DocumentCode :
2988229
Title :
Cache Memory Architecture for Leakage Energy Reduction
Author :
Tanaka, Kiyofumi
Author_Institution :
Japan Adv. Inst. of Sci. & Technol., Tatsunokuchi
fYear :
2007
fDate :
11-13 Jan. 2007
Firstpage :
73
Lastpage :
80
Abstract :
Recently, energy dissipation by microprocessors is getting larger, which leads to a serious problem in terms of allowable temperature and performance improvement for future microprocessors. Cache memory is effective in bridging a growing speed gap between a processor and relatively slow external main memory, and has increased in its size. Almost all of today´s commercial processors, not only high- performance microprocessors but embedded ones, have on- chip cache memories. However, energy dissipation in the cache memory will approach or exceed 50% of the increasing total energy dissipation by processors. An important point to note is that, in the near future, static (leakage) energy will dominate the total energy consumption in deep sub-micron processes. This paper describes cache memory architecture, especially for on-chip multiprocessors, that achieves efficient reduction of leakage energy in cache memories by exploiting gated-Vdd control, software self- invalidation for LI cache, and dynamic data compression for L2 cache. The simulation results show that our techniques can reduce a substantial amount of leakage energy without large performance degradation.
Keywords :
cache storage; leakage currents; memory architecture; microprocessor chips; cache memory architecture; deep submicron process; energy dissipation; high-performance microprocessors; leakage energy reduction; on-chip cache memories; on-chip multiprocessors; Cache memory; Clocks; Counting circuits; Data compression; Energy consumption; Energy dissipation; Frequency; Hardware; Memory architecture; Microprocessors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Innovative architecture for future generation high-performance processors and systems, 2007. iwia 2007. international workshop on
Conference_Location :
Maui, HI
ISSN :
1537-3223
Print_ISBN :
0-7695-3077-X
Type :
conf
DOI :
10.1109/IWIA.2007.12
Filename :
4450645
Link To Document :
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