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AN ARCHITECTURAL FRAMEWORK FOR PERFORMANCE ANALYSIS: SUPPORTING THE DESIGN, CONFIGURATION, AND CONTROL OF DIS/HLA SIMULATIONS David B. Cavitt Old Dominion University, 2000 Director: Dr. C. Michael Overstreet Technology advances are providing greater capabilities for most distributed computing environments. However, the advances in capabilities are paralleled by progressively increasing amounts of system complexity. In many instances, this complexity can lead to a lack of understanding regarding bottlenecks in run-time performance o f distributed applications. This is especially true in the domain o f distributed simulations where a myriad o f enabling technologies are used as building blocks to provide large-scale, geographically disperse, dynamic virtual worlds. Persons responsible for the design, configuration, and control o f distributed simulations need to understand the impact o f decisions made regarding the allocation and use o f the logical and physical resources that comprise a distributed simulation environment and how they effect run-time performance. Distributed Interactive Simulation (DIS) and High Level Architecture (HLA) simulation applications historically provide some of the most demanding distributed computing environments in terms o f performance, and as such have a justified need for performance information sufficient to support decision-makers trying to improve system behavior. This research addresses two fundamental questions: 1) Is there an analysis framework suitable for characterizing DIS and HLA simulation performance? and 2) what kind o f mechanism can be used to adequately monitor, measure, and collect performance data to support different performance analysis objectives for DIS and HLA simulations? This thesis presents a unified, architectural framework for DIS and HLA simulations, provides details on a performance monitoring system, and shows its effectiveness through a series o f use cases that include Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. practical applications o f the framework to support real-world U.S. Department o f Defense (DoD) programs. The thesis also discusses the robustness o f the constructed framework and its applicability to performance analysis o f more general distributed computing applications. Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. Student is copyright owner: © 2000 David B. Cavitt. All Rights Reserved. Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. This thesis is dedicated to Ellen; my wife, partner, and best friend. Her constant and tireless intention makes this thesis as much hers, as it is mine.

An Architectural Framework for Performance Analysis: Supporting the Design, Configuration, and Control of DIS /HLA Simulations