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Pattern-Based Iterative Method for Extreme Large Power/Ground Analysis

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5 Author(s)
Jin Shi ; Comput. Sci. Dept., Tsinghua Univ., Beijing ; Yici Cai ; Tan, S.X.-D. ; Fan, J.
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In this paper, we present a novel pattern-based method to simulate large-scaled power/ground (P/G) grids. This method takes advantage of both traditional direct simulation methods and iterative simulation methods. The new method explores the geometry characteristics of regular P/G grids and translates topology similarity to submatrix regularity, which is called "pattern" in this paper. Such pattern structures can reduce the memory usage dramatically. Further, a new type of preconditioner is constructed to optimize the simulation process. Experimental results show that the proposed approach is about 5times faster than the previous iterative methods with much lower memory, and is superior to the macro model-based hierarchical method on the tested large cases with pattern structures

Published in:

Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on  (Volume:26 ,  Issue: 4 )

Date of Publication:

April 2007

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