'Asynchronous systems' diaporamas de présentation

Data and Computer Communications

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The STATEMATE Semantics of Statecharts D. Harel and A. Naamand

The STATEMATE Semantics of Statecharts D. Harel and A. Naamand. Ahmad Alsawi 1-4 Bob Chen 5-8 Dapeng Xie 9-11. Introduction to STATEMATE. STATEMATE is a system Statechart is a language (executable semantics) Initial version 10 years ago

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Chapter 5: Specification

Chapter 5: Specification. Yuanfang Cai CS751 Jan 29, 2003. Overview. Definition 5.1 The Uses of Specification 5.2 Specification Qualities 5.3 Classification of Specification Styles 5.4 Verification of Specification 5.5 Operational Specifications 5.6 Descriptive Specifications

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Lecture IX: Coordination And Agreement

Lecture IX: Coordination And Agreement. CMPT 401 2008 Dr. Alexandra Fedorova. A Replicated Service. servers. client. network. slave. W. R. master. W. R. W. slave. client. data replication. write. read. W. W. R. A Need For Coordination And Agreement. servers. client.

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Dependability and real-time

Dependability and real-time. If a system is to produce results within time constraints, it needs to produce results at all! How to justify and measure how well computer systems meet their targets in presence of faults?. Dependable systems. How do things go wrong and why?

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Lecture XI: Distributed Transactions

Lecture XI: Distributed Transactions. CMPT 401 Summer 2007 Dr. Alexandra Fedorova. A Distributed Transaction. A transaction is distributed across n processes. Each process can decide to commit or abort the transaction A transaction must commit on all sites or abort on all sites.

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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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Distributed Systems II TDA297(CTH), INN290 (GU)

Distributed Systems II TDA297(CTH), INN290 (GU). LP3 2010 7.5 hec http://www.cse.chalmers.se/edu/course/TDA297 http://www.cse.chalmers.se/edu/course/INN290. The Teachers. Instructor: Philippas Tsigas E-mail: tsigas@chalmers.se Phone: +46-31-772 5409 Office: 5106

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Self-Tuned Distributed Multiprocessor System

Self-Tuned Distributed Multiprocessor System. Xiaoyan Bi CSC8410 - Operating Systems Dr. Mirela Damian. Motivation.

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Clockless Logic

Clockless Logic. System-Level Specification and Synthesis Ack: Tiberiu Chelcea. passive port. active port. O1 . O2. req. ack. Asynchronous Communication Protocols: Control. Communication protocol: 4-phase handshake O1 initiates communication O2 completes communication

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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.

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