Keynote talk by Dr. Albert Zomaya: Environmentally sustainable large scale distributed systems

Summary form only given. Half perimeter wire length estimation is commonly used to guide placers in positioning cells. In this paper, the shortcomings of HPWL and other post placement wire length estimation methods are presented first. It is shown that these estimations are even more inaccurate when congestion exists. Techniques to improve the accuracy of estimation are proposed. In addition, the hidden costs are discussed when performing placement with a complete 2D view, where routes are actually made in 3D. Techniques to reduce the hidden costs are proposed. Finally, a few problems arise during the formulation of global routing because of using bin boxes and methods to avoid these problems are discussed.