Clustering based simulated annealing for standard cell placement
DAC '88 Proceedings of the 25th ACM/IEEE Design Automation Conference
Proud: a fast sea-of-gates placement algorithm
DAC '88 Proceedings of the 25th ACM/IEEE Design Automation Conference
A high packing density module generator for CMOS logic cells
DAC '88 Proceedings of the 25th ACM/IEEE Design Automation Conference
Superpipelined control and data path synthesis
DAC '92 Proceedings of the 29th ACM/IEEE Design Automation Conference
Deriving efficient area and delay estimates by modeling layout tools
DAC '95 Proceedings of the 32nd annual ACM/IEEE Design Automation Conference
Modeling layout tools to derive forward estimates of area and delay at the RTL level
ACM Transactions on Design Automation of Electronic Systems (TODAES)
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A comparison of four layout tools is presented. The layout style is a two-dimensional gate matrix. The first layout tool discussed uses “standard” simulated annealing. Annealing on gate clusters instead of individual gates can be used to improve the layout results. Two different ways of determining good gate clusters for use in the annealing process are compared. The first way uses clusters derived from user specified gate hierarchies, while the second determines clusters based on gate connectivity. The fourth layout tool uses a decomposition scheme based on quadrisection. Layout results for a set of benchmark circuits are presented for each of the tools.