Title :
A history-based I-cache for low-energy multimedia applications
Author :
Inoue, Ken ; Moshnyaga, V.G. ; Murakarni, K.
Author_Institution :
Dept. of Elec. Eng. & Comput. Sci., Fukuoka Univ., Japan
Abstract :
This paper proposes a history-based tag-comparison scheme for reducing energy consumption of direct-mapped instruction caches. The proposed cache efficiently exploits program-execution footprints recorded in the branch target buffer (BTB), and attempts to detect; and eliminate unnecessary tag checks at run time. Simulation results show that our approach can eliminate up to 95% of tag checks, saving the cache energy by 17%, while affecting the processor performance by only 0.2%.
Keywords :
cache storage; circuit simulation; integrated circuit design; integrated circuit modelling; logic CAD; logic simulation; low-power electronics; microprocessor chips; multimedia computing; BTB; branch target buffer; cache energy saving; direct-mapped instruction caches; energy consumption reduction; history-based instruction-cache; history-based tag-comparison scheme simulation; low power applications; low-energy multimedia applications; processor performance; program-execution footprints; run time tag checks; unnecessary tag check detection/elimination; Application software; Computational modeling; Computer science; Energy consumption; Handheld computers; Hardware; Informatics; Microprocessors; Permission; Random access memory;
Conference_Titel :
Low Power Electronics and Design, 2002. ISLPED '02. Proceedings of the 2002 International Symposium on
Print_ISBN :
1-5811-3475-4
DOI :
10.1109/LPE.2002.146728
