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An efficient algorithm for VLSI network partitioning problem using a cost function with balancing factor

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2 Author(s)
Chan-Ik Park ; Dept. of Comput. Sci., Pohang Inst. of Sci. & Technol., South Korea ; Yun-Bo Park

This paper presents an efficient algorithm for network partitioning problem, which improves Fiduccia and Mattheyses' (F-M's) algorithm (1982). We have noticed that the main problem of F-M's algorithm is that the cell move operation is largely influenced by the balancing constraint. In order to handle this kind of inherent limitation in F-M's algorithm, a cost function is adopted which reflects balance degree of a partition as well as its cutset size. The weighting factor R is introduced in the cost function to determine the relative importance of the two factors: cutset size and balance degree. Using this cost function, we propose an iterative improvement algorithm which has the time complexity of O(b(m+c2)), where b is the number of blocks, m is the size of network, and c is the number of cells. It is proven that the proposed algorithm guarantees to find a balanced partition if the value of R satisfies a certain condition. Experimental results show that the proposed algorithm outperforms F-M's algorithm in most cases

Published in:

Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on  (Volume:12 ,  Issue: 11 )

Date of Publication:

Nov 1993

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