Concept

Circuit asynchrone

Publications associées (159)

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Worst Case Burstiness Increase due to FIFO Multiplexing

Jean-Yves Le Boudec, Juan Echagüe

We consider a FIFO multiplexer fed by flows that are individually constrained by arrival curves, and look for the best possible arrival curve for every output flow. This problem arises in scenarios where aggregate multiplexing is performed, such as differe ...

2002

Dispositif électronique à affichage électro-optique commandé par des circuits logiques programmables

Daniel Mange, Christof Teuscher

NOVELTY - The electronic display (2) includes a number of cells (12) whose upper faces form a display surface, each cell has an electro-optic display unit (6) with inputs (14) for data to be displayed. A programmable logic circuit (20) is associated with f ...

2001

Genuine atomic multicast in asynchronous distributed systems

Rachid Guerraoui, André Schiper

This paper addresses the problem of atomic multicasting messages in asynchronous distributed systems. Firstly, we give a characterization of the notion of ``genuine atomic multicast''. This characterization leads to a better understanding of the difference ...

2001

Asynchronous Leasing

Rachid Guerraoui, Partha Dutta, Romain Boichat

Leasing is a very effective way to improve the performance of distributed algorithms without hampering their fault-tolerance. The notion of lease has traditionally been defined using a global notion of time and was hence strongly tied to synchronous system ...

2001

Open Consensus

Rachid Guerraoui, Romain Boichat

This paper presents the abstraction of open consensus and argues for its use as an effective component for building reliable agreement protocols in practical asynchronous systems where processes and links can crash and recover. The specification of open co ...

2001

Optically programmable gate array

Demetri Psaltis

The Optically Programmable Gate Array (OPGA), an optical version of a conventional FPGA, benefits from a direct parallel interface between an optical memory and a logic circuit. The OPGA utilizes a holographic memory accessed by an array of VCSELs to progr ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2000

Making Consensus Practical

Rachid Guerraoui, Romain Boichat

This paper presents the abstraction of lazy consensus and argues for its use as an effective component for building distributed agreement protocols in practical asynchronous systems where processes and links can crash and recover. Lazy consensus looks like ...

2000

Synchronous System and Perfect Failure Detector: solvability and efficiency issues

Rachid Guerraoui, André Schiper

Keywords: distributed systems, fault-tolerance, consensus, efficiency, synchronous system, asynchronous system, failure detector. We compare, in terms of solvability and efficiency, the synchronous model, noted S_S, with the asynchronous model augmented wi ...

IEEE Computer Society2000

Optical memory for computing and information processing

Demetri Psaltis, Wei Liu

The high data transfer rate achievable in page-oriented optical memories demands for parallel interfaces to logic circuits able to process efficiently the data. The Optically Programmable Gate Array, an enhanced version of a conventional FPGA, utilizes a h ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa1999

Consensus in Asynchronous Distributed Systems: A Concise Guided Tour

Rachid Guerraoui, André Schiper

It is now recognized that the Consensus problem is a fundamental problem when one has to design and implement reliable asynchronous distributed systems. This chapter is on the Consensus problem. It studies Consensus in two failure models, namely, the Crash ...

Springer1999