A timing-perspective study on the wire model in placement

Timing-driven placement has been studied for decades. Many algorithms use traditional wire-length-metric wire models and formulations to add timing driven strategies. Few works try to explore the timing potentials from the wire model of placement. Especially in the current sub-45nm era, two nets with the same wire length possibly vary distinctly from the timing property. In this paper, we explore several factors that affect a net´s worst delay and average delay in addition to the tradition interconnect wire condition. We hope to employ them in future timing-driven placement. Theoretic analysis and experimental verification are provided as well.