Air-pressure-model-based fast algorithms for general floorplan

A new approach for the minimum area floorplanning is proposed where the shape of every module can vary under the constraint of area and floorplan topology. Simulating the air-pressure mechanics, the algorithms iterate to improve the layout to decide the shapes and positions of modules. It is proved that the layout approaches the optimal layout each step by the measure of energy which is defined by the current layout. Experimental results showed very fast convergence. An extension to a more practical case with the aspect-ratio constraint is discussed.