Clairvoyant site allocation of jobs with highly variable service demands in a computational grid

In this paper we evaluate performance of three different site allocation policies in a 2-level computational grid with heterogeneous sites. We consider that schedulers are aware of service demands of jobs which show high variability. A simulation model is used to evaluate performance in terms of the average response time and slowdown, under medium and high load. Simulation results show that the proposed policy outperforms the other two that are examined, especially at high load.