Pooling Engram Conditional Memory in Large Language Models using CXL

Fuente: arXiv
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Autori principali: Ma, Ruiyang, Ma, Teng, Su, Zhiyuan, Zha, Hantian, Zhao, Xinpeng, Shang, Xuchun, Yi, Xingrui, Liu, Zheng, Cao, Zhu, Wu, An, Dou, Zhichong, Liu, Ziqian, Kuang, Daikang, Luo, Guojie
Natura: Preprint
Pubblicazione: 2026
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author Ma, Ruiyang
Ma, Teng
Su, Zhiyuan
Zha, Hantian
Zhao, Xinpeng
Shang, Xuchun
Yi, Xingrui
Liu, Zheng
Cao, Zhu
Wu, An
Dou, Zhichong
Liu, Ziqian
Kuang, Daikang
Luo, Guojie
author_facet Ma, Ruiyang
Ma, Teng
Su, Zhiyuan
Zha, Hantian
Zhao, Xinpeng
Shang, Xuchun
Yi, Xingrui
Liu, Zheng
Cao, Zhu
Wu, An
Dou, Zhichong
Liu, Ziqian
Kuang, Daikang
Luo, Guojie
contents Engram conditional memory has emerged as a promising component for LLMs by decoupling static knowledge lookup from dynamic computation. Since Engram exhibits sparse access patterns and supports prefetching, its massive embedding tables are well-suited for offloading to lower-tier memory. In this paper, we propose using Compute Express Link (CXL) memory pool for Engram storage. Compared to RDMA, CXL provides fine-grained and low-latency access required by minimal and discrete retrieval patterns of Engram. We integrate the CXL-based Engram pool into SGLang, achieving near-DRAM end-to-end performance. This provides a scalable and cost-efficient storage solution for future Engram-integrated LLMs without compromising inference performance.
format Preprint
id arxiv_https___arxiv_org_abs_2603_10087
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Pooling Engram Conditional Memory in Large Language Models using CXL
Ma, Ruiyang
Ma, Teng
Su, Zhiyuan
Zha, Hantian
Zhao, Xinpeng
Shang, Xuchun
Yi, Xingrui
Liu, Zheng
Cao, Zhu
Wu, An
Dou, Zhichong
Liu, Ziqian
Kuang, Daikang
Luo, Guojie
Hardware Architecture
Distributed, Parallel, and Cluster Computing
Engram conditional memory has emerged as a promising component for LLMs by decoupling static knowledge lookup from dynamic computation. Since Engram exhibits sparse access patterns and supports prefetching, its massive embedding tables are well-suited for offloading to lower-tier memory. In this paper, we propose using Compute Express Link (CXL) memory pool for Engram storage. Compared to RDMA, CXL provides fine-grained and low-latency access required by minimal and discrete retrieval patterns of Engram. We integrate the CXL-based Engram pool into SGLang, achieving near-DRAM end-to-end performance. This provides a scalable and cost-efficient storage solution for future Engram-integrated LLMs without compromising inference performance.
title Pooling Engram Conditional Memory in Large Language Models using CXL
topic Hardware Architecture
Distributed, Parallel, and Cluster Computing
url https://arxiv.org/abs/2603.10087