DocumentCode :
1902617
Title :
Energy-Efficient Real-Time Co-scheduling of Multimedia DSP Jobs
Author :
Chen, Chien-Wei ; Yang, Chuan-Yue ; Kuo, Tei-Wei ; Chang, Ming-Wei
Author_Institution :
Dept. of Comput. Sci., Grad. Inst. of Networking & Multimedia, Taipei
fYear :
2008
fDate :
11-13 June 2008
Firstpage :
225
Lastpage :
232
Abstract :
While DSP´s are now widely adopted in many embedded systems in the cost minimization and the resolving of computing needs of various multimedia applications, little work is done for energy-efficient real-time job scheduling over DSP´s. As motivated by the needs, a set of sliding-window- based algorithms are proposed. A sequence of time points and their corresponding processor speeds is generated to run jobs of a periodic task on the DSP, such as that for the decoding of an H.264 stream. An online DVS scheme for energy minimization with constrained buffer size consideration is proposed, and the capability of the scheme is evaluated by a series of experiments over real and synthesized traces. It was shown that the energy saving can be up to 44%, and prediction errors were not significant enough to result in more than 3% in deadline missing.
Keywords :
digital signal processing chips; minimisation; multimedia communication; processor scheduling; constrained buffer size; energy minimization; energy-efficient real-time job scheduling; multimedia DSP; sliding-window-based algorithm; Costs; Digital signal processing; Embedded computing; Embedded system; Energy efficiency; Energy resolution; Multimedia computing; Multimedia systems; Processor scheduling; Real time systems; Energy-Efficient Scheduling; Preemption Control; Real-Time Systems; System-Wide Energy Efficiency;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Sensor Networks, Ubiquitous and Trustworthy Computing, 2008. SUTC '08. IEEE International Conference on
Conference_Location :
Taichung
Print_ISBN :
978-0-7695-3158-8
Electronic_ISBN :
978-0-7695-3158-8
Type :
conf
DOI :
10.1109/SUTC.2008.54
Filename :
4545761
Link To Document :
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