Design and Implementation of Power Control Programming Interface

High performance cluster need to consume lots of power. High power consumption is an important factor that restricts the development of system in both technical and economic ways. The power control technology has become a hot issue in the area of high performance computing systems and data center management. For different programs, reducing power consumption can exert different influence on performance. In order to minimize the losses of performance, adjustments of power consumption should be made based on the characteristics of programs. This paper aims at solving the problem of power control of nodes in high performance computing system. PCPI (Power Control Programming Interface) is designed to acquire real-time power consumption state and to provide function of dynamic power consumption control, so as to make effective power adjustments according to the operating characteristics of programs. In this way, power consumption can be reduced while the losses of performance are minimized.