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Abstract
Interconnect planning is an important issue in VLSI designs. Routing congestion is an important problem during placement. This paper presents a novel approach to estimating the routing congestion on the hexagonal model with bounded-length detours. It is the first probabilistic estimation work on hexagonal topologies. A combinatorial estimation algorithm is presented. The experimental results demonstrate the effectiveness of the method.
Acknowledgements
We are grateful to Yu Xiao, for his implementation experiments. This research was funded in part by the Chinese National 973 Plan (Project No. 2004CB719400), PR China.