Dynamic Thermal Management for MPEG-2 Decoding

Author

Lee, Wonbok ; Patel, Kimish ; Pedram, Massoud

Author_Institution

Dept. of Electr. Eng., Southern California Univ., Los Angeles, CA

fYear

2006

fDate

4-6 Oct. 2006

Firstpage

316

Lastpage

321

Abstract

In this paper, we propose an effective dynamic thermal management (DTM) scheme for MPEG-2 decoding by allowing some degree of spatiotemporal quality degradation. Given a target MPEG-2 decoding time, we dynamically select either an intra-frame spatial degradation or an inter-frame temporal degradation strategy in order to make sure that the microprocessor chip continues to stay in a thermally safe state of operation, albeit with certain amount of image/video quality loss. For our experiments, we use the MPEG-2 decoder program of MediaBench and modify/combine Wattch and HotSpot for the power and thermal simulations and measurements, respectively. Our experimental results show that we achieve thermally safe state with spatial quality degradation of 0.12 root mean square error (RMSE) and with frame drop rate of 12.5% on average

Keywords

decoding; image coding; mean square error methods; microprocessor chips; thermal management (packaging); DTM scheme; MPEG-2 decoding; RMSE; dynamic thermal management; frame drop rate; image quality loss; interframe temporal degradation strategy; intraframe spatial degradation strategy; microprocessor chip; root mean square error; spatial quality degradation; spatiotemporal quality degradation; thermal simulations; video quality loss; Cooling; Decoding; Microprocessor chips; Packaging; Power dissipation; Quality management; Temperature; Thermal degradation; Thermal engineering; Thermal management; Design; MPEG-2 decoding; Reliability; Thermal model; temperature-aware design;

fLanguage

English

Publisher

ieee

Conference_Titel

Low Power Electronics and Design, 2006. ISLPED'06. Proceedings of the 2006 International Symposium on

Conference_Location

Tegernsee

Print_ISBN

1-59593-462-6

Type

conf

DOI

10.1109/LPE.2006.4271856

Filename

4271856