity, Based shows strong performance on real-world language modeling tasks and curated recall-intensive benchmarks, although it still lags behind the strongest Transformer baselines in some cases. The research emphasizes the importance of efficient hardware usage and introduces new IO-aware algorithms and a CUDA DSL called ThunderKittens to enhance Based's performance.

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