Provably Fast and Near-Optimum Gate Sizing

Autor: Siad Daboul, Nicolai Hahnle, Ulrike Schorr, Stephan Held
Rok vydání: 2018
Předmět:
Zdroj: IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems. 37:3163-3176
ISSN: 1937-4151
0278-0070
DOI: 10.1109/tcad.2018.2801231
Popis: We present a new approach for the cell selection problem based on a resource sharing formulation, which is a specialization of Lagrangian relaxation with multiplicative weight updates. For the convex continuous gate sizing problem, we can prove fast polynomial running times. This theoretical result also gives some justification to previous heuristic multiplicative weight update methods. For the discrete cell selection problem, where voltage thresholds can also be chosen, we employ the new algorithm heuristically and achieve superior results on industrial benchmarks compared with one of the previously best known algorithms, and competitive results on the ISPD 2013 benchmarks. Finally, we demonstrate how the approach can be parallelized effectively achieving speed-ups of up to 16.
Databáze: OpenAIRE