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More About This Textbook
Overview
2251A-0
The comprehensive guide to HLA, the worldwide standard for simulation components!
If you want to succeed in the new worldwide market for plug-in simulation components, Creating Computer Simulation Systems will show you how. This is the only comprehensive guide to the High Level Architecture (HLA), the new global standard for creating component-based computer models and simulations. HLA was recently adopted by the field's #1 customer, the United States Department of Defense-but it will be equally exciting for commercial applications, even including gaming.
In this book, recognized leaders of the HLA community present detailed coverage for decision-makers, software engineers, architects, and project managers alike. Coverage includes:
The accompanying website contains a complete implementation of the HLA Runtime Infrastructure for Windows compatible and other computers, as well as "Test Federate" software you can use to invoke HLA services without coding.
Whether you're a manager, developer, or integrator, HLA will drive the next revolution in simulation-and this book can help you play a leading role.
Editorial Reviews
Booknews
Explains how High Level Architecture can be used to combine several models or simulations into an integrated system with minimal change needed for the components, for example combining simulations of various manufacturing machines and of conveyors into a simulation of the complete factory floor. Not an extensive reference, but a tutorial with optional exercises for practicing or student engineers. The CD- ROM contains a complete implementation of the Runtime Infrastructure. Annotation c. Book News, Inc., Portland, OR booknews.comProduct Details
Related Subjects
Meet the Author
DR. FREDERICK KUHL is a Senior Principal Engineer with the MITRE Corporation who currently leads the international HLA standardization effort.
DR. JUDITH DAHMANN has been Chief Scientist for the Defense Modeling and Simulation Office of the United States Department of Defense since 1995.
DR. RICHARD WEATHERLY is the Chief Engineer of the MITRE Corporation's Information Systems and Technology Division, where he leads the HLA infrastructure development and verification team.
Read an Excerpt
Suppose you have several computer simulations that you wish to combine to create a single simulation system. For example, you have simulations of various manufacturing machines and simulations of conveyors. You desire to create a simulation of a complete factory floor while minimizing the changes needed to the existing simulations. Or perhaps you have a simulation of air traffic controllers in a region and another simulation of civil aircraft. You wish to create a complete simulation of air traffic in your region, and you expect you'll need to add a simulation of military air traffic later. The High Level Architecture for modeling and simulation, or HLA, is the glue you need to combine existing simulations and accommodate new ones.
The HLA is a software architecture for creating computer models or simulations out of component models or simulations. The HLA has been adopted by the United States Department of Defense (DoD) for use by all its modeling and simulation activities. The HLA is also increasingly finding civilian application. This book is a comprehensive introduction to the HLA.
"High Level Architecture" might seem an ambitious name. When the name was adopted by the DoD, the context was a variety of military simulation programs with little in common and little that could be reused. The HLA was the "high level" architecture from the perspective of the simulation programs of the time. While the HLA contains much that is generic to distributed computer systems, its intended application is to modeling and simulation.
Audience
This book will be useful to you if you are one of the following:
If you are an integrator or developer, we expect you are an experienced programmer. You'll get the most out of the book if you can run and modify the software presented in the text, but most of the discussion of the HLA is designed to be independent of the code samples. Furthermore, we have provided tools that will allow you to experiment with the HLA without writing software.
Scope and Contents
The book consists of text and a CD-ROM. The text contains tutorial material and exercises with the HLA. The tutorial material can be read without the exercises. The two are differentiated visually, to make it easy to skip the exercises. The CD-ROM contains reference documents, software, and installation instructions.
What This Book Covers
The text of the book beyond the Preface is divided into the following chapters:
This book aims to be a tutorial, rather than an exhaustive reference. The index will make this book useful as a reference as well, but our main aim is to guide you in applying the HLA in the most common circumstances.
Contents of the CD-ROM
The CD-ROM contains the HLA specification (all three parts), software, installation instructions, and programming notes. You can find installation instructions and other documentation by starting with the file index.html in the top directory of the CD-ROM. Software includes the following:
- An implementation of the HLA Runtime Infrastructure (RTI) suitable for use with the sample code. This implementation, called the Pitch Portable RTI (pRTITM) Exploration Edition, is from Pitch AB of Linköping, Sweden Pitch 1999a. The pRTI Exploration Edition implements the entire HLA Interface Specification but is limited in capacity. An unlimited version is available Pitch 1999b.
- A "Test Federate," software that can be used to invoke the various HLA services manually. You can use the Test Federate to explore the HLA without writing any software yourself MITRE 1999.
- A complete implementation of the simulation system developed in the tutorial, included as Java source code and as executable files MITRE 1999.
How to Read This BookRegardless of your interest, you should go through the rest of this preface and Chapter 1, "Introduction," thereby furnishing yourself with terms and definitions you will need for the other parts of the book.
Table of Contents
1. Introduction.
Why a High Level Architecture for Modeling and Simulation. An HLA Federation Has Software and Data Components. The HLA As a Standard. You Can Run Your Own Federation.
2. The Story Behind the HLA.
Introduction. How the HLA Got Started. The Model of Technology Transition. Technology Development. Product Development. Customer Transition. Why Does HLA Progress When Other (Equally) Good Ideas Have Not?
3. An Overview of the HLA.
Introduction. The HLA Defines a Software Architecture. The HLA Offers Services in Six Areas. Summary.
4. The Sushi Restaurant Federation.
Building a Federation: Beginning an Example. Federation Management: Defining the Federation. The Federation Object Model: A Common Description of the World. Overview of Sharing Data. Sharing Data: More Details. Ownership: Responsibility and Cooperation in Modeling an Entity. Summary.
5. Synchronizing the Federation.
Building a Federation: More on the Example. Time Management: Everything in Order. Federation Execution Lifecycle: Coordinating Independent Federates. Requirements Creep Sets In: the Demo Returns. Summary.
6. A Sample Implementation.
Introduction. Exactly What Is Implemented. Running the Sample Implementation. Types Common to All Federates. Structure of the Production Federate. The Transport Federate. The Consumption Federate. The Manager Federate. The Viewer Federate.
7. Extending the Federation for a New Purpose.
Using the Federation for a New Purpose. Summary.
8. Advanced Topics.
Introduction. Zero Lookahead. Approach to Time Management for Optimistic Federates. Save and Restore. Data Distribution Management (DDM). More on How to Use the MOM.
Appendix References and Accompanying Website.
Index.
Preface
Preface
Guidance to the Reader
Suppose you have several computer simulations that you wish to combine to create a single simulation system. For example, you have simulations of various manufacturing machines and simulations of conveyors. You desire to create a simulation of a complete factory floor while minimizing the changes needed to the existing simulations. Or perhaps you have a simulation of air traffic controllers in a region and another simulation of civil aircraft. You wish to create a complete simulation of air traffic in your region, and you expect you'll need to add a simulation of military air traffic later. The High Level Architecture for modeling and simulation, or HLA, is the glue you need to combine existing simulations and accommodate new ones.
The HLA is a software architecture for creating computer models or simulations out of component models or simulations. The HLA has been adopted by the United States Department of Defense (DoD) for use by all its modeling and simulation activities. The HLA is also increasingly finding civilian application. This book is a comprehensive introduction to the HLA.
"High Level Architecture" might seem an ambitious name. When the name was adopted by the DoD, the context was a variety of military simulation programs with little in common and little that could be reused. The HLA was the "high level" architecture from the perspective of the simulation programs of the time. While the HLA contains much that is generic to distributed computer systems, its intended application is to modeling and simulation.
Audience
This book will be useful to you if you are one of the following:
If you are an integrator or developer, we expect you are an experienced programmer. You'll get the most out of the book if you can run and modify the software presented in the text, but most of the discussion of the HLA is designed to be independent of the code samples. Furthermore, we have provided tools that will allow you to experiment with the HLA without writing software.
Scope and Contents
The book consists of text and a CD-ROM. The text contains tutorial material and exercises with the HLA. The tutorial material can be read without the exercises. The two are differentiated visually, to make it easy to skip the exercises. The CD-ROM contains reference documents, software, and installation instructions.
What This Book Covers
The text of the book beyond the Preface is divided into the following chapters:
This book aims to be a tutorial, rather than an exhaustive reference. The index will make this book useful as a reference as well, but our main aim is to guide you in applying the HLA in the most common circumstances.
Contents of the CD-ROM
The CD-ROM contains the HLA specification (all three parts), software, installation instructions, and programming notes. You can find installation instructions and other documentation by starting with the file index.html in the top directory of the CD-ROM. Software includes the following:
How to Read This Book
Regardless of your interest, you should go through the rest of this preface and Chapter 1, "Introduction," thereby furnishing yourself with terms and definitions you will need for the other parts of the book.