任务敏感的多模式视频编码系统功耗控制方法

doi:10.3969/j.issn.0372-2112.2016.07.011

电子学报 ›› 2016, Vol. 44 ›› Issue (7): 1592-1598.DOI: 10.3969/j.issn.0372-2112.2016.07.011

任务敏感的多模式视频编码系统功耗控制方法

曹倩¹, 李辉勇², 左敏¹, 姜同强¹, 蔡强¹, 王瑜¹

1. 北京工商大学计算机与信息工程学院食品安全大数据技术北京市重点实验室, 北京 100048;
2. 北京航空航天大学计算机学院, 北京 100191

收稿日期:2015-11-03 修回日期:2016-03-03 出版日期:2016-07-25 发布日期:2016-07-25
通讯作者: 李辉勇
作者简介:曹倩女,1983年出生于河北保定.获北京科技大学工学博士学位,现于北京工商大学计算机与信息工程学院任研究生导师.研究方向包含高性能计算与并行计算、智能管理与数据挖掘
基金资助:
北京市教委科学研究面上项目(No.KM201410011005);北京市优秀人才培养资助项目(No.2015000020124G029);北京工商大学教育教学改革项目(No.jg155225);国家科技支撑计划(No.2015BAK36B04);北京市青年拔尖人才计划(No.CIT&TCD201404029);北京市自然基金重点项目(No.KZ201410011014);轨道交通控制与安全国家重点实验室(北京交通大学)开放课题(No.RCS2015K009)

Task-Aware Power Control Method for Multi-Mode Video Compression System

CAO Qian¹, LI Hui-yong², ZUO Min¹, JIANG Tong-qiang¹, CAI Qiang¹, WANG Yu¹

1. Beijing Key Laboratory of Big Data Technology for Food Safety, School of Computer and Information Engineering, Beijing Technology and Business University, Beijing 100048, China;
2. School of Computer Engineering, Beihang University, Beijing 100191, China

Received:2015-11-03 Revised:2016-03-03 Online:2016-07-25 Published:2016-07-25

摘要/Abstract

摘要：

在嵌入式多模式视频编码系统中,动态电压频率调整(Dynamic Voltage and Frequency Scaling,DVFS)技术可在一定程序上节约系统能耗,然而持续降低电压和频率可能影响处理器接口资源的传输性能,甚至导致系统无法正常工作.针对该问题,提出了一种任务敏感的功耗控制方法.通过研究多模式视频编码任务量和处理器资源之间的关系,建立一个任务敏感的资源配置模型,基于该模型设计了一个自适应功耗控制器,在系统工作过程中根据编码任务量的不同动态调节处理器工作频率和工作核数.实验表明,在满足多模式实时视频编码功能和性能要求的基础上,该文提出的方法与传统DVFS技术相比,单帧视频编码的平均功耗节省了11.4%.

关键词: 功耗, 多模式视频, 嵌入式系统, DVFS, 视频编码

Abstract:

Dynamic voltage and frequency scaling (DVFS) technique,to some extent,controls the energy consumption for embedded multi-mode real-time video compression system.Yet,continuously decreasing voltage and frequency might affect interface resource transfers and even the normal system operations.To solve the problem,we proposed a task-aware power control method in response to task variations.We first analyzed the relationship between the workloads and processor resources,and then established a task-aware resource configuration model.Based on this model,we designed an adaptive power controller,which dynamically adjusts processor frequency and the number of cores.The experiments indicate that our method fulfills function and performance requirements of multi-mode video encoding system,with power consumption for encoding a frame reduced by 11.4% compared with traditional DVFS technique.

Key words: power consumption, multi-mode video, embedded system, DVFS, video compression

中图分类号:

TN919

曹倩, 李辉勇, 左敏, 姜同强, 蔡强, 王瑜. 任务敏感的多模式视频编码系统功耗控制方法[J]. 电子学报, 2016, 44(7): 1592-1598.

CAO Qian, LI Hui-yong, ZUO Min, JIANG Tong-qiang, CAI Qiang, WANG Yu. Task-Aware Power Control Method for Multi-Mode Video Compression System[J]. Acta Electronica Sinica, 2016, 44(7): 1592-1598.

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任务敏感的多模式视频编码系统功耗控制方法

Task-Aware Power Control Method for Multi-Mode Video Compression System

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