Genetic Spot Optimization for Peak Power Estimation in Large
Michael S. Hsiao · 2002
Estimating peak power involves optimization of the circuit’s switching function. The switching of agiven gate is not only dependent on the output capacitance of the node, but also heavily dependent onthe gate delays in the circuit, since multiple switching events can result from uneven circuit delay pathsin the circuit. Genetic spot expansion and optimization are proposed in this paper to estimate tight peakpower bounds for large sequential circuits. The optimization spot shifts and expands dynamically basedon the maximum power potential (MPP) of the nodes under optimization. Four genetic spotoptimization heuristics are studied for sequential circuits. Experimental results showed an average of70.7% tighter peak power bounds for large sequential benchmark circuits was achieved in shortexecution times.Keywords: Power estimation; Peak power; Non zero delay; Genetic optimization; Low-power design