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In the landscape of High-Performance Computing (HPC), the quest for efficient and scalable memory solutions remains paramount. The advent of Compute Express Link (CXL) introduces a promising avenue with its potential to function as a…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-08-22 Yehonatan Fridman , Suprasad Mutalik Desai , Navneet Singh , Thomas Willhalm , Gal Oren

Linux containers have gained high popularity in recent times. This popularity is significantly due to various advantages of containers over Virtual Machines (VM). The containers are lightweight, occupy lesser storage, have fast boot-up…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-09-21 Akshay Dhumal , Dharanipragada Janakiram

With the advent of byte-addressable memory devices, such as CXL memory, persistent memory, and storage-class memory, tiered memory systems have become a reality. Page migration is the de facto method within operating systems for managing…

Operating Systems · Computer Science 2024-06-19 Lingfeng Xiang , Zhen Lin , Weishu Deng , Hui Lu , Jia Rao , Yifan Yuan , Ren Wang

Large Language Models (LLMs) are powerful but incur high memory and computation costs. Quantization is an effective solution, with INT weights and FP activations being widely adopted to preserve accuracy. Prior works further reduce FP…

Hardware Architecture · Computer Science 2026-02-24 Xinyu Wang , Jieyu Li , Yanan Sun , Weifeng He

The rise of LLMs has driven demand for private serverless deployments, characterized by moderate-sized models and infrequent requests. While existing serverless solutions follow exclusive GPU allocation, we take a step back to explore…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-12-16 Chuhao Xu , Zijun Li , Quan Chen , Han Zhao , Xueyan Tang , Minyi Guo

Efficient parallelization of Large Language Models (LLMs) with long sequences is essential but challenging due to their significant computational and memory demands, particularly stemming from communication bottlenecks in attention…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-12-31 Zongwu Wang , Fangxin Liu , Mingshuai Li , Li Jiang

While Compute Express Link (CXL) enables support for cache-coherent shared memory among multiple nodes, it also introduces new types of failures--processes can fail before data does, or data might fail before a process does. The lack of a…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-07-18 Yi Xu , Suyash Mahar , Ziheng Liu , Mingyao Shen , Steven Swanson

Persistent Memory (PM) introduces new opportunities for designing crash-consistent applications without the traditional storage overheads. However, ensuring crash consistency in PM demands intricate knowledge of CPU, cache, and memory…

Emerging Technologies · Computer Science 2025-04-25 João Oliveira , João Gonçalves , Miguel Matos

Finetuning large language models (LLMs) is essential for task adaptation, yet today's serving stacks isolate inference and finetuning on separate GPU clusters -- wasting resources and under-utilizing hardware. We introduce FlexLLM, the…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-10-27 Gabriele Oliaro , Xupeng Miao , Xinhao Cheng , Vineeth Kada , Mengdi Wu , Ruohan Gao , Yingyi Huang , Remi Delacourt , April Yang , Yingcheng Wang , Colin Unger , Zhihao Jia

High-Performance Computing (HPC) and Artificial Intelligence (AI) workloads typically demand substantial memory bandwidth and, to a degree, memory capacity. CXL memory expansion modules, also known as CXL "type-3" devices, enable…

Operating Systems · Computer Science 2024-12-18 Rohit Sehgal , Vishal Tanna , Vinicius Petrucci , Anil Godbole

The advent of Compute Express Link (CXL) enables SSDs to participate in the memory hierarchy as large-capacity, byte-addressable memory devices. These CXL-enabled SSDs (CXL-SSDs) offer a promising new tier between DRAM and traditional…

Hardware Architecture · Computer Science 2025-08-18 Hyunsun Chung , Junhyeok Park , Taewan Noh , Seonghoon Ahn , Kihwan Kim , Ming Zhao , Youngjae Kim

Common resource management methods in supercomputing systems usually include hard divisions, capping, and quota allotment. Those methods, despite their 'advantages', have some known serious disadvantages including unoptimized utilization of…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-02-26 Kfir Zvi , Gal Oren

IoT applications increasingly rely on on-device AI accelerators to ensure high performance, especially in low-connectivity and safety-critical scenarios. However, the limited on-chip memory of these accelerators forces inference runtimes to…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-05-13 Nathan Ng , Walid A. Hanafy , Prashanthi Kadambi , Balachandra Sunil , Ayush Gupta , David Irwin , Yogesh Simmhan , Prashant Shenoy

Emerging interconnects, such as CXL and NVLink, have been integrated into the intra-host topology to scale more accelerators and facilitate efficient communication between them, such as GPUs. To keep pace with the accelerator's growing…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-01-19 Xu Zhang , Ke Liu , Yisong Chang , Ke Zhang , Mingyu Chen

Tensor parallelism (TP) enables large language models (LLMs) to scale inference efficiently across multiple GPUs, but its tight coupling makes systems fragile: a single GPU failure can halt execution, trigger costly KVCache recomputation,…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-11-19 Ziyi Xu , Zhiqiang Xie , Swapnil Gandhi , Christos Kozyrakis

Distributed storage employs replication to mask failures and improve availability. However, these systems typically exhibit a hard tradeoff between consistency and performance. Ensuring consistency introduces coordination overhead, and as a…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-04-22 Hang Zhu , Zhihao Bai , Jialin Li , Ellis Michael , Dan Ports , Ion Stoica , Xin Jin

Large model inference is shifting from cloud to edge due to concerns about the privacy of user interaction data. However, edge devices often struggle with limited computing power, memory, and bandwidth, requiring collaboration across…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-10-02 Zonghang Li , Wenjiao Feng , Mohsen Guizani , Hongfang Yu

While historically, economists have been primarily occupied with analyzing the behaviour of the markets, electronic trading gave rise to a new class of unprecedented problems associated with market fairness, transparency and manipulation.…

Cryptography and Security · Computer Science 2019-10-02 Vasilios Mavroudis , Hayden Melton

A heterogeneous memory has a single address space with fast access to some addresses (a fast tier of DRAM) and slow access to other addresses (a capacity tier of CXL-attached memory or NVM). A tiered memory system aims to maximize the…

Emerging Technologies · Computer Science 2025-10-28 Rohan Kadekodi , Haoran Peng , Gilbert Bernstein , Michael D. Ernst , Baris Kasikci

The Compute Express Link (CXL) interconnect enables compute "pods" that pool memory across servers to reduce cost and improve efficiency. These pods also facilitate pairwise communication whose needs conflict with pooling. Importantly,…

Hardware Architecture · Computer Science 2026-04-06 Yuhong Zhong , Fiodar Kazhamiaka , Pantea Zardoshti , Shuwei Teng , Rodrigo Fonseca , Mark D. Hill , Daniel S. Berger