Introduction
This manual provides a comprehensive guide to understanding and utilizing the General Purpose Simulation System (GPSS). It is designed for students, researchers, and professionals interested in discrete-event simulation and its practical applications. The book covers fundamental concepts, advanced modeling techniques, and practical examples to facilitate learning and application of GPSS.
GPSS is a powerful simulation language used for modeling complex systems, allowing users to analyze system behavior, identify bottlenecks, and optimize processes before physical implementation. This manual serves as your primary resource for mastering GPSS.
Getting Started
How to Use This Manual
To effectively use this manual, it is recommended to read chapters sequentially, especially for those new to simulation or GPSS. Each chapter builds upon previous concepts, introducing new features and modeling constructs progressively. Practical examples are provided throughout to illustrate theoretical concepts.
Familiarity with basic programming logic and system analysis concepts will be beneficial, though not strictly required as the book aims to be self-contained for GPSS fundamentals.
Figure 1: The front cover of the "Simulation Using GPSS" textbook, featuring the title, author Thomas J. Schriber, and a stylized flowchart graphic on a red background.
Figure 2: The spine of the book, displaying "Simulation Using GPSS" and the publisher's logo (Wiley) at the bottom.
Figure 3: The plain red back cover of the book, showing minimal details.
Core Concepts and Application
Understanding GPSS Elements
GPSS models are constructed using a set of predefined blocks, entities, and facilities. Transactions flow through these blocks, simulating the movement of items or information within a system. Key elements include:
- Transactions: Dynamic entities that move through the model, representing customers, parts, or data.
- Blocks: Static entities that perform operations on transactions, such as generating, seizing, delaying, or terminating.
- Facilities: Single-capacity servers that can be seized by one transaction at a time.
- Storages: Multi-capacity servers that can be entered by multiple transactions simultaneously, up to their capacity.
- Queues: Used to hold transactions waiting for a facility or storage.
Building Simulation Models
The process of building a GPSS model involves defining the system's components, their interactions, and the flow of transactions. This manual guides you through creating models from simple queuing systems to more complex manufacturing or service operations. Emphasis is placed on logical flow and accurate representation of real-world processes.
Figure 4: An open page from the book, displaying the title for "Chapter 2: Basic GPSS Modeling Concepts," indicating the foundational content covered early in the manual.
Figure 5: A page from the book featuring a detailed GPSS flowchart diagram, illustrating the flow of transactions through various blocks in a simulation model.
Figure 6: Another page from the manual, presenting a GPSS flowchart alongside explanatory text, demonstrating a specific simulation scenario and its block representation.
Figure 7: A page displaying a more complex GPSS model diagram, showcasing advanced block interactions and system logic.
Troubleshooting and Debugging
When developing GPSS models, errors can occur due to syntax mistakes, logical flaws, or incorrect parameter assignments. This section provides general guidance on identifying and resolving common issues:
- Syntax Errors: Carefully review block parameters and statement formats. GPSS is sensitive to correct syntax.
- Logical Errors: Trace transaction flow using debugging tools or by manually stepping through small models. Ensure that transactions are routed as intended and that resources are correctly seized and released.
- Run-time Errors: Pay attention to error messages generated by the GPSS simulator. These often point to issues like deadlocks, infinite loops, or resource contention.
- Output Analysis: If model results are unexpected, re-evaluate the input data and the assumptions made during model construction. Verify that the model accurately reflects the real-world system.
Refer to the specific GPSS software documentation for detailed debugging features and error code explanations.
Specifications
| Attribute | Detail |
|---|---|
| Publisher | Wiley |
| Publication Date | August 16, 1974 |
| Edition | 1st |
| Language | English |
| Print Length | 533 pages |
| ISBN-10 | 0471763101 |
| ISBN-13 | 978-0471763109 |
| Item Weight | 3.44 pounds |
Support and Further Information
For any inquiries regarding the content of this publication, errata, or academic use, please contact the publisher directly. While this book is a foundational text, newer editions or supplementary materials may be available from the publisher or related academic resources.
Publisher: Wiley
For general information about Wiley publications, visit their official website: www.wiley.com
This manual is intended for educational and informational purposes. The authors and publisher are not responsible for any direct or indirect damages resulting from the use or misuse of the information contained herein.
