Proceedings of the 2008 international symposium on Physical design
A generalization of Dijkstra's shortest path algorithm with applications to VLSI routing
Journal of Discrete Algorithms
Double patterning lithography aware gridless detailed routing with innovative conflict graph
Proceedings of the 47th Design Automation Conference
Dead via minimization by simultaneous routing and redundant via insertion
Proceedings of the 2010 Asia and South Pacific Design Automation Conference
ACM Transactions on Design Automation of Electronic Systems (TODAES)
SIAR: splitting-graph-based interactive analog router
Proceedings of the 21st edition of the great lakes symposium on Great lakes symposium on VLSI
DOPPLER: DPL-aware and OPC-friendly gridless detailed routing with mask density balancing
Proceedings of the International Conference on Computer-Aided Design
TRIAD: a triple patterning lithography aware detailed router
Proceedings of the International Conference on Computer-Aided Design
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The implicit-connection-graph-based router is superior to the tile-based router in terms of routing graph construction and point querying. However, the implicit connection graph has a higher degree of routing graph complexity. In this paper, a new multilayer implicit-connection-graph-based gridless router called NEMO is developed. Unlike the first implicit-connection-graph-based router that embeds all routing layers onto a routing plane, NEMO constructs a routing plane for each routing layer. Additionally, each routing plane comprises tiles, not an array of grid points with their connecting edges, and consequently, the complexity of the routing problem decreases. Each grid point then represents exactly one tile or its left-bottom corner such that a tile query is equivalent to any point query inside the queried tile, and a grid maze becomes tile propagation. Furthermore, to accelerate path search, continuous space tiles are combined as a pseudo maximum horizontally or vertically stripped tile. Experimental results reveal that NEMO conducts a point-to-point path search around ten times faster than the implicit-connection-graph-based router. General-purpose routing by NEMO also improves routing performance by approximately 1.69times-55.82 times, as compared to previously published works based on a set of commonly used MCNC benchmark circuits