IR drop prediction of ECO-revised circuits using machine learning
IR drop prediction of ECO-revised circuits using machine learning
复制标题
使用机器学习对 ECO 修订电路进行 IR 压降预测
DOI:
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发表时间:
2018
期刊:
影响因子:
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通讯作者:
Eric Jia
中科院分区:
文献类型:
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作者:
Shih;Yen;Yu;Yu;Tsung;Shang;C. Li;Eric Jia
Excessive power supply noise (PSN), such as IR drop, can cause timing violation in VLSI chips. However, simulation PSN takes a very long time, especially when multiple iterations are needed in IR drop signoff. In this work, we propose a machine learning technique to build an IR drop prediction model based on circuits before ECO (engineer change order) revision. After revision, we can re-use this model to predict the IR drop of the revised circuit. Because the previous circuit(s) and the revised circuit are very similar, the model can be applied with small error. We proposed seven feature extractions, which are simple and scalable for large designs. Our experiment results show that prediction accuracy (average error 3.7mV) and correlation (0.55) are very high for a three million-gate real design. The run time speedup is up to 30X. The proposed method is very useful for designers to save the simulation time when fixing the IR drop problem.