Minimum-Energy Semi-Static Scheduling of a Periodic Real-Time Task on DVFS-Enabled Multi-Core Processors

Wan Yeon LEE
Hyogon KIM
Heejo LEE

IEICE TRANSACTIONS on Information and Systems   Vol.E94-D    No.12    pp.2389-2392
Publication Date: 2011/12/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E94.D.2389
Print ISSN: 0916-8532
Type of Manuscript: Special Section LETTER (Special Section on Parallel and Distributed Computing and Networking)
scheduling,  real-time task,  multi-core,  energy,  DVFS,  

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The proposed scheduling scheme minimizes the energy consumption of a real-time task on the multi-core processor with the dynamic voltage and frequency scaling capability. The scheme allocates a pertinent number of cores to the task execution, inactivates unused cores, and assigns the lowest frequency meeting the deadline. For a periodic real-time task with consecutive real-time instances, the scheme prepares the minimum-energy solutions for all input cases at off-line time, and applies one of the prepared solutions to each real-time instance at runtime.