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With the development of large language models (LLMs), it has become increasingly important to optimize hardware usage and improve throughput. In this paper, we study the inference optimization of the serving system that deploys LLMs. To…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-02-26 Bowen Pang , Kai Li , Ruifeng She , Feifan Wang

In Large Language Model (LLM) inference, the output length of an LLM request is typically regarded as not known a priori. Consequently, most LLM serving systems employ a simple First-come-first-serve (FCFS) scheduling strategy, leading to…

Machine Learning · Computer Science 2024-08-29 Yichao Fu , Siqi Zhu , Runlong Su , Aurick Qiao , Ion Stoica , Hao Zhang

Autoregressive models, despite their commendable performance in a myriad of generative tasks, face challenges stemming from their inherently sequential structure. Inference on these models, by design, harnesses a temporal dependency, where…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-11-06 Jinghan Yao , Nawras Alnaasan , Tian Chen , Aamir Shafi , Hari Subramoni , Dhabaleswar K. , Panda

Efficient inference with Large Language Models (LLMs) increasingly relies on Key-Value (KV) caches to store previously computed key and value vectors at each layer. These caches are essential to minimize redundant computation during…

Hardware Architecture · Computer Science 2026-04-08 Oteo Mamo , Olga Kogiou , Hyunjin Yi , Weikuan Yu

As large language models (LLMs) scale in size and adoption, their computational and environmental costs continue to rise. Prior benchmarking efforts have primarily focused on latency reduction in idealized settings, often overlooking the…

Computation and Language · Computer Science 2025-04-25 Jared Fernandez , Clara Na , Vashisth Tiwari , Yonatan Bisk , Sasha Luccioni , Emma Strubell

Optimizing the deployment of Large language models (LLMs) is expensive today since it requires experimentally running an application workload against an LLM implementation while exploring large configuration space formed by system knobs…

Scaling the input context length of a large language model (LLM) incurs a significant increase in computation cost and memory footprint to maintain the attention key-value (KV) cache. Existing KV cache compression methods suffer from…

Computation and Language · Computer Science 2025-01-31 Yuxiang Huang , Binhang Yuan , Xu Han , Chaojun Xiao , Zhiyuan Liu

Personalized recommendation is a ubiquitous application on the internet, with many industries and hyperscalers extensively leveraging Deep Learning Recommendation Models (DLRMs) for their personalization needs (like ad serving or movie…

Hardware Architecture · Computer Science 2024-10-30 Rishabh Jain , Vivek M. Bhasi , Adwait Jog , Anand Sivasubramaniam , Mahmut T. Kandemir , Chita R. Das

LLM inference is essential for applications like text summarization, translation, and data analysis, but the high cost of GPU instances from Cloud Service Providers (CSPs) like AWS is a major burden. This paper proposes InferSave, a…

Machine Learning · Computer Science 2025-04-17 Kihyun Kim , Jinwoo Kim , Hyunsun Chung , Myung-Hoon Cha , Hong-Yeon Kim , Youngjae Kim

The billion-scale Large Language Models (LLMs) need deployment on expensive server-grade GPUs with large-storage HBMs and abundant computation capability. As LLM-assisted services become popular, achieving cost-effective LLM inference on…

Hardware Architecture · Computer Science 2025-02-25 Lian Liu , Shixin Zhao , Bing Li , Haimeng Ren , Zhaohui Xu , Mengdi Wang , Xiaowei Li , Yinhe Han , Ying Wang

Large language model (LLM) inference serving systems are essential to various LLM-based applications. As demand for LLM services continues to grow, scaling these systems to handle high request rates while meeting latency Service-Level…

Machine Learning · Computer Science 2025-04-11 Shihong Gao , Xin Zhang , Yanyan Shen , Lei Chen

Large Language Models (LLMs) demonstrate substantial potential across a diverse array of domains via request serving. However, as trends continue to push for expanding context sizes, the autoregressive nature of LLMs results in highly…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-07-08 Bin Lin , Chen Zhang , Tao Peng , Hanyu Zhao , Wencong Xiao , Minmin Sun , Anmin Liu , Zhipeng Zhang , Lanbo Li , Xiafei Qiu , Shen Li , Zhigang Ji , Tao Xie , Yong Li , Wei Lin

Nowadays, many companies possess various types of AI accelerators, forming heterogeneous clusters. Efficiently leveraging these clusters for high-throughput large language model (LLM) inference services can significantly reduce costs and…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-04-23 Yi Xiong , Jinqi Huang , Wenjie Huang , Xuebing Yu , Entong Li , Zhixiong Ning , Jinhua Zhou , Li Zeng , Xin Chen

The computational challenges of Large Language Model (LLM) inference remain a significant barrier to their widespread deployment, especially as prompt lengths continue to increase. Due to the quadratic complexity of the attention…

Large-scale machine learning workloads increasingly rely on multi-GPU systems, yet their performance is often limited by an overlooked component: the CPU. Through a detailed study of modern large language model (LLM) inference and serving…

Hardware Architecture · Computer Science 2026-05-26 Euijun Chung , Yuxiao Jia , Aaron Jezghani , Hyesoon Kim

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…

Machine Learning · Computer Science 2023-09-13 Woosuk Kwon , Zhuohan Li , Siyuan Zhuang , Ying Sheng , Lianmin Zheng , Cody Hao Yu , Joseph E. Gonzalez , Hao Zhang , Ion Stoica

The transition from standard generative AI to \emph{reasoning-centric architectures}, exemplified by models capable of extensive Chain-of-Thought~(CoT) processing, marks a fundamental paradigm shift in system requirements. Unlike…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-05-20 Moiz Arif , Avinash Maurya , Sudharshan Vazhkudai , Bogdan Nicolae

As AI inference scales to billions of queries and emerging reasoning and agentic workflows increase token demand, reliable estimates of per-query energy use are increasingly important for capacity planning, emissions accounting, and…

Modern large language models (LLMs) increasingly rely on inference-time planning and external tools to improve reasoning. We benchmark this behavior on two real-world settings: event-centric question answering over graph-structured…

Computation and Language · Computer Science 2026-03-06 Subha Ghoshal , Ali Al-Bustami

With the rapid growth in the number of large language model (LLM) users, it is difficult for bandwidth-constrained cloud servers to simultaneously process massive LLM services in real-time. Recently, edge-cloud infrastructures have been…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-05-24 Zheming Yang , Yuanhao Yang , Chang Zhao , Qi Guo , Wenkai He , Wen Ji