Methods for power optimization in distributed embedded systems with real-time requirements

  • Authors:
  • Razvan Racu;Arne Hamann;Rolf Ernst;Bren Mochocki;Xiaobo Sharon Hu

  • Affiliations:
  • IDA, Technical University of Braunschweig, Braunschweig, Germany;IDA, Technical University of Braunschweig, Braunschweig, Germany;IDA, Technical University of Braunschweig, Braunschweig, Germany;University of Notre Dame, Notre Dame,IN;University of Notre Dame, Notre Dame,IN

  • Venue:
  • CASES '06 Proceedings of the 2006 international conference on Compilers, architecture and synthesis for embedded systems
  • Year:
  • 2006

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Abstract

Dynamic voltagescaling and sleep state control have been shown to be extremely effective in reducing energy consumption in CMOS circuits. Though plenty of research papers have studied the application of these techniques in real-time embedded system design through intelligent task and/or voltage scheduling, most of these results are limited to relatively simple real-time application models. In this paper, a comprehensive real-time application model including periodic, sporadic and bursty tasks as well as distributed real-time constraints such as end-to-end delays is considered. Two methods are presented for reducing energy consumption while satisfying complex real-time constraints for this model. Experimental results show that the methods achieve significant energy savings without violating any deadlines.