A Task Selection Based Power-aware Scheduling Algorithm for Applying DVS

Abstract

Recently, power consumption of server computers is one of the most important topics. Although DVS (Dynamic Voltage Scaling) can reduce power consumption, this method is only used at idle time or low load computation time, generally. In this paper, we propose a task scheduling algorithm for reducing power consumption especially at high load computation time. DVS is applied to tasks that are not in critical path, which can reduce more power consumption by introducing a task selection mechanism without increasing the makespan of task graphs. Experimental results show that our algorithm can reduce about 9.1\% and 12.8\% of power consumption on 4 and 8 processors respectively on average in comparison with the existing method.