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Modern large language models (LLMs) drive interactive AI systems but are bottlenecked by the memory-heavy growth of key-value (KV) caches, which limits real-time throughput under concurrent loads. Existing KV-cache compression methods rely…

机器学习 · 计算机科学 2026-01-07 Joseph Kampeas , Emir Haleva

Attention mechanisms underpin the success of large language models (LLMs), yet their substantial computational and memory overhead poses challenges for optimizing efficiency and performance. A critical bottleneck arises as KV cache and…

计算与语言 · 计算机科学 2025-07-24 Luoyang Sun , Cheng Deng , Jiwen Jiang , Xinjian Wu , Haifeng Zhang , Lei Chen , Lionel Ni , Jun Wang

Deploying long-context large language models (LLMs) is essential but poses significant computational and memory challenges. Caching all Key and Value (KV) states across all attention heads consumes substantial memory. Existing KV cache…

计算与语言 · 计算机科学 2024-10-15 Guangxuan Xiao , Jiaming Tang , Jingwei Zuo , Junxian Guo , Shang Yang , Haotian Tang , Yao Fu , Song Han

As large language models (LLMs) take on complex tasks, their inputs are supplemented with longer contexts that incorporate domain knowledge. Yet using long contexts is challenging, as nothing can be generated until the whole context is…

Context lengths of Large Language Models (LLMs) have exploded in recent years, with 128k-token context becoming a standard and million-token context becoming a reality. Efficiently supporting long-context inference remains challenging as…

计算与语言 · 计算机科学 2024-10-08 Isaac Rehg

As the length of input text increases, the key-value (KV) cache in LLMs imposes prohibitive GPU memory costs and limits long-context inference on resource constrained devices. Existing approaches, such as KV quantization and pruning, reduce…

机器学习 · 计算机科学 2025-12-24 Tenghui Li , Guoxu Zhou , Xuyang Zhao , Yuning Qiu , Qibin Zhao

Transformers, driven by attention mechanisms, form the foundation of large language models (LLMs). As these models scale up, efficient GPU attention kernels become essential for high-throughput and low-latency inference. Diverse LLM…

分布式、并行与集群计算 · 计算机科学 2025-04-23 Zihao Ye , Lequn Chen , Ruihang Lai , Wuwei Lin , Yineng Zhang , Stephanie Wang , Tianqi Chen , Baris Kasikci , Vinod Grover , Arvind Krishnamurthy , Luis Ceze

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…

人工智能 · 计算机科学 2026-05-29 Soumyadeep Jana , Sagar Nishad , Sanasam Ranbir Singh

Disaggregated Large Language Model (LLM) inference has gained popularity as it separates the computation-intensive prefill stage from the memory-intensive decode stage, avoiding the prefill-decode interference and improving resource…

分布式、并行与集群计算 · 计算机科学 2025-02-07 Zeyu Zhang , Haiying Shen , Shay Vargaftik , Ran Ben Basat , Michael Mitzenmacher , Minlan Yu

Decoder-only large language models (LLMs) have been increasingly adopted to build embedding models for diverse tasks. To overcome the inherent limitations of causal attention in representation learning, many existing methods modify the…

计算与语言 · 计算机科学 2026-05-05 Ailiang Lin , Zhuoyun Li , Yusong Wang , Kotaro Funakoshi , Manabu Okumura

Weight-only quantization is widely used to mitigate the memory-bound nature of LLM inference. Codebook-based methods extend this trend by achieving strong accuracy in the extremely low-bit regime (e.g., 2-bit). However, current kernels rely…

机器学习 · 计算机科学 2025-12-23 Gunho Park , Jeongin Bae , Byeongwook Kim , Baeseong park , Jiwon Ryu , Hoseung Kim , Se Jung Kwon , Dongsoo Lee

How to efficiently serve LLMs in practice has become exceptionally challenging due to their prohibitive memory and computation requirements. In this study, we investigate optimizing the KV cache, whose memory footprint poses a critical…

计算与语言 · 计算机科学 2025-06-10 Akshat Sharma , Hangliang Ding , Jianping Li , Neel Dani , Minjia Zhang

In long-context Large Language Model (LLM) inference, the Time-To-First-Token (TTFT) latency incurred by the prefill stage has become the foremost bottleneck limiting interactive performance and deployment cost. KV Cache reuse offers a…

硬件体系结构 · 计算机科学 2026-05-26 Fei li , Song Liu , Yan Liu , Jinhua Cui , Shiqiang Nie , Jinyu Wang , Weiguo Wu

Large Vision-Language Models (VLMs) have achieved remarkable success in multi-modal reasoning, but their inference time efficiency remains a significant challenge due to the memory overhead during decoding, especially when the query and…

计算机视觉与模式识别 · 计算机科学 2026-03-26 Fatih Ilhan , Gaowen Liu , Ramana Rao Kompella , Selim Furkan Tekin , Tiansheng Huang , Zachary Yahn , Yichang Xu , Ling Liu

With the rapid development of large language models (LLMs), handling long context has become one of the vital abilities in LLMs. Such long-context ability is accompanied by difficulties in deployment, especially due to the increased…

计算与语言 · 计算机科学 2025-08-19 Zhuorui Liu , Chen Zhang , Dawei Song

High throughput serving of large language models (LLMs) requires batching sufficiently many requests at a time. However, existing systems struggle because the key-value cache (KV cache) memory for each request is huge and grows and shrinks…

Long-context inference in decoder-only language models is costly because long prompts are processed during Prefill, cached at every layer, and repeatedly attended to during autoregressive Decode. We introduce \emph{Shallow Prefill, dEEp…

人工智能 · 计算机科学 2026-05-08 Jungsuk Oh , Hyeseo Jeon , Hyunjune Ji , Kyongmin Kong , Jay-Yoon Lee

Long-context LLMs increasingly rely on extended, reusable prefill prompts for agents and domain Q&A, pushing attention and KV-cache to become the dominant decode-time bottlenecks. While sparse attention reduces computation and transfer…

机器学习 · 计算机科学 2026-04-13 Chuxu Song , Zhencan Peng , Jiuqi Wei , Chuanhui Yang

Large Language Models (LLMs) are widely used in generative applications such as chatting, code generation, and reasoning. However, many realworld workloads such as classification, question answering, recommendation, and text embedding rely…

计算与语言 · 计算机科学 2025-11-13 Dinghong Song , Yuan Feng , Yiwei Wang , Shangye Chen , Cyril Guyot , Filip Blagojevic , Hyeran Jeon , Pengfei Su , Dong Li

Transformer-based large language models (LLMs) have already achieved remarkable results on long-text tasks, but the limited GPU memory (VRAM) resources struggle to accommodate the linearly growing demand for key-value (KV) cache as the…

计算与语言 · 计算机科学 2025-03-21 Shibo Jie , Yehui Tang , Kai Han , Zhi-Hong Deng , Jing Han