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A variety of file replication algorithms are proposed for Data Grids in the literature. Most of these algorithms ignore real-time Grid applications which are emerging in many disciplines of science and engineering today. Thus, it is important to study and improve the real-time performance of these file replication algorithms. Based on this motivation, in this study, performance of four replication algorithms, two from the literature and two new algorithms, are evaluated. For this evaluation, a process oriented and discrete-event driven simulator is developed. A detailed set of simulation studies are conducted using the simulator and the results obtained are presented to elaborate on the real-time performance of these replication algorithms.
Date of Conference: 27-29 Oct. 2008