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Rachid Guerraoui

Related publications (428)

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The Failure Detector Abstraction

Rachid Guerraoui

A failure detector is a fundamental abstraction in distributed computing. This paper surveys this abstraction through two dimensions. First we study failure detectors as building blocks to simplify the design of reliable distributed algorithms. In particul ...

2011

Brief Announcement: Transaction Polymorphism

Rachid Guerraoui, Vincent Gramoli

In this work, we present transaction polymorphism; a synchronization technique that provides more control to the programmer than traditional (i.e., monomorphic) transactions to achieve comparable performance to generic lock-based and lock-free solutions. ...

Acm Order Department, P O Box 64145, Baltimore, Md 21264 Usa2011

Collaborative Personalized Top-k Processing

Rachid Guerraoui, Anne-Marie Kermarrec

This article presents P4Q, a fully decentralized gossip-based protocol to personalize query processing in social tagging systems. P4Q dynamically associates each user with social acquaintances sharing similar tagging behaviors. Queries are gossiped among s ...

Association for Computing Machinery2011

Generalized Universality

Rachid Guerraoui

State machine replication reduces distributed to centralized computing. Any sequential service, modeled by a state machine, can be replicated over any number of processes and made highly available to all of them. At the heart of this fundamental reduction ...

Springer Berlin Heidelberg2011

Scalable and Secure Aggregation in Distributed Networks

Rachid Guerraoui, Anne-Marie Kermarrec, Hamza Harkous, Florian Huc

We consider the problem of computing an aggregation function in a \emph{secure} and \emph{scalable} way. Whereas previous distributed solutions with similar security guarantees have a communication cost of

O(n^3)

, we present a distributed protocol that r ...

CoRR2011

The disagreement power of an adversary

Rachid Guerraoui

At the heart of distributed computing lies the fundamental result that the level of agreement that can be obtained in an asynchronous shared memory model where t processes can crash is exactly t + 1. In other words, an adversary that can crash any subset o ...

2011

The impossibility of boosting distributed service resilience

Rachid Guerraoui

We study f -resilient services, which are guaranteed to operate as long as no more than f of the associated processes fail. We prove three theorems asserting the impossibility of boosting the resilience of such services. Our ﬁrst theorem allows any connect ...

Elsevier2011

Leveraging Parallel Nesting in Transactional Memory

Rachid Guerraoui, Michal Kapalka, Aleksandar Dragojevic

Exploiting the emerging reality of affordable multi-core architectures goes through providing programmers with simple abstractions that would enable them to easily turn their sequential programs into concurrent ones that expose as much parallelism as possi ...

ACM2010

Composing Relaxed Transactions

Rachid Guerraoui, Vincent Gramoli, Mihai Letia

As the classical transactional abstraction is sometimes considered too restrictive in leveraging parallelism, a lot of work has been devoted to devising relaxed transactional models with the goal of improving concurrency. Nevertheless, the quest for improv ...

2010

The VELOX Transactional Memory Stack

Rachid Guerraoui, Vincent Gramoli, Michal Kapalka, Aleksandar Dragojevic, Pascal Felber

The adoption of multi- and many-core architectures for mainstream computing undoubtedly brings profound changes in the way software is developed. In particular, the use of fine grained locking as the multi-core programmer’s coordination methodology is cons ...

Institute of Electrical and Electronics Engineers2010

Scalable and Secure Aggregation in Distributed Networks

Rachid Guerraoui, Anne-Marie Kermarrec, Hamza Harkous, Florian Huc

O(n^3)

, we present a distributed protocol that r ...

CoRR2011