分布式仿真系统容错机制研究

Research of Fault-Tolerance Mechanism in Distributed Simulation System

就分布式仿真中的容错问题进行了初步的研究和分析。首先针对分布式仿真系统的特点,提出了系统分层模型,就每层中错误类型进行了分析和描述。然后构建了基于 HLA 的分布式仿真容错系统 DSFT(Distributed Simulation Fault-tolerance system),该系统主要由三部分组成:仿真资源状态监控模块、数据保存模块及错误恢复模块,文章就该系统的相应模块跟 RTI的关系进行了分析。最后,就利用网格技术来简化容错系统实现的可行性进行了初步研究。

We studied and analyzed the fault tolerance problem in distributed simulation system (DSS). First, a layered system model of DSS was put forward. Then we analyzed and described the fault types of each layer and constructed a fault-tolerance system for HLA-based DSS: Distributed Simulation Fault-tolerance system (DSFT). The system composes of three parts: simulation resource monitoring module, data preservation module, and error recovery module. The relationship between these modules and RTI was analyzed. In the end, we analyzed the feasibility of making use of grid technology to assist the realization of the system.