Synchronizations and Rollbacks in Optimistic Distributed Simulation Scheme
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Abstract:
This paper describes a study of coordination issues in optimistic distributed simulations that are implemented over a loosely coupled environment. Detailed study of relations among the factors such as the number, the depth and the frequency of rollbacks, the event intensity, and the speedup of the distributed simulations are studied. This study shows that centralized coordination can perform very effectively in certain types of simulation tasks; the rollbacks have different characteristics at different event intensities; and how the overall performance of optimistic distributed simulations is affected by message intensity, communications overhead, and rollback frequency. Key words: parallel and distributed simulation, discrete event simulation, synchronization 1
