文章基本信息

标题：マルチコアでのメディア処理におけるプロセッサ動作時消費エネルギー低減方式の提案
本地全文：下载
作者：十山圭介 ; 久保田瞬 ; 山本修一郎等
期刊名称：映像情報メディア学会誌
印刷版ISSN：1342-6907
电子版ISSN：1881-6908
出版年度：2012
卷号：66
期号：3
页码：J74-J84
DOI：10.3169/itej.66.J74
出版社：The Institute of Image Information and Television Engineers
摘要：Mobile appliances need to work at a low level of power as well as perform at a high level. As energy consumption and execution speed are in a reciprocal relation, using a combination of a multicore processor system and its controlling software is a key to reducing energy. We are developing an on-chip multicore architecture for embedded systems with high performance at low power and cost. We propose a method of reducing the energy consumed for this system during execution by parallelizing and applying Dynamic Voltage Frequency Scaling (DVFS) to each element processor in accordance with its workload. The program's workload at runtime needs to be accurately estimated, and the most appropriate frequency and voltage for each processor running an application is chosen. We propose and evaluate a method for predicting the progress of an application by inserting checkpoints and getting a minimal number of processors for the least energy.
关键词：マルチプロセッサ;マルチコア;並列処理;消費電力制御;周波数-電圧協調型電力制御