基于网格的离散事件仿真服务设计

Services Design for Discrete Event Simulation over Grids

传统的离散事件仿真系统,一般基于DEVS(DiscreteEventSystemSpecification)理论构建,不涉及网络资源的管理问题,因而不能适应现代大规模仿真应用对计算和资源管理的需求。而网格计算具有整合分布式异构资源的能力,可以为这类仿真提供强大的计算和资源管理支持。因此,提出利用网格技术来设计离散事件仿真服务的思想,仿真服务透明地向用户提供仿真运行支持。首先结合典型的DEVS仿真应用开发过程,提出一种基于网格的仿真体系结构。然后,探讨了仿真任务管理、网格仿真代理、运行控制和实验代理等几类核心的仿真服务。

Based on DEVS （Discrete Event System Specification） theory, the traditional systems for discrete event simulation do not concern network resource management issues. These traditional systems can＇t meet the computational and resources management needs of current large-scale simulation application, So more M＆S（Modeling ＆ Simulation） applications are turning to Grid computing（Abbr, as “Grids”）, Grids have the ability to assemble diverse, geographically distributed resources, and they can provide tremendous computational and resource management capabilities for discrete event simulation. Therefore, an architecture is presented to build simulation services based on the Grids, These simulation services transparently provide services to clients. And then, a set of core components of simulation services are investigated, including simulation tasks management, Grid simulation agent, execution controller, experiment agent. Lastly, the current and future work of Grid-based simulation are introduced,