NDLI: Application-driven processor design exploration for power-performance trade-off analysis

Content Provider	IEEE Xplore Digital Library
Author	Marculescu, D. Iyer, A.
Copyright Year	2001
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA (Marculescu, D.)
Abstract	This paper presents an efficient design exploration environment for high-end core processors. The heart of the proposed design exploration framework is a two-level simulation engine that combines detailed simulation for critical portions of the code with fast profiling for the rest. Our two-level simulation methodology relies on the inherent clustered structure of application programs and is completely general and applicable to any microarchitectural power/performance simulation engine. The proposed simulation methodology is 3-17/spl times/ faster, while being sufficiently accurate (within 5%) when compared to the fully detailed simulator The design exploration environment is able to vary different microarchitectural configurations and find the optimal one as far as energy/spl times/delay product is concerned in a matter of minutes. The parameters that are found to affect drastically the core processor power/performance metrics are issue width, instruction window size, and pipeline depth, along with correlated clock frequency. For very high-end configurations for which balanced pipelining, may not be possible, opportunities for running faster stages at lower voltage exist. In such cases, by using up to 3 voltage levels, the energy/spl times/delay product is reduced by 23-30% when compared to the single voltage implementation.
Starting Page	306
Ending Page	313
File Size	1232713
Page Count	8
File Format	PDF
ISBN	0780372476
ISSN	10923152
DOI	10.1109/ICCAD.2001.968638
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-11-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Process design Microarchitecture Pipeline processing Voltage Circuits Power system modeling Power engineering computing Power engineering and energy Computational modeling Engines
Content Type	Text
Resource Type	Article
Subject	Computer Graphics and Computer-Aided Design Computer Science Applications Software

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