An augmented Lagrangian method for VLSI global placement
An augmented Lagrangian method for VLSI global placement
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VLSI全局布局的增强拉格朗日方法
DOI:
10.1007/s11227-014-1113-1
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发表时间:
2014-08
期刊:
影响因子:
--
通讯作者:
Weiguo Li
中科院分区:
文献类型:
--
作者:
Wenxing Zhu;Jianli Chen;Weiguo Li
By ignoring some cell overlaps, global placement computes the best position for each cell to minimize the wirelength. It is an important stage in very large scale integration (VLSI) physical design, since circuit performance heavily depends on the placement results. In this paper, we propose an augmented Lagrangian method to solve the VLSI global placement problem. In the proposed method, a cautious dynamic density weight strategy is used to balance the wirelength objective and the density constraints, and an adaptive step size is used to obtain a trade-off between runtime and solution quality. The proposed method is tested on the IBM mixed-size benchmarks and the International Symposium on Physical Design 2006 placement contest benchmarks. Experimental results show that our global placement method outperforms the state-of-the-art placement approaches in terms of solution quality on most of the benchmarks.
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DOI:
10.1145/1123008.1123055
发表时间:
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期刊:
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影响因子:
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期刊:
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DOI:
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发表时间:
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期刊:
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影响因子:
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DOI:
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发表时间:
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期刊:
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影响因子:
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