NDLI: A Look-Ahead Task Management Unit for Embedded Multi-Core Architectures

Content Provider	IEEE Xplore Digital Library
Author	Sjalander, M. Terechko, A. Duranton, M.
Copyright Year	2008
Description	Author affiliation: Embedded Modem & Media Subsystems, NXP Semicond., Eindhoven (Terechko, A.; Duranton, M.) \|\| Dept. of Comput. Sci. & Eng., Chalmers Univ. of Technol., Goteborg (Sjalander, M.)
Abstract	Efficient utilization of multi-core architectures relies on the partitioning of applications into tasks and mapping the tasks to cores. In some applications (e.g. H.264 video decoding parallelized at macro-block level) these tasks have dependencies among each other. Task scheduling, consisting of selecting a task with satisfied dependencies and mapping it to a core, is typically a functionality delegated to the operating system. In this paper we present a hardware Task Management Unit (TMU) that looks ahead in time to find tasks to be executed by a multi-core architecture. The look-ahead functionality is shown to reduce the task management overhead by 40-50% when executing a parallelized version of an H.264 video decoder on an architecture with up to 16 cores. In overall, the TMU-based multi-core architecture reaches a speedup of more than 14times on 16 cores running H.264 video decoding, assuming CABAC is implemented in a dedicated coprocessor.
Starting Page	149
Ending Page	157
File Size	466766
Page Count	9
File Format	PDF
ISBN	9780769532776
DOI	10.1109/DSD.2008.45
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-09-03
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computer architecture Application software Decoding Hardware Digital systems Design methodology Conference management Technology management Engineering management Computer science parallelism Look-Ahead multi-core task management
Content Type	Text
Resource Type	Article

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