一种新的基于动态电压调整的单任务调度方法  

New Approach for Intra-Task Dynamic Voltage Scheduling

作　　者：雷霆[1] 胡潇[1] 李曦[1] 周学海[1] 

机构地区：[1]中国科学技术大学计算机科学技术系,安徽合肥230026

出　　处：《小型微型计算机系统》2005年第12期2176-2180,共5页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(60273042)资助.

摘　　要：合理运用动态电压调整技术可以有效降低实时任务运行所需的能耗.提出了一种新的单任务DV S调度方法,针对程序的平均执行信息,并结合参数化动态预测策略,合理设置电压/频率调整点.实验结果表明,该方法能够充分利用动态松弛时间,有效控制调整开销,实现较高的能耗优化率.Dynamic voltage scaling is an effective technique for developing low-energy real-time applications. In this paper, a new approach for intra-task dynamic voltage scheduling is proposed. The voltage/frequency scaling points are reasonably placed in programs based on the average-case execution cycles. Parametric dynamic prediction strategy is adopted to further improve the energy reduction ratio. Experiments show that this approach can achieve high energy reduction ratio by exploiting the dynamic slack time sufficiently and controlling the scaling overheads effectively.

关 键 词：低能耗 可变电压处理器 频率调整点 实时程序 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]