Abstract:

In the future,effectively controlling power consumption becomes one of the key factors to increase the performance of highperformance computers,and we investigate whether one of the typical low power techniques,dynamic voltage scaling,can reduce energy consumption of highperformance computers effectively.In the paper we present an energy model of dynamic voltage scaling in highperformance computers,and put forward the concept of walltime energy consumption and real energy consumption.Using an intelligent power meter,we obtain the energy consumption of three computer systems in multiple voltages and frequencies,and then analyze the energy efficiency of dynamic voltage scaling in highperformance computers.As a result,we draw the conclusion that the technique of dynamic voltage scaling can reduce the energy consumption of highperformance computers effectively.

Key words: dynamic voltage scaling;low power;highperformance computer;power testing