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Modern large language models (LLMs) extend context lengths to millions of tokens, enabling coherent, personalized responses grounded in long conversational history. However, the Key-Value (KV) cache grows linearly with the extended dialogue…

Computation and Language · Computer Science 2026-05-21 Minsoo Kim , Arnav Kundu , Han-Byul Kim , Richa Dixit , Minsik Cho

Modern large language model (LLM) systems increasingly rely on multi-turn pipelines that are composed of multiple task-specific adapters, yet existing serving frameworks remain inefficient, incurring substantial recomputation overhead when…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-12-23 Allison Li , Kristjan Greenewald , Thomas Parnell , Navid Azizan

The scaling of Large Language Model (LLM) services faces significant cost and latency challenges, making effective caching under tight capacity crucial. Existing cache replacement policies, from heuristics to learning-based methods,…

Databases · Computer Science 2026-02-26 Yuchong Wu , Zihuan Xu , Wangze Ni , Peng Cheng , Lei Chen , Xuemin Lin , Heng Tao Shen , Kui Ren

Processing long contexts remains a challenge for large language models (LLMs) due to the quadratic computational and memory overhead of the self-attention mechanism and the substantial KV cache sizes during generation. We propose LLoCO, a…

Computation and Language · Computer Science 2024-10-18 Sijun Tan , Xiuyu Li , Shishir Patil , Ziyang Wu , Tianjun Zhang , Kurt Keutzer , Joseph E. Gonzalez , Raluca Ada Popa

Retrieval-Augmented Generation (RAG) is often used with Large Language Models (LLMs) to infuse domain knowledge or user-specific information. In RAG, given a user query, a retriever extracts chunks of relevant text from a knowledge base.…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-02-25 Shubham Agarwal , Sai Sundaresan , Subrata Mitra , Debabrata Mahapatra , Archit Gupta , Rounak Sharma , Nirmal Joshua Kapu , Tong Yu , Shiv Saini

Large language model agents rely on effective model context to obtain task-relevant information for decision-making. Many existing context engineering approaches primarily rely on the context generated from the past experience and retrieval…

Artificial Intelligence · Computer Science 2026-04-10 Linbo Liu , Guande Wu , Han Ding , Yawei Wang , Qiang Zhou , Yuzhe Lu , Zhichao Xu , Huan Song , Panpan Xu , Lin Lee Cheong

Multi-hop reasoning, which requires multi-step reasoning based on the supporting documents within a given context, remains challenging for large language models (LLMs). LLMs often struggle to filter out irrelevant documents within the…

Computation and Language · Computer Science 2025-04-30 Sangwon Yu , Ik-hwan Kim , Jongyoon Song , Saehyung Lee , Junsung Park , Sungroh Yoon

Generative reasoning with large language models (LLMs) often involves long decoding sequences, leading to substantial memory and latency overheads from accumulating key-value (KV) caches. While existing KV compression methods primarily…

Machine Learning · Computer Science 2025-12-16 Hui Zeng , Daming Zhao , Pengfei Yang , WenXuan Hou , Tianyang Zheng , Hui Li , Weiye Ji , Jidong Zhai

Recent investigations into effective context lengths of modern flagship large language models (LLMs) have revealed major limitations in effective question answering (QA) and reasoning over long and complex contexts for even the largest and…

Computation and Language · Computer Science 2025-10-28 Anwesan Pal , Karen Hovsepian , Tinghao Guo , Mengnan Zhao , Somendra Tripathi , Nikos Kanakaris , George Mihaila , Sumit Nigam

Large Language Models (LLMs) are increasingly deployed across edge and cloud platforms for real-time question-answering and retrieval-augmented generation. However, processing lengthy contexts in distributed systems incurs high…

Computation and Language · Computer Science 2025-05-19 Camille Couturier , Spyros Mastorakis , Haiying Shen , Saravan Rajmohan , Victor Rühle

Recent advancements in Large Language Models (LLMs) have yielded remarkable success across diverse fields. However, handling long contexts remains a significant challenge for LLMs due to the quadratic time and space complexity of attention…

Computation and Language · Computer Science 2024-09-02 Weijie Liu , Zecheng Tang , Juntao Li , Kehai Chen , Min Zhang

KV cache has traditionally been stored in GPU memory to accelerate the decoding phase of large language model (LLM) inference. However, it is increasingly necessary to move KV caches outside GPU devices, to enable cache reuse across…

Machine Learning · Computer Science 2025-12-08 Yuhan Liu , Yihua Cheng , Jiayi Yao , Yuwei An , Xiaokun Chen , Shaoting Feng , Yuyang Huang , Samuel Shen , Rui Zhang , Kuntai Du , Junchen Jiang

Key-Value (KV) cache remains a major bottleneck for deploying Large Language Models (LLMs) in long-generation tasks. Prior work often applies uniform compression across both prefill and decoding caches, but compressing the prefill cache…

Artificial Intelligence · Computer Science 2026-05-29 Soumyadeep Jana , Sagar Nishad , Sanasam Ranbir Singh

Large language models (LLMs) have demonstrated impressive capabilities and are receiving increasing attention to enhance their reasoning through scaling test--time compute. However, their application in open--ended, knowledge--intensive,…

Artificial Intelligence · Computer Science 2025-05-27 Yize Zhang , Tianshu Wang , Sirui Chen , Kun Wang , Xingyu Zeng , Hongyu Lin , Xianpei Han , Le Sun , Chaochao Lu

While humans naturally learn and adapt from past experiences, large language models (LLMs) and their agentic counterparts struggle to retain reasoning from previous tasks and apply them in future contexts. To address this limitation, we…

Computation and Language · Computer Science 2025-05-21 Peter Baile Chen , Yi Zhang , Dan Roth , Samuel Madden , Jacob Andreas , Michael Cafarella

To tackle long-context reasoning tasks without the quadratic complexity of standard attention mechanisms, approaches based on agent memory have emerged, which typically maintain a dynamically updated memory when linearly processing document…

Computation and Language · Computer Science 2026-05-12 Baibei Ji , Xiaoyang Weng , Juntao Li , Zecheng Tang , Yihang Lou , Min Zhang

Large language models face challenges in long-context question answering, where key evidence of a query may be dispersed across millions of tokens. Existing works equip large language models with a memory buffer that is dynamically updated…

Computation and Language · Computer Science 2026-03-03 Yaorui Shi , Yuxin Chen , Siyuan Wang , Sihang Li , Hengxing Cai , Qi Gu , Xiang Wang , An Zhang

Transformer-based Large Language Models (LLMs) have exhibited remarkable success in extensive tasks primarily attributed to self-attention mechanism, which requires a token to consider all preceding tokens as its context to compute…

Computation and Language · Computer Science 2025-08-05 Yaofo Chen , Zeng You , Shuhai Zhang , Haokun Li , Yirui Li , Yaowei Wang , Mingkui Tan

Large Language Models (LLMs), despite their remarkable performance across a wide range of tasks, necessitate substantial GPU memory and consume significant computational resources. Beyond the memory taken up by model weights, the memory…

Computation and Language · Computer Science 2024-06-24 Jincheng Dai , Zhuowei Huang , Haiyun Jiang , Chen Chen , Deng Cai , Wei Bi , Shuming Shi

Recent advances in long-text understanding have pushed the context length of large language models (LLMs) up to one million tokens. It boosts LLMs's accuracy and reasoning capacity but causes exorbitant computational costs and…

Computation and Language · Computer Science 2025-05-19 Huan Yang , Renji Zhang , Mingzhe Huang , Weijun Wang , Yin Tang , Yuanchun Li , Yunxin Liu , Deyu Zhang