Research and Simulation on Grid Resources Location

In the grid environment, resources are distributed, heterogeneous, dynamical and autonomous. Resource discovery takes a part of a bridge between resource requester and resource provider. Its primary function is to devise effective location strategy and find the optimal resource combination to meet the demands of users. In this paper, on the premise of the Layered Resource Discovery Model (LRDM), a layered resource location strategy was proposed, mainly including two parts: local location and global location. At last, the location strategy was simulated by using OPNET in order to demonstrate the feasibility and effectiveness of the proposed strategy.