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An Integrated Framework for Energy Optimization of Embedded Real-Time Applications

Hideki TAKASE, Gang ZENG, Lovic GAUTHIER, Hirotaka KAWASHIMA, Noritoshi ATSUMI, Tomohiro TATEMATSU, Yoshitake KOBAYASHI, Takenori KOSHIRO, Tohru ISHIHARA, Hiroyuki TOMIYAMA, Hiroaki TAKADA

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Summary :

This paper presents a framework for reducing the energy consumption of embedded real-time systems. We implemented the presented framework as both an optimization toolchain and an energy-aware real-time operating system. The framework consists of the integration of multiple techniques to optimize the energy consumption. The main idea behind our approach is to utilize trade-offs between the energy consumption and the performance of different processor configurations during task checkpoints, and to maintain memory allocation during task context switches. In our framework, a target application is statically analyzed at both intra-task and inter-task levels. Based on these analyzed results, runtime optimization is performed in response to the behavior of the application. A case study shows that our toolchain and real-time operating systems have achieved energy reduction while satisfying the real-time performance. The toolchain has also been successfully applied to a practical application.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E97-A No.12 pp.2477-2487
Publication Date
2014/12/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E97.A.2477
Type of Manuscript
Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category
High-Level Synthesis and System-Level Design

Authors

Hideki TAKASE
  Nagoya University
Gang ZENG
  Nagoya University
Lovic GAUTHIER
  Kyushu University
Hirotaka KAWASHIMA
  Nagoya University
Noritoshi ATSUMI
  Nagoya University
Tomohiro TATEMATSU
  Nagoya University
Yoshitake KOBAYASHI
  Toshiba Corporation
Takenori KOSHIRO
  Toshiba Corporation
Tohru ISHIHARA
  Kyushu University
Hiroyuki TOMIYAMA
  Ritsumeikan University
Hiroaki TAKADA
  Nagoya University

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