Optimizing Model Interoperability in Parallel Discrete Event Simulation for Cluster Environment
Yaocheng Zhang, Ge Li and Kedi Huang
Summer Computer Simulation Conference 2007 (SCSC 2007)
San Diego, California (USA), July 15-18, 2007
Abstract
Model interoperability enables independently developed models to interoperate with each other and has been a key technology in distributed simulations such as HLA-supported simulations. Parallel Discrete Event Simulation (PDES) also uses object models to represent real world entities thus it can also benefit from adopting a model interoperability mechanism. The work in this paper developed a model interoperability layer in the PDES environment by conforming to its event-object paradigm. The model interoperability layer uses a proxy-based approach to enable object models in a PDES to “publish” and “subscribe” their attributes similar to mechanisms in HLA. Especially, this design is optimized for executing in cluster-like environment. Preliminary performance tests show that the optimization improves Data Distribution Management performance up to 12 times in a cluster environment compared with unoptimized design.More importantly, the optimized design shows a much better promise with scalability which is vital to high-performance computing in a cluster environment.