面向实时感知性能的分布式交互仿真实体迁移技术  

Migrating Entities to Improve Real-Time Performance in Large Scale Distributed Interactive Simulations

作　　者：刘晓建[1] 钟海荣[1] 金士尧[1] 

机构地区：[1]国防科学技术大学计算机学院并行与分布处理实验室,长沙410073

出　　处：《计算机研究与发展》2004年第8期1430-1435,共6页Journal of Computer Research and Development

基　　金：国家自然科学基金资助项目 ( 60 0 73 0 0 3 ) ;武器装备预研基金项目 ( 5 14 0 ;0 2 0 2 ;0 1KG0 1)

摘　　要：分布式交互仿真中的实体需要实时感知周围的实体和环境信息 ,当仿真系统中“实体-主机”对应关系固定不变时 ,由于系统内通信关系和可用资源的动态变动 ,往往导致信息传输延迟超过QoS要求 首先提出了实体对环境的实时感知性能的评价指标 ,通过分析信息传输延迟的组成 ,得出了利用实体迁移以提高实体实时感知性能的方法 深入研究了此时实体迁移请求的提出、不同迁移请求的协调和迁移请求的处理等问题 。Real-time sensing of the environment is important for entities in a simulated world. However, in the case of fixed “simulated entity-host” relationship, entities may frequently fail to receive information needed timely due to the system's dynamic behavior. In this paper, the degree of “non-real-time sense” is first defined. After the analysis of the information transfer latency, entity migration is proposed to improve simulation's real time performance. Problems concerned, including the discovering of entities to be migrated, the coordinating of different migrating requests, and the performing of migrating, are all studied in detail. The experiment under HLA/*$RTI validates the study.

关 键 词：分布式交互仿真 实时感知 实体迁移 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]