RISA: accurate and efficient placement routability modeling
ICCAD '94 Proceedings of the 1994 IEEE/ACM international conference on Computer-aided design
Congestion driven quadratic placement
DAC '98 Proceedings of the 35th annual Design Automation Conference
On the behavior of congestion minimization during placement
ISPD '99 Proceedings of the 1999 international symposium on Physical design
Multi-center congestion estimation and minimization during placement
ISPD '00 Proceedings of the 2000 international symposium on Physical design
Modeling and minimization of routing congestion
ASP-DAC '00 Proceedings of the 2000 Asia and South Pacific Design Automation Conference
Congestion estimation during top-down placement
Proceedings of the 2001 international symposium on Physical design
A new congestion-driven placement algorithm based on cell inflation
Proceedings of the 2001 Asia and South Pacific Design Automation Conference
An effective congestion driven placement framework
Proceedings of the 2002 international symposium on Physical design
Physical hierarchy generation with routing congestion control
Proceedings of the 2002 international symposium on Physical design
Routability driven white space allocation for fixed-die standard-cell placement
Proceedings of the 2002 international symposium on Physical design
Proceedings of the 39th annual Design Automation Conference
Accurate pseudo-constructive wirelength and congestion estimation
Proceedings of the 2003 international workshop on System-level interconnect prediction
Congestion minimization during placement without estimation
Proceedings of the 2002 IEEE/ACM international conference on Computer-aided design
Improved global routing through congestion estimation
Proceedings of the 40th annual Design Automation Conference
Probabilistic congestion prediction
Proceedings of the 2004 international symposium on Physical design
Routability-driven placement and white space allocation
Proceedings of the 2004 IEEE/ACM International conference on Computer-aided design
FLUTE: fast lookup table based wirelength estimation technique
Proceedings of the 2004 IEEE/ACM International conference on Computer-aided design
Congestion driven incremental placement algorithm for standard cell layout
ASP-DAC '03 Proceedings of the 2003 Asia and South Pacific Design Automation Conference
Prediction and reduction of routing congestion
Proceedings of the 2006 international symposium on Physical design
Seeing the forest and the trees: Steiner wirelength optimization in placemen
Proceedings of the 2006 international symposium on Physical design
Fast and robust quadratic placement combined with an exact linear net model
Proceedings of the 2006 IEEE/ACM international conference on Computer-aided design
Congestion minimization during placement
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Estimating routing congestion using probabilistic analysis
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Congestion estimation during top-down placement
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Routability-driven white space allocation for fixed-die standard-cell placement
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Implementation and extensibility of an analytic placer
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Abacus: fast legalization of standard cell circuits with minimal movement
Proceedings of the 2008 international symposium on Physical design
Proceedings of the 45th annual Design Automation Conference
Guiding global placement with wire density
Proceedings of the 2008 IEEE/ACM International Conference on Computer-Aided Design
CROP: fast and effective congestion refinement of placement
Proceedings of the 2009 International Conference on Computer-Aided Design
GRPlacer: improving routability and wire-length of global routing with circuit replacement
Proceedings of the 2009 International Conference on Computer-Aided Design
CRISP: congestion reduction by iterated spreading during placement
Proceedings of the 2009 International Conference on Computer-Aided Design
A study of routability estimation and clustering in placement
Proceedings of the 2009 International Conference on Computer-Aided Design
What makes a design difficult to route
Proceedings of the 19th international symposium on Physical design
A SimPLR method for routability-driven placement
Proceedings of the International Conference on Computer-Aided Design
Ripple: an effective routability-driven placer by iterative cell movement
Proceedings of the International Conference on Computer-Aided Design
Routability-driven analytical placement for mixed-size circuit designs
Proceedings of the International Conference on Computer-Aided Design
Congestion analysis for global routing via integer programming
Proceedings of the International Conference on Computer-Aided Design
Mixed integer programming models for detailed placement
Proceedings of the 2012 ACM international symposium on International Symposium on Physical Design
The DAC 2012 routability-driven placement contest and benchmark suite
Proceedings of the 49th Annual Design Automation Conference
Progress and challenges in VLSI placement research
Proceedings of the International Conference on Computer-Aided Design
Planning for local net congestion in global routing
Proceedings of the 2013 ACM international symposium on International symposium on physical design
SRP: simultaneous routing and placement for congestion refinement
Proceedings of the 2013 ACM international symposium on International symposium on physical design
Routability-driven placement for hierarchical mixed-size circuit designs
Proceedings of the 50th Annual Design Automation Conference
Ripple 2.0: high quality routability-driven placement via global router integration
Proceedings of the 50th Annual Design Automation Conference
Routability-constrained multi-bit flip-flop construction for clock power reduction
Integration, the VLSI Journal
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This paper presents a fast and accurate routing demand estimation called RUDY and its efficient integration in a force-directed quadratic placer to optimize placements for routability. RUDY is based on a Rectangular Uniform wire DensitY per net and accurately models the routing demand of a circuit as determined by the wire distribution after final routing. Unlike published routing demand estimation, RUDY depends neither on a bin structure nor on a certain routing model to estimate the behavior of a router. Therefore RUDY is independent of the router. Our fast and robust force-directed quadratic placer is based on a generic demand-and-supply model and is guided by the routing demand estimation RUDY to optimize placements for routability. This yields a placer which simultaneously reduces the routing demand in congested regions and increases the routing supply there. Therefore our placer fully utilizes the potential to optimize the routability. This results in the best published routed wirelength of the IBMv2 benchmark suite until now. In detail, our approach outperforms mPL, ROOSTER, and APlace by 9%, 8%, and 5%, respectively. Compared by the CPU times, which ROOSTER needs to place this benchmark, our routability optimization placer is eight times faster.