On the bounded-skew clock and Steiner routing problems

Dennis J. H. Huang, Andrew B. Kahng, Chung-Wen Albert Tsao
1995 Proceedings of the 32nd ACM/IEEE conference on Design automation conference - DAC '95  
We study the minimum-cost bounded-skewrouting tree (BST) problem under the linear delay model. This problem captures several engineering tradeoffs in the design of routing topologies with controlled skew. We propose three tradeoff heuristics. (1) For a fixed topology Extended-DME (Ex-DME) extends the DME algorithm for exact zero-skew trees via the concept of a merging region. (2) For arbitrary topology and arbitrary embedding, Extended Greedy-DME (ExG-DME) very closely matches the best known
more » ... ristics for the zero-skew case,and for the infinite-skew case (i.e., the Steiner minimal tree problem). ( 3 ) For arbitrary topology and single-layer (planar) embedding, the Extended Planar-DME (ExP-DME) algorithm exactly matches the best known heuristic for zero-skew planar routing, and closely approaches the best known performance for the infinite-skew case. Our work provides unifications of the clock routing and Steiner tree heuristic literatures and gives smooth cost-skew tradeoff that enable good engineering solutions.
doi:10.1145/217474.217579 dblp:conf/dac/HuangKT95 fatcat:ycpwtt6qgnan7fv3azfatsxj6u