Download or read book Fault Tolerance in Distributed Systems with Synchronized Clocks written by Tong Zhang and published by . This book was released on 2002 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Clock synchronization in distributed systems a comparison written by Harald Bachner and published by GRIN Verlag. This book was released on 2007-03-01 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bachelor Thesis from the year 2007 in the subject Computer Science - Technical Computer Science, grade: 1,0, University of Applied Sciences Technikum Vienna (Informations- und Kommunikationssysteme), language: English, abstract: Clock synchronization is a necessary and critical part in most distributed systems. For many years NTP was the state-of-the-art way of synchronizing computer clocks distributed in space. However, as recent advances in miniaturization lead to the construction of smaller, more powerful and less power consuming computers, embedded devices, sensors and actuators, the need for more precise time synchronization grew. This work thus sets out to compare selected approaches to clock synchronization in distributed systems. The well known Global Positioning System is disseminating accurate time and frequency information from the International Institutes that keep the time, NTP can still do the same, but at different levels of accuracy as well as cost. Clock synchronization protocols like IEEE1588 or TTP and bus architectures like FlexRay evolved from the need to further propagate the timing information within small networks and therefore staying within the specified limits of preciseness.
Download or read book Fault Tolerance in Distributed Systems written by Pankaj Jalote and published by Prentice Hall. This book was released on 1994 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fault tolerance is an approach by which reliability of a computer system can be increased beyond what can be achieved by traditional methods. Comprehensive and self-contained, this book explores the information available on software supported fault tolerance techniques, with a focus on fault tolerance in distributed systems.
Download or read book Fault tolerant Clock Synchronization in Distributed Systems with Low Topological Requirements written by Zoha Moztarzadeh and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Clock Synchronization in Distributed Systems a Comparison written by Harald Bachner and published by GRIN Verlag. This book was released on 2007-07-26 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bachelor Thesis from the year 2007 in the subject Computer Science - Technical Computer Science, grade: 1,0, University of Applied Sciences Technikum Vienna (Informations- und Kommunikationssysteme), 29 entries in the bibliography, language: English, abstract: Clock synchronization is a necessary and critical part in most distributed systems. For many years NTP was the state-of-the-art way of synchronizing computer clocks distributed in space. However, as recent advances in miniaturization lead to the construction of smaller, more powerful and less power consuming computers, embedded devices, sensors and actuators, the need for more precise time synchronization grew. This work thus sets out to compare selected approaches to clock synchronization in distributed systems. The well known Global Positioning System is disseminating accurate time and frequency information from the International Institutes that keep the time, NTP can still do the same, but at different levels of accuracy as well as cost. Clock synchronization protocols like IEEE1588 or TTP and bus architectures like FlexRay evolved from the need to further propagate the timing information within small networks and therefore staying within the specified limits of preciseness.
Download or read book A Byzantine Fault Tolerant Self Stabilizing Protocol for Distributed Clock Synchronization Systems written by National Aeronaut Administration (Nasa) and published by . This book was released on 2020-08-05 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Embedded distributed systems have become an integral part of safety-critical computing applications, necessitating system 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-stabilizing clock synchronization algorithms that exist in the literature, they are based on either unjustifiably strong assumptions about initial synchrony of the nodes or on the existence of a common pulse at the nodes. The Byzantine self-stabilizing clock synchronization protocol presented here does not rely on any assumptions about the initial state of the clocks. Furthermore, there is neither a central clock nor an externally generated pulse system. The proposed protocol converges deterministically, is scalable, and self-stabilizes in a short amount of time. The convergence time is linear with respect to the self-stabilization period. Proofs of the correctness of the protocol as well as the results of formal verification efforts are reported. Malekpour, Mahyar R. Langley Research Center NASA/TM-2006-214322, L-19262 WBS 457280.02.07.07 CLOCKS; SYNCHRONISM; PROVING; FAULT TOLERANCE; CONVERGENCE; EMBEDDING; ALGORITHMS; SAFETY; PROTOCOL (COMPUTERS); PROGRAM VERIFICATION (COMPUTERS); FAILURE
Download or read book Global States and Time in Distributed Systems written by T. Anthony Marsland and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 1994 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Selected papers on global states and time in distributed systems. Among the topics: synchronizing clocks in the presence of faults, Internet time synchronization, and virtual time and global state in distributed systems. Includes an annotated bibliography of principal associated works. No index. Ann
Download or read book Experimental Analysis of Clock Synchronization Protocols for Fault tolerant Distributed Systems written by Raghukul Tilak and published by . This book was released on 2001 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fault Tolerant Parallel and Distributed Systems written by Dimiter R. Avresky and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most important use of computing in the future will be in the context of the global "digital convergence" where everything becomes digital and every thing is inter-networked. The application will be dominated by storage, search, retrieval, analysis, exchange and updating of information in a wide variety of forms. Heavy demands will be placed on systems by many simultaneous re quests. And, fundamentally, all this shall be delivered at much higher levels of dependability, integrity and security. Increasingly, large parallel computing systems and networks are providing unique challenges to industry and academia in dependable computing, espe cially because of the higher failure rates intrinsic to these systems. The chal lenge in the last part of this decade is to build a systems that is both inexpensive and highly available. A machine cluster built of commodity hardware parts, with each node run ning an OS instance and a set of applications extended to be fault resilient can satisfy the new stringent high-availability requirements. The focus of this book is to present recent techniques and methods for im plementing fault-tolerant parallel and distributed computing systems. Section I, Fault-Tolerant Protocols, considers basic techniques for achieving fault-tolerance in communication protocols for distributed systems, including synchronous and asynchronous group communication, static total causal order ing protocols, and fail-aware datagram service that supports communications by time.
Download or read book A Byzantine Fault Tolerant Self Stabilizing Protocol for Distributed Clock Synchronization Systems written by Nasa Technical Reports Server (Ntrs) and published by BiblioGov. This book was released on 2013-07 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Embedded distributed systems have become an integral part of safety-critical computing applications, necessitating system 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-stabilizing clock synchronization algorithms that exist in the literature, they are based on either unjustifiably strong assumptions about initial synchrony of the nodes or on the existence of a common pulse at the nodes. The Byzantine self-stabilizing clock synchronization protocol presented here does not rely on any assumptions about the initial state of the clocks. Furthermore, there is neither a central clock nor an externally generated pulse system. The proposed protocol converges deterministically, is scalable, and self-stabilizes in a short amount of time. The convergence time is linear with respect to the self-stabilization period. Proofs of the correctness of the protocol as well as the results of formal verification efforts are reported.
Download or read book A Survey of Provably Correct Fault tolerant Clock Synchronization Techniques written by and published by . This book was released on 1988 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tools and Algorithms for the Construction and Analysis of Systems written by C.R. Ramakrishnan and published by Springer Science & Business Media. This book was released on 2008-03-18 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 14th International Conference on Tools and Algorithms for the Construction and Analysis of Systems, TACAS 2008, held in Budapest, Hungary, in March/April 2008 as part of ETAPS 2008, the European Joint Conferences on Theory and Practice of Software. The 31 revised full research papers and 7 revised tool demonstration papers presented together with the abstract of an invited paper were carefully reviewed and selected from a total of 140 submissions. The papers are organized in topical sections on parameterized systems, model checking, applications, static analysis, concurrent/distributed systems, symbolic execution, abstraction, interpolation, trust, and reputation.
Download or read book Principles of Distributed Systems written by Eduardo Tovar and published by Springer. This book was released on 2008-04-12 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 11th International Conference on Principles of Distributed Systems, OPODIS 2007, held in Guadeloupe, French West Indies, in December 2007. The 32 revised full papers presented were carefully reviewed and selected from 106 submissions. The papers address all current issues in theory, specification, design and implementation of distributed and embedded systems. A broad range of topics are addressed.
Download or read book Advances in Ultra dependable Distributed Systems written by Neeraj Suri and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 1995 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fault Tolerant Parallel and Distributed Systems written by Dimiter R. Avresky and published by Springer. This book was released on 1998-01-31 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides researchers and application developers insight into issues and challenges of building inexpensive, accessible, and dependable systems for the envisioned convergence of all computing into storing, searching, retrieving, and exchanging information in a myriad of forms on internetworks. Includes discussions of fault tolerance in communications protocols, including synchronous and asynchronous group communication; methods and approaches for achieving fault-tolerance in such distributed systems as a network of workstations, dependable cluster systems, and local area multiprocessors based on scalable coherent interfaces; general models and features of safety- critical systems built from commercial off-the-shelf components; the real-time processing of video signals, and embedding in faulty systems. Annotation copyrighted by Book News, Inc., Portland, OR
Download or read book Principles of Distributed Systems written by Marina Papatriantafilou and published by Springer. This book was released on 2004-07-28 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 7th International Conference on Principles of Distributed Systems (OPODIS2003) was held during December 10-13, 2003 at La Martinique, French West Indies, and was co-organized by the Universitþ edes Antille set del a Guyane, La Martinique, French West Indies and by Chalmers University of Technology, Sweden. It continued a tradition of successful conferences with friendly and pleasant atmospheres. The earlier organizations of OPODIS were held in Luzarches (1997), Amiens (1998), Hanoi (1999), Paris (2000), Mexico (2001) and Reims (2002). OPODIS is an open forum for the exchange of state-of-the-art knowledge on distributed computing and systems among researchers from around the world. Following the tradition of the previous organizations, its program is composed of high-quality contributed and invited papers by experts of international caliber in this scientific area. The topics of interest are theory, specifications, design and implementation of distributed systems, including distributed and multiprocessor algorithms; communication and synchronization protocols; coordination and consistency protocols; stabilization, reliability and fault-tolerance of distributed systems; performance analysis of distributed algorithms and systems; specification and verification of distributed systems; security issues in distributed computing and systems; and applications of distributed computing, such as embedded distributed systems, real-time distributed systems, distributed collaborative environments, peer-to-peer systems, cluster and grid computing.
Download or read book A Verified Design of a Fault Tolerant Clock Synchronization Circuit written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-17 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Schneider demonstrates that many fault tolerant clock synchronization algorithms can be represented as refinements of a single proven correct paradigm. Shankar provides mechanical proof that Schneider's schema achieves Byzantine fault tolerant clock synchronization provided that 11 constraints are satisfied. Some of the constraints are assumptions about physical properties of the system and cannot be established formally. Proofs are given that the fault tolerant midpoint convergence function satisfies three of the constraints. A hardware design is presented, implementing the fault tolerant midpoint function, which is shown to satisfy the remaining constraints. The synchronization circuit will recover completely from transient faults provided the maximum fault assumption is not violated. The initialization protocol for the circuit also provides a recovery mechanism from total system failure caused by correlated transient faults. Miner, Paul S. Langley Research Center ALGORITHMS; CIRCUITS; CLOCKS; FAULT TOLERANCE; SYNCHRONISM; CONVERGENCE; PROTOCOL (COMPUTERS); PROVING; SYSTEM FAILURES...
