首页> 外文会议>International Conference on Embedded Software and Systems(ICESS 2005); 20051216-18; Xi'an(CN) >The Optimal Profile-Guided Greedy Dynamic Voltage Scaling in Real-Time Applications
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The Optimal Profile-Guided Greedy Dynamic Voltage Scaling in Real-Time Applications

机译:实时应用中最优的轮廓引导贪婪动态电压缩放

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Compiler-directed dynamic voltage scaling (DVS) is an effective low-power technique in real-time applications, where compiler inserts voltage scaling points in a real-time application, and supply voltage and clock frequency are adjusted to the relationship between the remaining time and the remaining workload at each voltage scaling point. Greedy dynamic voltage scaling is one of the voltage adjustment schemes, where the slack time of current section is completely used to reduce the clock frequency of next section. In this paper we present the analytical model of the greedy scheme, and by simulations using the analytical model, we find out that the greedy scheme obstructs itself from effectively utilizing the slack times. So we propose a profile-guided greedy voltage adjustment scheme directed by the optimal realtime voltage scheduling in the most frequent execution case. We show by simulations that the new voltage adjustment scheme obtains the largest reduction of energy consumption of all the current representative schemes.
机译:编译器控制的动态电压缩放(DVS)是实时应用中的一种有效的低功耗技术,其中,编译器在实时应用中插入电压缩放点,然后将电源电压和时钟频率调整为剩余时间之间的关系。以及每个电压缩放点的剩余工作量。贪婪的动态电压缩放是电压调节方案之一,其中电流部分的松弛时间被完全用来降低下一部分的时钟频率。在本文中,我们介绍了贪婪方案的分析模型,并通过使用该分析模型的仿真发现,贪婪方案阻碍了其有效利用松弛时间。因此,在最频繁执行的情况下,我们提出了一种由最优实时电压调度指导的配置文件引导的贪婪电压调整方案。通过仿真显示,新的电压调整方案在所有当前的代表性方案中均获得了最大的能耗降低。

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