NDLI: An Optimal Semi-partitioned Scheduler for Uniform Heterogeneous Multiprocessors

Content Provider	IEEE Xplore Digital Library
Author	Kecheng Yang Anderson, J.H.
Copyright Year	2015
Description	Author affiliation: Dept. of Comput. Sci., Univ. of North Carolina at Chapel Hill, Chapel Hill, NC, USA (Kecheng Yang; Anderson, J.H.)
Abstract	A semi-partitioned scheduler called EDF-tu is presented that is the first such scheduler to be optimal on uniform heterogeneous multiprocessors. EDF-tu utilizes an adjustable allocation parameter called a frame to schedule tasks that migrate. The frame size F must divide all task periods to ensure hard real-time optimality, but for any choice of F, maximum deadline tardiness is at most F. Thus, the proper selection of F hinges on runtime overheads (which are higher when F is smaller) and the strength of the real-time guarantee desired. When determining which tasks must migrate, new issues specific to heterogeneous platforms arise that have not been explored before. It is shown via counterexamples that resolving such issues differently from EDF-tu can render feasible task systems unschedulable.
Starting Page	199
Ending Page	210
File Size	293545
Page Count	12
File Format	PDF
ISBN	9781467375702
ISSN	10683070
DOI	10.1109/ECRTS.2015.25
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-08
Publisher Place	Sweden
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Program processors Schedules Real-time systems Processor scheduling Resource management Scheduling Multicore processing uniform platforms real-time scheduling semi-partitioned scheduling heterogeneous multiprocessors
Content Type	Text
Resource Type	Article

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