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Distributed deep learning training usually adopts All-Reduce as the synchronization mechanism for data parallel algorithms due to its high performance in homogeneous environment. However, its performance is bounded by the slowest worker…

分布式、并行与集群计算 · 计算机科学 2019-09-19 Qinyi Luo , Jiaao He , Youwei Zhuo , Xuehai Qian

Distributed storage systems provide large-scale reliable data storage services by spreading redundancy across a large group of storage nodes. In such a large system, node failures take place on a regular basis. When a storage node breaks…

分布式、并行与集群计算 · 计算机科学 2016-03-17 Yan Wang , Xunrui Yin , Dongsheng Wei , Xin Wang , Yucheng He

Rate splitting (RS) is a potentially powerful and flexible technique for multi-antenna downlink transmission. In this paper, we address several technical challenges towards its practical implementation for beyond 5G systems. To this end, we…

信息论 · 计算机科学 2020-02-19 Zheng Li , Chencheng Ye , Ying Cui , Sheng Yang , Shlomo Shamai

We construct $s$-interleaved linearized Reed--Solomon (ILRS) codes and variants and propose efficient decoding schemes that can correct errors beyond the unique decoding radius in the sum-rank metric. The proposed interpolation-based scheme…

信息论 · 计算机科学 2025-09-10 Hannes Bartz , Sven Puchinger

Constructing Reed-Solomon (RS) codes that can correct insertion and deletion (ins-del) errors has been the focus of several recent studies. However, efficient decoding algorithms for such codes have received less attention and remain a…

信息论 · 计算机科学 2025-07-02 Shubhransh Singhvi

We consider practical hardware implementation of Polar decoders. To reduce latency due to the serial nature of successive cancellation (SC), existing optimizations improve parallelism with two approaches, i.e., multi-bit decision or reduced…

信息论 · 计算机科学 2018-08-07 Huazi Zhang , Jiajie Tong , Rong Li , Pengcheng Qiu , Yourui Huangfu , Chen Xu , Xianbin Wang , Jun Wang

In this paper, we show that coding can be used in storage area networks (SANs) to improve various quality of service metrics under normal SAN operating conditions, without requiring additional storage space. For our analysis, we develop a…

信息论 · 计算机科学 2013-05-30 Ulric J. Ferner , Tong Wang , Muriel Médard , Emina Soljanin

Distributed storage systems with replication are well known for storing large amount of data. A large number of replication is done in order to provide reliability. This makes the system expensive. Various methods have been proposed over…

分布式、并行与集群计算 · 计算机科学 2013-10-01 Mit Sheth , Krishna Gopal Benerjee , Manish K. Gupta

Classical erasure codes, e.g. Reed-Solomon codes, have been acknowledged as an efficient alternative to plain replication to reduce the storage overhead in reliable distributed storage systems. Yet, such codes experience high overhead…

分布式、并行与集群计算 · 计算机科学 2012-06-20 Anne-Marie Kermarrec , Erwan Le Merrer , Gilles Straub , Alexandre van Kempen

Fault-tolerant distributed applications require mechanisms to recover data lost via a process failure. On modern cluster systems it is typically impractical to request replacement resources after such a failure. Therefore, applications have…

分布式、并行与集群计算 · 计算机科学 2023-01-26 Lukas Hübner , Demian Hespe , Peter Sanders , Alexandros Stamatakis

Today's massively-sized datasets have made it necessary to often perform computations on them in a distributed manner. In principle, a computational task is divided into subtasks which are distributed over a cluster operated by a…

信息论 · 计算机科学 2017-06-20 Wael Halbawi , Navid Azizan-Ruhi , Fariborz Salehi , Babak Hassibi

Existing large language model (LLM) serving systems fall into two categories: 1) a unified system where prefill phase and decode phase are co-located on the same GPU, sharing the unified computational resource and storage, and 2) a…

计算与语言 · 计算机科学 2025-04-29 Ke Hong , Lufang Chen , Zhong Wang , Xiuhong Li , Qiuli Mao , Jianping Ma , Chao Xiong , Guanyu Wu , Buhe Han , Guohao Dai , Yun Liang , Yu Wang

The sum-rank metric is the mixture of the Hamming and rank metrics. The sum-rank metric found its application in network coding, locally repairable codes, space-time coding, and quantum-resistant cryptography. Linearized Reed-Solomon (LRS)…

信息论 · 计算机科学 2026-02-10 Kuo Shang , Chen Yuan , Ruiqi Zhu

In this paper we provide a detailed description of Reed-Solomon (RS) codes, the most important algorithms for decoding them, and their use in concatenated coding systems for space applications. In the current literature there is scattered…

信息论 · 计算机科学 2016-08-16 Polykarpos Thomadakis , Antonios Argyriou

Motivated by applications in storage systems and property testing, we study data stream algorithms for local testing and tolerant testing of codes. Ideally, we would like to know whether there exist asymptotically good codes that can be…

信息论 · 计算机科学 2010-04-27 Atri Rudra , Steve Uurtamo

Straggler nodes are well-known bottlenecks of distributed matrix computations which induce reductions in computation/communication speeds. A common strategy for mitigating such stragglers is to incorporate Reed-Solomon based MDS (maximum…

信息论 · 计算机科学 2023-08-24 Anindya Bijoy Das , Aditya Ramamoorthy , David J. Love , Christopher G. Brinton

High-level synthesis (HLS) allows hardware designers to create hardware designs with high-level programming languages like C/C++/OpenCL, which greatly improves hardware design productivity. However, existing HLS flows require programmers'…

硬件体系结构 · 计算机科学 2024-10-11 Haocheng Xu , Haotian Hu , Sitao Huang

We address the use of maximum distance separable (MDS) codes for distributed storage (DS) to enable efficient content delivery in wireless networks. Content is stored in a number of the mobile devices and can be retrieved from them using…

信息论 · 计算机科学 2016-08-30 Amina Piemontese , Alexandre Graell i Amat

Distributed storage systems suffer from significant repair traffic generated due to frequent storage node failures. This paper shows that properly designed low-density parity-check (LDPC) codes can substantially reduce the amount of…

分布式、并行与集群计算 · 计算机科学 2017-10-17 Hyegyeong Park , Dongwon Lee , Jaekyun Moon

Distributed storage plays a crucial role in the current cloud computing framework. After the theoretical bound for distributed storage was derived by the pioneer work of the regenerating code, Reed-Solomon code based regenerating codes were…

密码学与安全 · 计算机科学 2015-10-06 Jian Li , Tongtong Li , Jian Ren