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Publication Details for Inproceedings "Dynamic Counters and the Efficient and Effective Online Power Management of Embedded Real-time Systems"

 

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Authors: Kai Lampka, Kai Huang, Jian-Jia Chen
Group: Computer Engineering
Type: Inproceedings
Title: Dynamic Counters and the Efficient and Effective Online Power Management of Embedded Real-time Systems
Year: 2011
Month: October
Pub-Key: LHC11
Book Titel: Proceedings of the 8th International Conference on Hardware/Software Codesign and System Synthesis, CODES+ISSS 2011
Pages: 267-276
Keywords: Dynamic Power Management, Energy Minimization, Real-Time Event Streams, Real-Time Calculus
Publisher: ACM
Abstract: Energy reduction has become an important issue for modern embedded systems. On one hand, we would like to deploy high-performance systems and provide guaranteed services. On the other hand, systems should last as long as possible which can be achieved by reducing their energy consumption. With on-line dynamic power management (DPM), one adaptively changes the system's power mode, i.e., schedules when to turn on and off on-the-fly, to achieve energy savings. This paper introduces dynamic counters and discusses their usage in the context of (online) DPM under the premises that the system has to fulfill hard real-time requirements. At its core the proposed scheme enables one to conservatively bound a device's future workload and to exploit this bound for safely scheduling when to turn the device on and off. Compared to previous work in this direction the proposed technique does not need to store stream's history explicitly, nor does it rely on computationally expensive operations for constructing history-dependent functions for bounding the future workload of a device. Hence the proposed technique is more efficient. Moreover, as the computed bounds are also less pessimistic, the introduced technique is also more effective with respect to energy savings. We present simulation results to demonstrate the effectiveness and efficiency.
Remarks: Part of the Seventh Embedded Systems Week 2011
Location: Taipei, Taiwan
Resources: [BibTeX] [Paper as PDF]

 

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