Multifacetted modelling and discrete event simulation
Multifacetted modelling and discrete event simulation
Parallel DEVS: a parallel, hierarchical, modular modeling formalism and its distributed simulator
Transactions of the Society for Computer Simulation International
Transactions of the Society for Computer Simulation International
ISITC '07 Proceedings of the 2007 International Symposium on Information Technology Convergence
Programmed Graph Rewriting with Time for Simulation-Based Design
ICMT '08 Proceedings of the 1st international conference on Theory and Practice of Model Transformations
DS-RT '08 Proceedings of the 2008 12th IEEE/ACM International Symposium on Distributed Simulation and Real-Time Applications
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Distributed, discrete-event simulators are typically deployed on different computing and network platforms using different implementation languages. This hampers realistic performance comparisons between simulator implementations. Furthermore, algorithms used are typically only present in code rather than explicitly modeled. This prohibits rigorous analysis and re-use. In this paper, the structure and behavior of a distributed simulator for the DEVS formalism is modeled explicitly, in the DEVS formalism. Simulation of this model of the simulator allows for the quantitative analysis of reliability and performance of different alternative simulator designs. In particular, using a model of a distributed simulator allows one to simulate scenarios such as failures of computational and network resources, which can be hard to realize in reality. We demonstrate our model-based approach by modeling, simulating and ultimately synthesizing a distributed DEVS simulator. Our goal is to achieve fault tolerance whilst optimizing performance.