Advanced programming in the UNIX environment
Advanced programming in the UNIX environment
Hard Real-Time Computing Systems: Predictable Scheduling Algorithms and Applications
Hard Real-Time Computing Systems: Predictable Scheduling Algorithms and Applications
Theory of Modeling and Simulation
Theory of Modeling and Simulation
Computer Architecture: A Quantitative Approach
Computer Architecture: A Quantitative Approach
Cheddar: a flexible real time scheduling framework
Proceedings of the 2004 annual ACM SIGAda international conference on Ada: The engineering of correct and reliable software for real-time & distributed systems using Ada and related technologies
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In today's aircraft, system complexity increases are making it particularly challenging for engineers to validate systems architectures. To ease this burden, the integration test rig, often known as the "iron bird" integration simulator, has been developed, and allows testing of real systems in a simulated environment. The computing host platform and interface equipment used in the integration simulator, are evolving rapidly. The capability to predict the performance of both the simulation application and the infrastructure on which it runs, is crucial in order to select the proper architecture for the future test rigs. This paper presents the results of an AADL development that simulates the test rig simulator in order to predict its needs. We illustrate the use of model based engineering techniques on a real industrial application where we simulate the simulator in order to architect its computing infrastructure. Firstly, the simulation application model built with AADL language is presented. Secondly, the producer-consumer paradigm is introduced and it is shown how it is used to model the simulation infrastructure host platform. Thirdly, the time reference used to abstract time in the simulation is presented. And finally the capacity of the AADL simulation to match the simulators currently used in our company is illustrated.