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Optimal cell flipping in placement and floorplanning
2006
Proceedings - Design Automation Conference
In a placed circuit, there are a lot of movable cells that can be flipped to further reduce the total wirelength, without affecting the original placement solution. We aim at solving this flipping problem optimally. However, solving such a problem optimally is non-trivial given the gigantic sizes of modern circuits. We are able to identify a large portion of cells (about 75%) of which the orientation (flipped or not flipped) can be determined independent of the orientations of all the other
doi:10.1109/dac.2006.229406
fatcat:aq56i5u6bzf2rguigmzbo3g4ve