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An Evaluation of Some DAME Use CAse Scenarios

10,000 3,000

Topic Description

Summary
This project is set out to evaluate the physical performance (time, cost etc.) of some DAME
scenarios on the White Rose Grid environment and provides recommendations to DAME
engineers involved in these scenarios, regarding how to optimise performance.
Experiments designed to model DAME scenarios were executed on a Grid simulator
(GridSim), the results gathered were analysed in the light of making performance
recommendations.

Table of Contents
1. Introduction 1
1.1 Project Aim 1
1.2 Problem Statement 2
1.3 Project Scope 2
1.4 Project Objectives 2
1.5 Minimum Requirements 3
1.6 Further Enhancements 3
1.7 Project Limitations 3
1.8 Project Deliverables 4
1.9 Relevance to Degree Program 4
1.10 Project Management 4
2. Background Research 5
2.1 Understanding the Grid 5
2.1.1 Introduction – Grid Overview 5
2.1.2 Grid Architecture 6
2.1.3 Grid Middleware 8
2.1.4 Grid as a Virtual Organisation 9
2.1.5 White Rose Grid (WRG) 9
2.2 Understanding Grid Applications 11
2.2.1 Introduction – Application Overview 11
2.2.2 Grid Application 12
2.2.3 DAME 12
2.2.4 DAME Use Cases 14
2.3 Understanding Simulation 15
2.3.1 Introduction – Simulation overview 15
iv
2.3.2 Available Simulators 15
2.3.3 GridSim 16
3. Simulation Design 17
3.1 Introduction 17
3.2 Experiments 17
3.2.1 Simulation 1 17
3.2.2 Simulation 2 18
3.2.3 Simulation 3 19
3.3 Designing Simulations with GridSim 21
3.3.1 Grid packages 21
3.3.2 GridSim Limitations 22
3.4 Setting up Simulation Programs 22
3.4.1 Introduction 22
3.4.2 Simulation Performance Metrics 23
3.4.3 Designing Simulation Scripts 23
3.5 Summary 26
4. Performance Results 27
4.1 Introduction 27
4.2 Simulation 1: Data Storage 27
4.3 Simulation 2: Simple Diagnosis 33
4.4 Simulation 3: Interoperability in VOs 39
4.5 Summary 43
5. Evaluation 44
5.1 Evaluation 44
5.2 GridSim Simulations 44
5.3 Experiment Design 45
5.4 Project Scope 46
5.5 Project Methodology and Evaluation Criteria 47
v
5.6 Result Validity 47
5.7 Project Management – Planning and Practise 48
5.8 Project Evaluation 48
5.9 Summary 49
6. Conclusion 50
6.1 Summary 50
6.2 Further Work 50
References 52
Appendix A – Project Schedule 56
Appendix B – Personal Reflection 58
Appendix C – Further Experimentation 60
Appendix D – GridSim Broker Algorithms 61
Appendix E – GridSim Scripts 63
Appendix F – Experiments’ Parameters 69
Appendix G – Experiments’ Results summary 72
Appendix H – GridSim Report 75
Appendix I – GridSim Runtime Exception

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