Evaluating Scheduling and Replica Optimisation Strategies in OptorSim

Authors:
David G. Cameron;Rubén Carvajal-Schiaffino;A. Paul Millar;Caitriana Nicholson;Kurt Stockinger;Floriano Zini
Affiliations:
-;-;-;-;-;-
Venue:
GRID '03 Proceedings of the 4th International Workshop on Grid Computing
Year:
2003

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Abstract

Grid computing is fast emerging as the solution to theproblems posed by the massive computational and datahandling requirements of many current international scientificprojects. Simulation of the Grid environment is importantto evaluate the impact of potential data handlingstrategies before being deployed on the Grid. In this paper,we look at the effects of various job scheduling and datareplication strategies and compare them in a variety of Gridscenarios, evaluating several performance metrics. We usethe Grid simulator OptorSim, and base our simulations ona world-wide Grid testbed for data intensive high energyphysics experiments.Our results show that the choice of scheduling and datareplication strategies can have a large effect on both jobthroughput and the overall consumption of Grid resources.