Accurate energy breakeven time estimation for run-time power gating

Hao Xu, Wen-Ben Jone, Ranga Vemuri
2008 2008 IEEE/ACM International Conference on Computer-Aided Design  
Run-time Power Gating (RTPG) is a recent technique, which aims at aggressively reducing leakage power consumption. Energy breakeven time (EBT), or equivalent sleep time has been proposed as a critical figure of merit of RTPG. Our research introduces the definition of average EBT in a runtime environment. We develop a method to estimate the average EBT for any given circuit block, considering the impact of circuit states. HSPICE simulation results on ISCAS85 benchmark circuits show that the
more » ... show that the average EBT model has on the average 1.8% error. The CAD tool implemented based on the model can perform fast estimations with a speedup of 3000× over HSPICE.
doi:10.1109/iccad.2008.4681568 dblp:conf/iccad/XuJV08 fatcat:oqwzkcujovbhdnco2q4jxag2la