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Global Adaptation Controlled by an Interactive Consistency Protocol

Institute of Embedded Systems, University of Siegen, Adolf-Reichwein-Straße 2, 57068 Siegen, Germany
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Current address: Hoelderlinstr. 3, 57076 Siegen, Germany.
Academic Editor: Davide Patti
J. Low Power Electron. Appl. 2017, 7(2), 13;
Received: 11 February 2017 / Revised: 24 May 2017 / Accepted: 25 May 2017 / Published: 28 May 2017
(This article belongs to the Special Issue Emerging Network-on-Chip Architectures for Low Power Embedded Systems)
Static schedules for systems can lead to an inefficient usage of the resources, because the system’s behavior cannot be adapted at runtime. To improve the runtime system performance in current time-triggered Multi-Processor System on Chip (MPSoC), a dynamic reaction to events is performed locally on the cores. The effects of this optimization can be increased by coordinating the changes globally. To perform such global changes, a consistent view on the system state is needed, on which to base the adaptation decisions. This paper proposes such an interactive consistency protocol with low impact on the system w.r.t. latency and overhead. We show that an energy optimizing adaptation controlled by the protocol can enable a system to save up to 43% compared to a system without adaptation. View Full-Text
Keywords: real-time; low power; mixed-criticality real-time; low power; mixed-criticality
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Lenz, A.; Obermaisser, R. Global Adaptation Controlled by an Interactive Consistency Protocol. J. Low Power Electron. Appl. 2017, 7, 13.

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