【作者】 张卓群； 郑秀颖； 常桂然；

【Author】 ZHANG Zhuo-qun~1 ZHENG Xiu-ying~(1,2) CHANG Gui-ran~1 (1 College of Information Science and Engineering,Northeastern University,Shenyang 110004,China;2 Dept.of Information Science and Engineering,Shenyang Institute of Engineering,Shenyang 110136,China)

【机构】 东北大学信息科学与工程学院； 沈阳工程学院信息工程系；

【摘要】 资源发现是网格系统中的重要问题.面向同一应用领域的网格,因为所处理的内容相近,可以进行资源共享。P2P是分布式系统,有动态性、可伸缩性等优点。它与网格有共同的目标:共享大规模资源。随着二者的发展,网格和P2P将结合成一个兼具二者特性的新系统.本文在现有网格之上加入了一个P2P虚拟层,以实现面向同一应用领域的网格间的资源发现.以Chord和Gnutella两种模型实现该虚拟层,通过比较得出Chord在资源发现方面的性能优于Gnutella。更多还原

【Abstract】 Resource discovery is important in Grids.Resources among Grids of the same application domain can be shared as they are relevant.P2P system is a distributed system with attributes of dynamicity and scalability.P2P system has the same objective as Grid system:to share various resources. With their development,P2P and Grid will combine into a new system which has the attributes of both of them.In this paper,a P2P layer is used above the existing Grids to solve resource discovery among Grids of one application domain.Chord and Gnutella are chosen as the ideal models to implement the P2P layer. Through simulation,the results show that Chord performs better than Gnutella in resource discovery among Grids.更多还原