Worst-case wire length reduction for nets with large fan-out

Design Longest wirelength (2-D) Longest wirelength (2.5-D) Reduction 

Since the nets with large fan-out number will shrink by a constant factor and do not affect system performance directly, we only consider nets with less than 15 pins in the following discussion. In the results reported in the rest of this paper, 

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Table 6.2 Worst-case wire length reduction for nets with large fan-out...

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