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This paper studies the fundamental problem of data persistency for a general family of redundancy schemes in distributed storage systems, called replicated erasure codes. Namely, we analyze two strategies of replicated erasure codes…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-07-28 Roy Friedman , Rafał Kapelko , Karol Marchwicki

In the realm of shared memory systems, the challenge of reader-writer synchronization is closely coupled with the potential for readers to access outdated updates. Read-Copy-Update (RCU) is a synchronization primitive that allows for…

Information Theory · Computer Science 2024-02-13 Vishakha Ramani , Jiachen Chen , Roy D. Yates

We investigate a decentralised approach to committing transactions in a replicated database, under partial replication. Previous protocols either re-execute transactions entirely and/or compute a total order of transactions. In contrast,…

Databases · Computer Science 2009-09-29 Pierre Sutra , Marc Shapiro

In this paper, we revisit the communication vs. distributed computing trade-off, studied within the framework of MapReduce in [1]. An implicit assumption in the aforementioned work is that each server performs all possible computations on…

Information Theory · Computer Science 2017-05-26 Yahya H. Ezzeldin , Mohammed Karmoose , Christina Fragouli

A consistency/latency tradeoff arises as soon as a distributed storage system replicates data. For low latency, modern storage systems often settle for weak consistency conditions, which provide little, or even worse, no guarantee for data…

Distributed, Parallel, and Cluster Computing · Computer Science 2015-07-16 Hengfeng Wei , Yu Huang , Jiannong Cao , Jian Lu

We prove that no fully transactional system can provide fast read transactions (including read-only ones that are considered the most frequent in practice). Specifically, to achieve fast read transactions, the system has to give up support…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-04-11 Diego Didona , Panagiota Fatourou , Rachid Guerraoui , Jingjing Wang , Willy Zwaenepoel

Distributed computing systems implement redundancy to reduce the job completion time and variability. Despite a large body of work about computing redundancy, the analytical performance evaluation of redundancy techniques in queuing systems…

Information Theory · Computer Science 2022-01-05 Amir Behrouzi-Far , Emina Soljanin

Distributed algorithms that operate in the fail-recovery model rely on the state stored in stable memory to guarantee the irreversibility of operations even in the presence of failures. The performance of these algorithms lean heavily on…

Operating Systems · Computer Science 2020-02-19 William B. Mingardi , Gustavo M. D. Vieira

Simultaneous or streaming machine translation generates translation while reading the input stream. These systems face a quality/latency trade-off, aiming to achieve high translation quality similar to non-streaming models with minimal…

Computation and Language · Computer Science 2025-03-31 Zeeshan Ahmed , Frank Seide , Zhe Liu , Rastislav Rabatin , Jachym Kolar , Niko Moritz , Ruiming Xie , Simone Merello , Christian Fuegen

Pairwise dot product-based attention allows Transformers to exchange information between tokens in an input-dependent way, and is key to their success across diverse applications in language and vision. However, a typical Transformer model…

Replicating or caching popular content in memories distributed across the network is a technique to reduce peak network loads. Conventionally, the performance gain of caching was thought to result from making part of the requested data…

Information Theory · Computer Science 2015-01-13 Ajaykrishnan N. , Navya S. Prem , Vinod M. Prabhakaran , Rahul Vaze

There are significant benefits to serve deep learning models from relational databases. First, features extracted from databases do not need to be transferred to any decoupled deep learning systems for inferences, and thus the system…

Databases · Computer Science 2022-10-24 Lixi Zhou , Jiaqing Chen , Amitabh Das , Hong Min , Lei Yu , Ming Zhao , Jia Zou

Knowledge-intensive tasks such as question answering often require assimilating information from different sections of large inputs such as books or article collections. We propose ReadTwice, a simple and effective technique that combines…

Computation and Language · Computer Science 2021-05-13 Yury Zemlyanskiy , Joshua Ainslie , Michiel de Jong , Philip Pham , Ilya Eckstein , Fei Sha

In this paper we study how coding in distributed storage reduces expected download time, in addition to providing reliability against disk failures. The expected download time is reduced because when a content file is encoded to add…

Distributed, Parallel, and Cluster Computing · Computer Science 2016-03-07 Gauri Joshi , Yanpei Liu , Emina Soljanin

This paper presents a comprehensive analysis of performance trade offs between implementation choices for transaction runtime systems on persistent memory. We compare three implementations of transaction runtimes: undo logging, redo…

Distributed, Parallel, and Cluster Computing · Computer Science 2018-04-04 Virendra Marathe , Achin Mishra , Amee Trivedi , Yihe Huang , Faisal Zaghloul , Sanidhya Kashyap , Margo Seltzer , Tim Harris , Steve Byan , Bill Bridge , Dave Dice

Redundancy for straggler mitigation, originally in data download and more recently in distributed computing context, has been shown to be effective both in theory and practice. Analysis of systems with redundancy has drawn significant…

Performance · Computer Science 2017-10-03 Mehmet Fatih Aktas , Pei Peng , Emina Soljanin

Remote Direct Memory Access (RDMA) is becoming widely available in data centers. This technology allows a process to directly read and write the memory of a remote host, with a mechanism to control access permissions. In this paper, we…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-02-26 Marcos K. Aguilera , Naama Ben-David , Rachid Guerraoui , Virendra Marathe , Igor Zablotchi

It has been proved that to implement a linearizable shared memory in synchronous message-passing systems it is necessary to wait for a time proportional to the uncertainty in the latency of the network for both read and write operations,…

Distributed, Parallel, and Cluster Computing · Computer Science 2016-08-01 Matthieu Perrin , Matoula Petrolia , Achour Mostefaoui , Claude Jard

In this paper, we analyze the performance of random load resampling and migration strategies in parallel server systems. Clients initially attach to an arbitrary server, but may switch server independently at random instants of time in an…

Networking and Internet Architecture · Computer Science 2010-04-12 A. Ganesh , S. Lilienthal , D. Manjunath , A. Proutiere , F. Simatos

A practical large language model (LLM) service may involve a long system prompt, which specifies the instructions, examples, and knowledge documents of the task and is reused across requests. However, the long system prompt causes…

Computation and Language · Computer Science 2024-05-31 Lei Zhu , Xinjiang Wang , Wayne Zhang , Rynson W. H. Lau