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3 edition of Verification of fault-tolerant clock synchronization systems found in the catalog.

Verification of fault-tolerant clock synchronization systems

Verification of fault-tolerant clock synchronization systems

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  • 32 Currently reading

Published by National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, National Technical Information Service, distributor] in [Washington, DC], [Springfield, Va .
Written in English

    Subjects:
  • Fault-tolerant computing.

  • Edition Notes

    Other titlesVerification of fault tolerant clock ....
    StatementPaul S. Miner.
    SeriesNASA technical paper -- 3349.
    ContributionsUnited States. National Aeronautics and Space Administration. Scientific and Technical Information Program.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18063982M

    Fault-Tolerant Clock Synchronization T T E 1 5 8 8 1 5 8 8 E t h T T E T T E T T E E t h T T E T T E T T E T T E T T E T T E T T E Formal Verification of Clock Synchronization Algorithm • First time by means of Model Checking (sal-inf-bmc) Mixed-Criticality Systems • European Communities FP7 (FP7/) project no. Briefing Slides. Network Time Protocl (NTP) General Overview PostScript | PowerPoint | PDF; NTP Achitecture, Protocol And Algorithms PostScript | PowerPoint | PDF. Importance of the Problem. Accurate, reliable time synchronization among the computers sharing a data network is vital for such things as file archive systems, cryptographic key management and real-time .

    Chapter 2 is a high-level survey of some aspects of distributed systems, including definitions, message passing and communicating sequential processes (CSP), and event ordering using logical clocks. Again, the book lacks cohesion since, while CSP is an attractive model, none of the algorithms in the following chapters are written in it. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): This paper presents a new fault-tolerant clock synchronization algorithm designed for the Controller Area Network (CAN). The algorithm provides all correct processes of the system with a global timebase, despite the occurrence of faults in the network or in a minority of processes.

    Qnamic Fault-Tolerant Clock Synchronization protocol here.) The crucial point is that since we do not use averaging, it is not necessary that the majority of processors be correct. Moreover, our algorithm requires the transmission of at most n 2 messages per synchronization (where n is the total number of processors in the system). Fault tolerance is the property that enables a system to continue operating properly in the event of the failure of (or one or more faults within) some of its components. If its operating quality decreases at all, the decrease is proportional to the severity of the failure, as compared to a naively designed system, in which even a small failure can cause total breakdown.


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Verification of fault-tolerant clock synchronization systems Download PDF EPUB FB2

Provide Byzantine fault-tolerant clock synchronization. This paper explores the utility of Shankar's mechanization of Schneider's theory for the verification of clock synchronization systems. In tile course of this work, some limitations of Shankar's mechanically verified the-ory were Size: 4MB.

Get this from a library. Verification of fault-tolerant clock synchronization systems. [Paul S Miner; United States.

National Aeronautics and Space Administration. Scientific and Technical Information Program.]. formal verification Download formal verification or read online books in PDF, EPUB, Tuebl, and Mobi Format.

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Existing fault-tolerant clock synchronization algorithms are compared and contrasted. These include the following: software synchronization algorithms, such as convergence-averaging, convergence-nonaveraging, and consistency algorithms, as well as probabilistic synchronization; hardware synchronization algorithms; and hybrid by: Abstract.

Clock synchronization algorithms play a crucial role in a variety of fault-tolerant distributed architectures. Although those algorithms are similar in their basic structure, the particular designs differ considerably, for instance in the way clock adjustments are by:   Schneider [Sch87] generalizes a number of protocols for Byzantine fault-tolerant clock synchronization and presents a uniform proof for their correctness.

We present a mechanical verification of Schneider's protocol leading Cited by: claims of a rapid Byzantine-fault-tolerant self-stabilizing protocol for distributed clock synchronization systems [9, 10]. In particular, this effort encompasses the verification of correctness of a simplified model of the protocol by confirming that a candidate system self-stabilizes from anyCited by: A Byzantine-Fault-Tolerant Self-Stabilizing Protocol for Distributed Clock Synchronization Systems was reported in [Mal B].

Claims about the. Rationale for and use of fault-tolerant clock synchronization 3. A short history on the development of fault-tolerant clock synchronization 4.

Fault-tolerant clock synchronization and how it may be of benefit to IEEE ASFile Size: KB. NASA NASA-TP Technical Paper September Validation of a Fault,Tolerant Clock Synchronization System Ricky W. Butler and Sally C.

Johnson fUIA. designs that incorporate fault tolerant clock synchronization in order to achieve ultra-reliable assurance levels. Many efficient clock synchronization protocols do not, however, address Byzantine failures, and most protocols that do tolerate Byzantine failures do not self-stabilize.

Of the Byzantine self-stabilizingCited by: Mechanical Verification of a Generalized Protocol for Byzantine Fault Tolerant Clock Synchronization by Dr. Natarajan Shankar. Lecture Notes in Computer Science, Volume From Formal Techniques in Real-Time and Fault-Tolerant Systems.

Edited by J. Vytopil. Springer-Verlag, Nijmegen, The Netherlands. January, Pages – Abstract. This paper presents the mechanical verification of a simplified model of a rapid byzantine-fault-tolerant self-stabilizing protocol for distributed clock synchronization systems.

This protocol does not rely on any assumptions about the initial state of the system except for the presence of sufficient good nodes, thus making the weakest possible assumptions and producing the.

Comprehensive and self-contained, this book organizes that body of knowledge with a focus on fault tolerance in distributed systems. (The uniprocess case is treated as a special case of distributed systems.) KEY TOPICS: Treats fault tolerant distributed systems as consisting of levels of abstraction, providing different tolerant by: This book presents state-of-the-art research results in the area of formal methods for real-time and fault-tolerant systems.

The papers consider problems and solutions in safety-critical system design and examine how wellthe use of formal techniques Price: $ e If synchronization is mission critical BMCA may provide insufficient fault tolerance a A number of transient and permanent failures remain undetected e Extensive monitoring is crucial a Monitoring systems using out-of-band techniques e Combination of more than 1 PTP Masters a Can be accomplished within the IEEE standard a Can cope with File Size: 1MB.

Schneider [I] demonstrates that many faull-tolerant clock synchronization algorithms can be represented as refinements of a single proven correct paradigm. Shankar [2] provides a mechanical proof (using EHD_I [3]) that Schneider's schema, achieves Byzantine fault-tolerant clock synchronization provided that eleven constraints are Size: 2MB.

This book presents state-of-the-art research results in the area of formal methods for real-time and fault-tolerant systems. The papers consider problems and solutions in safety-critical system design and examine how wellthe use of formal techniques for design, analysis and verification serves in relating theory to practical realities.

Fault-Tolerant External Clock Synchronization Flaviu Cristian and Christof Fetzer Department of Computer Science & Engineering University of California, San Diego La Jolla, CA * E-Mail: {flaviu, cfetzer}@ Abstract We address the problem of how to integrate fault- tolerant internal and external clock synchronization.

An optimal internal clock synchronization algorithm. In Proceedings of the 10th Annual IEEE Conference on Computer Assurance (COMPASS), pages –, June Clock Synchronization in Distributed Systems Zbigniew Jerzak. Fault-Tolerant Computing --Concepts and Examples / D. A. Rennels --Fault-Tolerant Computing: Fundamental Concepts / V.

P. Nelson --Definition and Analysis of Hardware- and Software-Fault-Tolerant Architectures / J.-C. Laprie, J.

Arlat, C. Beounes and K. Kanoun --Understanding Fault-Tolerant Distributed Systems / F. Cristian --A Design Approach.Microelectron. Reliab., Vol.

34, No. 2, pp./+ Printed in Great Britain. Pergamon Press Ltd A NEW HARDWARE-BASED FAULT-TOLERANT CLOCK SYNCHRONIZATION SCHEME FOR REAL-TIME MULTIPROCESSOR SYSTEMS YUNJU BAEK, HEUNG-KYU LEE and KIYEOL RYU Department of Computer Science, Korea Cited by: 1.clock synchronization algorithm.

Unfortunately, some of its features also make the implementation of a fault-tolerant clock synchronization service a non-trivial task. Our algo-rithm addresses both the positive and the negative aspects of CAN. 1. Introduction The availability of a global timebase in all correct pro.