| The Grid technology that emerges since mid 1990s is always on the people's focus. Its aim is to provide the sharability between multiple dynamic virtual organizations. Though the ultimate target of the Grid is great and excited, the phase of its development lays in the theoretic, standard and basic-infrastructure, which could be represented by the Globus project that provides a number of middle-ware to Grid infrastructure. Be similar in the ultimate target to the Grid, peer-to-peer technology gets great achievements in the application area, which uses plenty of desktop resources that having direct concern with normal users.This thesis attempts to get rid of the yoke of the traditional Grid's reliance to the High-Performance-Computers environment and make use of the desktop resources in the Grid, making them not only the client peer of the Grid, making the peer-to-peer network resources a part of the whole Grid resources. And migrate it to the simulating technology.This paper's work contain the following aspects: Firstly, gives a research on the Grid architecture and models of peer-to-peer network, mainly on the advantage of the SOA(Service Oriented Architecture) and the problem of the P2P Grid models.Secondly, provides a P2P-Grid model which is peer-to-peer organized, containing multi-level SuperNodes, constructing on the Grid infrastructure. And give a particular explanation on the model's advantages.Thirdly, give a research about the connectivity problems of the model on the point of resource discovery, and refer several improvement measures to Grid infrastructure. Combined to analyzing and contrasting, have a most optimized selection to the model on the topology, router algorithm, resource finding mechanism. We use the cash method, and raise a new concept of VND(Virtual-organization Name Directory) that enhance the discovery of VOs. Finally, we use the above to a design of a simulating instance, and give an analysis of the experimental results. |
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