A Size Scaling Approach for Mixed-size Placement

We propose a global placement algorithm that employs size scaling of circuit components to provide continuity during placement. In the context of mixed-size placement, size scaling is utilized to handle significant variations among the sizes of the components, thereby avoiding additional complexity that is often associated with multiple levels of smoothing. By using the optimal region approach to first determine an initial placement, the size scaling approach allows the global placement algorithm to converge to better placement solutions.