网格环境中基于历史记录更新的资源查找策略  

Historical Record Update Based Resource Discovery Strategy in Grid Environment

作　　者：姜燕[1] 杨寿保[1] 韦冬[1] 郭磊涛[1] 

机构地区：[1]中国科学技术大学网络中心,合肥230026

出　　处：《计算机工程与应用》2006年第24期117-119,124,共4页Computer Engineering and Applications

基　　金：国家自然科学基金资助项目(编号:60273041);国家863高技术研究发展计划资助项目(编号:2002AA104560)

摘　　要：文章将网格中被访问结点范围的局限性所导致的问题定义为LSVN(Limitation of the Scope of Visited Nodes)问题,讨论研究了LSVN问题导致的一系列网络瓶颈和服务延时的问题,分别提出了三种基于历史记录更新的解决策略,提高网格系统的利用率和可扩展性。仿真结果表明这三种策略均有效地促进了网格系统的的可扩展性,其中“拒绝来自同一结点的过多请求”策略将网格的利用率提高了至少三倍。In this paper the ISVN （Limitation of the Scope of Visited Nodes） problem is definede as caused by the limatation of the scope of the visited node in the Grid system.A set of problems caused by the LSVN as netbottle and service delay are studied,It separately proposes three historical-record-update based strategies to solve the problem and promote Grid utilization.Simulation shows that all the strategies efficiently expand the scope of visited nodes.The ＂rejecting the excessive request from the same nodes＂ strategy improves the Grid utilization at least by three times.

关 键 词：网格 历史记录 资源查找 LSVN 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]