Xeon Phi协处理器的功耗特征测量与分析  

Power Consumption Characteristics Measurement and Analysis of Xeon Phi Coprocessor

作　　者：宋庆增[1] 吕华阳 赵雷[1] 王江峰[1] 

机构地区：[1]天津工业大学计算机科学与软件学院,天津300387

出　　处：《计算机工程》2017年第6期313-321,共9页Computer Engineering

基　　金：天津市高等学校科技发展基金(20130806);高等学校博士学科点专项科研基金(20131201110002)

摘　　要：精确测量和分析Xeon Phi协处理器的功耗特征是实现协处理器功耗管理和优化的基本前提,但准确提取和分析运行在Xeon Phi上并行程序的功耗较为复杂。为此,采用特制的功耗测量设备,完整提取14路供电通道的实时电压和电流,通过计算获得协处理器实时功耗,并在实测数据的基础上分别分析Xeon Phi协处理器启动、空闲、线程和存储系统等的功耗特征。实验结果表明,该功耗模型为功耗优化提供了可信的基础数据,能够指导基于Xeon Phi处理器上的功耗优化。Accurately measuring and analyzing the power consumption characteristics of the Xeon Phi coprocessor is a basic prerequisite of power management and optimization. However, accurately profiling and analyzing the power consumption of parallel programs running on Xeon Phi is not straight forward. This paper uses special measurement equipment to measure power consumption of Xeon Phi coprocessor. The real-time voltage and current of 14 power supply channels are completely measured, which can get the power consumption of coprocessor by calculation. Based on the measuared data some power characteristic about starting-up power, idle power, thread power and memory hierarchy power. Experimental results show that this paper provides credible power consumption data for power optimization, it can guide the power optimization of processors Xeon Phi.

关 键 词：功耗效率 协处理器 高性能计算 能量关注计算 能量优化 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]