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Compact Floor-Planning via Orderly Spanning Trees

Chien-Chih Liao·Hsueh-I Lu·Hsu-Chun Yen
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Abstract

Floor-planning is a fundamental step in VLSI chip design. Based upon the concept of orderly spanning trees, we present a simple O(n)-time algorithm to construct a floor-plan for any n-node plane triangulation. In comparison with previous floor-planning algorithms in the literature, our solution is not only simpler in the algorithm itself, but also produces floor-plans which require fewer module types. An equally important aspect of our new algorithm lies in its ability to fit the floor-plan area in a rectangle of size (n-1)x(2n+1)/3. Lower bounds on the worst-case area for floor-planning any plane triangulation are also provided in the paper.

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Chien-Chih Liao, Hsueh-I Lu, Hsu-Chun Yen. 2003-05-04. Compact Floor-Planning via Orderly Spanning Trees. https://doi.org/10.1016/s0196-6774(03)00057-9

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