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Introduction

MSCS 6060 – Parallel and Distributed Systems. Introduction. Parallel System. A parallel system consists of multiple processors that communicate with each other using shared memory. Distributed System. A distributed system consists of multiple processors connected by a communication network.

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Introduction

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  1. MSCS 6060 – Parallel and Distributed Systems Introduction

  2. Parallel System • A parallel system consists of multiple processors that communicate with each other using shared memory

  3. Distributed System • A distributed system consists of multiple processors connected by a communication network

  4. Parallel vs. Distributed System

  5. Software and hardware service layers in distributed systems

  6. Client Server Model

  7. A Service Provided by Multiple Servers

  8. Proxy Servers and Caches

  9. Peer to Peer Computing

  10. Mobile Agents

  11. Parallel Computing Tutorial • https://computing.llnl.gov/tutorials/parallel_comp/

  12. Advantages of Distributed Computing • Distributed applications • airline reservation, banking system • Data Sharing • distributed databases • Resource sharing • sharing expensive processor • Low cost • Availability of high bandwidth networks and low cost workstations • Reliability • Failure of single system does not affect the whole • Scalability • In parallel systems, shared memory becomes a bottleneck • Modularity and Heterogeneity • Flexible to add a new processor

  13. References • https://computing.llnl.gov/tutorials/parallel_comp/ (Parallel Computing Tutorial) • Distributed Systems: Concepts and Design; 4th Ed by G. Coulouris, J. Dollimore, T. Kindberg, Addison Wesley (ISBN 0321263545) • Concurrent and Distributed Computing in Java by Vijay K. Garg

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