%0 Journal Article
%T A Fault-Tolerant Scheduling Algorithm for Heterogeneous Distributed Real-Time Simulation Systems<br>异构分布式实时仿真系统的容错调度算法
%A LIU Yun-Sheng
%A ZHANG Tong
%A ZHANG Chuan-Fu
%A ZHA Ya-Bing
%A <br>刘云生
%A 张童
%A 张传富
%A 查亚兵
%J 软件学报
%D 2006
%I 
%X Heterogeneous distributed real-time simulation system is a special kind of real-time system. This paper solves its fault-tolerant problem based on the CSP (checkpoint-based spare processor) model, which is an improvement of the traditional SP (spare processor) model with checkpoint mechanism. Firstly, two propositions are put forward based on the characters of simulation system. Secondly, the Worst Case Response Time of the simulation tasks are analyzed based on Markov chains and the schedulability analysis rules for simulation task are presented. In the end of the paper, a fault-tolerant scheduling algorithm CSP-RTFT is proposed and simulated. The results show that the algorithm can achieve better stability, higher task accept ratio than SP-RTFT which is based on SP model, whereas the resource utilization ratio is lower than those based on PB model.
%K heterogeneous distributed simulation system
%K fault tolerance
%K real-time scheduling
%K Markov chain
%K worst case response time<br>异构分布式仿真系统
%K 容错
%K 实时调度
%K Markov链
%K 最坏反应时间
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=7735F413D429542E610B3D6AC0D5EC59&aid=3FFE3B53E48B1FA2&yid=37904DC365DD7266&vid=BCA2697F357F2001&iid=F3090AE9B60B7ED1&sid=2D8A2D26AFF207D2&eid=3EC3A91609DDCF9A&journal_id=1000-9825&journal_name=软件学报&referenced_num=0&reference_num=21