CS3551_Distributed_Computingunit1 pptsho

DC - CS3551 UNIT I INTRODUCTION
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Introduction: Definition-Relation to Computer System Components – Motivation – Message -
Passing Systems versus Shared Memory Systems – Primitives for Distributed
Communication – Synchronous versus Asynchronous Executions – Design Issues and
Challenges; A Model of Distributed Computations: A Distributed Program – A Model of
Distributed Executions – Models of Communication Networks – Global State of a Distributed
System.

1. CS3551 – Distributed Computing Unit I: Introduction Prepared by: Your Name Department / College

2. Introduction • Definition of Distributed Computing • Relation to Computer System Components • Real-world examples: Google, Amazon, Banking systems

3. Motivation • Scalability • Reliability and fault tolerance • Resource sharing • Performance

4. Communication Models • Message Passing Systems: Direct exchange (MPI, sockets) • Shared Memory Systems: Shared variables (OpenMP, multicore processors)

5. Primitives for Distributed Communication • Send / Receive operations • Remote Procedure Calls (RPC) • Remote Method Invocation (RMI)

6. Execution Models • Synchronous Execution: Predictable, ordered • Asynchronous Execution: Independent, unpredictable • Pros & Cons of each

7. Design Issues & Challenges • Transparency (access, location, replication, concurrency, fault tolerance) • Security • Scalability • Resource management

8. Models of Distributed Computations • Distributed Program model • Distributed Execution model • Communication Network models

9. Global State of a Distributed System • Concept of a 'snapshot' • Consistency of global state • Use in checkpointing & recovery

10. Conclusion • Recap of key concepts • Importance in modern computing • Transition to next unit