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Optimal Joining of Compacted Cells
May 1993 (vol. 42 no. 5)
pp. 597-607

Three algorithms to join two compacted cells by using a combination of stretching and river routing are developed. Each of these obtains the minimum area joining. One algorithm obtains a minimum area joining that also minimizes the length of the longest wire. Another obtains a minimum area joining that has the least possible total wire length. The simplest of the algorithms guarantees only a minimum are joining. All algorithms have a low-order polynomial complexity. Experimental results indicate that the algorithms obtain joinings that are significantly superior to those obtained using the heuristic of G. Cheng and A. Despain (1989).

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Index Terms:
compacted cells; stretching; river routing; minimum area joining; wire length; low-order polynomial complexity; circuit layout CAD; network routing; VLSI.
Citation:
A. Lim, S.-W. Cheng, S. Sahni, "Optimal Joining of Compacted Cells," IEEE Transactions on Computers, vol. 42, no. 5, pp. 597-607, May 1993, doi:10.1109/12.223679
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