'Synchronous systems' presentation slideshows

Faults and fault-tolerance

One of the selling points of a distributed system is that the system will continue to perform (at some level) even if some components / processes / links fail. Faults and fault-tolerance. Cause and effect. Study examples of what causes what .

732 views • 57 slides

95-702 Distributed Systems

455 views • 45 slides

Faults and fault-tolerance

One of the selling points of a distributed system is that the system will continue to perform (at some level) even if some components / processes / links fail. Faults and fault-tolerance. Cause and effect. Study examples of what causes what .

677 views • 43 slides

Distributed Consensus (continued)

Distributed Consensus (continued). Byzantine Generals Problem Solution with signed message. A signed message satisfies all the conditions of oral message, plus two extra conditions Signature cannot be forged. Forged message are detected and discarded by loyal generals.

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Computer Science 425 Distributed Systems (Fall 2009)

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Synchronization of Networks and Applications: a Survey

Synchronization of Networks and Applications: a Survey. Raffaele Noro - ICA Institute for computer Communications and Applications noro@epfl.ch icawww.epfl.ch. Outline. Part I - Synchronization features of communication systems Introduction general and technical aspects of synchronization

430 views • 32 slides

Asynchronous Distance Education and the World Wide Web

Asynchronous Distance Education and the World Wide Web. Why Online Distance Ed?. Improved access to I_______ 9,300 ISPs in 120 countries 30M+ regular Internet users in U.S. Additional 55M considering Internet 70M Internet users worldwide Changing __________

448 views • 30 slides

Advances in Designing Clockless Digital Systems

Advances in Designing Clockless Digital Systems. Prof. Steven M. Nowick nowick@cs.columbia.edu. Department of Computer Science Columbia University New York, NY, USA. Introduction. Synchronous vs. Asynchronous Systems? Synchronous Systems: use a global clock

416 views • 29 slides

Advances in Clockless and Mixed-Timing Digital Systems

Advances in Clockless and Mixed-Timing Digital Systems. Prof. Steven M. Nowick Email: nowick@cs.columbia.edu Department of Computer Science Columbia University. OUTLINE. I. Asynchronous & Mixed-Timing Design: Overview & Recent Developments

374 views • 28 slides

PERSPECTIVES ON THE CAP THEOREM

PERSPECTIVES ON THE CAP THEOREM. Seth Gilbert, National U of Singapore Nancy A. Lynch, MIT. Paper highlights. The CAP theorem as a negative result Cannot have Consistency + Availability + Partition Tolerance Tradeoffs between safety and liveness in unreliable systems

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Flip-Flops

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Algorithms for Extracting Timeliness Graphs

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A Formalism for Stochastic Decision Processes with Asynchronous Events

A Formalism for Stochastic Decision Processes with Asynchronous Events. Introduction. Asynchronous processes are abundant in the real world Telephone system, computer network, etc. Discrete-time and semi-Markov models are inappropriate for systems with asynchronous events

348 views • 19 slides

Metastable States

Metastable States. Metastability - Introduction. Can occur if the setup (t SU ), hold time (t H ), or clock pulse width (t PW ) of a flip-flop is not met. A problem for asynchronous systems or events. Can be a problem in synchronous systems. Three possible symptoms: Increased CLK -> Q delay.

287 views • 13 slides

The Kahn Principle for Networks of Endochronous Programs

The Kahn Principle for Networks of Endochronous Programs. Dumitru Potop-Butucaru IRISA, France. Outline. Introduction Motivation Endo/Isochrony Endochronous systems The Kahn principle Proof outline Conclusion. Future work. Introduction. Synchronous systems, composition

111 views • 11 slides

Basics of Asynchronous Logic

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Process

Is there a violation of causal ordering? (A) yes (B) no . Process. A. B. A. P1. Protocol. B. B. A. P2. order B,1. Order A, 2. P3. Is there a violation of causal ordering? (A) yes (B) no . Process. A. B. A. B. P1. Protocol. B. A. P2. order B,1. Order A, 2. P3.

148 views • 4 slides