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A new method for floor planning using topological constraint reduction

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2 Author(s)
Vijayan, G. ; IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA ; Ren-Song Tsay

An approach to the constraint-based floor planning of flexible, fixed, and preplaced blocks that is based on the removal of redundant constraints and the reshaping of flexible blocks is discussed. A floor plan is said to respect a given constraint set if is satisfies either a vertical or a horizontal constraint in the set for each pair of blocks. The approach presented is to construct a floor plan of optimal area that respects the input constraint set, which is assumed to be derived from a relative placement of the blocks. Reasons for considering this method are delineated, and a heuristic floor-planning algorithm based on constraint reduction and block reshaping is given. A simple example illustrates the algorithm. Several real floor-planning examples are also given

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Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on  (Volume:10 ,  Issue: 12 )