A new partitioningapproach for very largecircuits is described. We demonstrate that applying a recently developed analytical placement algorithm, that prots from a linear objective function, signicantly improves the partitioning quality compared to the well-known eigenvector approach, which minimizes a quadratic objective function. For the rst time, results of benchmark circuits with up to 100,000 cells are presented. The cutsize and the minimum ratio cut is improved up to 90%. The average improvement is about 50%.
Bernhard M. Riess, Konrad Doll, Frank M. Johannes