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In large-scale computational Grids, discovery of heterogeneous resources as a working group is crucial to achieving scalable performance. This paper presents a resource management scheme including a hierarchical cycloid overlay architecture, resource clustering and discovery algorithms for wide-area distributed Grid systems. The authors establish program/data locality by clustering resources based on their physical proximity and functional matching with user applications. They further develop dynamism-resilient resource management algorithm, cluster-token forwarding algorithm and deadline-driven resource management algorithms.
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