并行存储系统的功耗优化  

Power Optimization in Parallel Storage Systems

作　　者：董勇[1] 陈娟[1] 

机构地区：[1]国防科技大学计算机学院,湖南长沙410073

出　　处：《计算机工程与科学》2009年第11期54-57,共4页Computer Engineering & Science

基　　金：国家自然科学基金资助项目(60621003;60903044)

摘　　要：功耗问题已经成为高性能计算机系统设计的重要问题。并行存储系统是高性能计算机系统的重要组成部分,降低其功耗对于降低整个并行系统功耗具有重要意义。并行存储系统由存储结点组成,降低存储结点功耗是降低并行存储系统功耗的重要部分。本文针对存储结点的处理器提出了功耗优化方法,根据利用率信息调节处理器电压/频率,并通过元数据服务器指导的频率预调节算法缓解因调频所引发的响应时间滞后问题。分析表明,该方法可以有效降低存储结点功耗,实现并行存储系统的功耗优化。Power consumption has become a serious issue in HPC system design. Parallel storage system is one of the most important components, so optimizing its power eonsumption is signfieant for the whole system. A parallel storage system consists of some storage nodes and the optimization of the storage node＇s power consumption is the major method for parallel storage systems. This paper proposes a method for CPU power optimization. The information of CPU usage is used for DVFS in storage node. And the metadata server in parallel storage systems can be used for power management in it so as to reduce the lag which is caused by frequency scaling. The effectiveness of the method is also analyzed.

关 键 词：并行存储系统 对象存储 功耗优化 DVFS 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论]