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This paper studies the effects of clustering as a pre-processing step and routability estimation in the placement flow. The study shows that when clustering and routability estimation are considered, the placer effectively improves the routed wirelength for the circuits of IBM-PLACE 2.0 standard-cell Benchmark Suite and results in the best average routed wirelength when compared against state-of-the-art...
This paper presents an efficient technique for the estimation of the routed wirelength during global placement using the wire density of the net. The proposed method identifies congested regions of the chip and incorporates the model of the routed wirelength into the objective function in order to effectively alleviate these regions from congestion. The method is integrated in the analytical placement...
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