This chapter is focused on NTUplace3 [6], a large-scale mixed-size analytical placer that can handle modern placement considerations such as wirelength, preplaced blocks, and density. Like many modern placers, NTUplace3 consists of three major stages: global placement, legalization, and detailed placement. Global placement evenly distributes blocks and finds the best position for each block to minimize the target cost (e.g., wirelength). Then, legalization removes all overlaps among blocks and places standard cells row by row. Detailed placement further refines the solution.
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Chen, TC., Jiang, ZW., Hsu, TC., Chen, HC., Chang, YW. (2007). NTUplace3: An Analytical Placer for Large-Scale Mixed-Size Designs. In: Nam, GJ., Cong, J. (eds) Modern Circuit Placement. Series on Integrated Circuits and Systems. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-68739-1_11
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