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Issue No.08 - August (2011 vol.22)
pp: 1374-1381
Young Choon Lee , University of Sydney, Sydney
Albert Y. Zomaya , University of Sydney, Sydney
Traditionally, the primary performance goal of computer systems has focused on reducing the execution time of applications while increasing throughput. This performance goal has been mostly achieved by the development of high-density computer systems. As witnessed recently, these systems provide very powerful processing capability and capacity. They often consist of tens or hundreds of thousands of processors and other resource-hungry devices. The energy consumption of these systems has become a major concern. In this paper, we address the problem of scheduling precedence-constrained parallel applications on multiprocessor computer systems and present two energy-conscious scheduling algorithms using dynamic voltage scaling (DVS). A number of recent commodity processors are capable of DVS, which enables processors to operate at different voltage supply levels at the expense of sacrificing clock frequencies. In the context of scheduling, this multiple voltage facility implies that there is a trade-off between the quality of schedules and energy consumption. To effectively balance these two performance goals, we have devised a novel objective function and a variant from that. The main difference between the two algorithms is in their measurement of energy consumption. The extensive comparative evaluations conducted as part of this work show that the performance of our algorithms is very compelling in terms of both application completion time and energy consumption.
Computer systems organization, energy-aware systems, scheduling and task partitioning, simulation of multiprocessor systems, multicomputer systems, performance of systems.
Young Choon Lee, Albert Y. Zomaya, "Energy Conscious Scheduling for Distributed Computing Systems under Different Operating Conditions", IEEE Transactions on Parallel & Distributed Systems, vol.22, no. 8, pp. 1374-1381, August 2011, doi:10.1109/TPDS.2010.208
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