Title :
Applying the zeros switch-off technique to reduce static energy in data caches
Author :
Ubal, R. ; Sahuquillo, J. ; Petit, S. ; López, P.
Author_Institution :
Dept. of Comput. Eng., Univ. Politecnica de Valencia
Abstract :
Zeros switch-off is a leakage energy reduction technique applicable to cache memories. It works at the cache word level by removing the power supply of all or part of its most significant bytes when they store a zero, taking advantage of the high percentage of zero data bits in common programs. Experimental results, obtained by using the SPEC2000 benchmarks suite, show that the average leakage energy savings reach 60.3% with no IPC loss indeed. The proposed technique can be combined with other existing energy reduction techniques, reaching, on average, 67.3% savings with 0.5% IPC losses
Keywords :
cache storage; low-power electronics; cache word level; data caches; leakage energy reduction; static energy reduction; zeros switch-off technique; Cache memory; Data engineering; Energy consumption; Portable computers; Power engineering and energy; Power engineering computing; Power supplies; Silicon; Space technology; Voltage;
Conference_Titel :
Computer Architecture and High Performance Computing, 2006. SBAC-PAD '06. 18TH International Symposium on
Conference_Location :
Ouro Preto
Print_ISBN :
0-7695-2704-3
DOI :
10.1109/SBAC-PAD.2006.8