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Mesh-Attention improves LLM scaling with better data locality · arXiv paper

Researchers have developed Mesh-Attention, a novel communication-efficient distributed attention mechanism designed to improve data locality for scaling large language models (LLMs) to long contexts. Unlike previous methods like Ring-Attention, which sacrifices KV locality, Mesh-Attention assigns GPUs a 2D tile to balance Q and KV locality, resulting in asymptotically lower communication complexity. Experiments on up to 256 GPUs with 1M-token sequences demonstrated significant speedups over existing methods, maintaining performance advantages as scale increases. AI

IMPACT Enhances the efficiency of training large language models on long contexts, potentially enabling more capable and scalable AI systems.

RANK_REASON The cluster contains a new academic paper detailing a novel technical approach to distributed attention for LLMs. [lever_c_demoted from research: ic=1 ai=1.0]

Read on arXiv cs.AI →

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Mesh-Attention improves LLM scaling with better data locality · arXiv paper

COVERAGE [1]

  1. arXiv cs.AI TIER_1 English(EN) · Sirui Chen, Jingji Chen, Siqi Zhu, Ziheng Jiang, Yanghua Peng, Xuehai Qian ·

    Mesh-Attention: A New Communication-Efficient Distributed Attention with Improved Data Locality

    arXiv:2512.20968v2 Announce Type: replace-cross Abstract: Distributed attention is essential for scaling large language models (LLMs) to long contexts, yet existing methods either have limited parallelism or incur high communication costs. Ulysses uses efficient all-to-all commun…