Titlebook: VLSI Placement and Global Routing Using Simulated Annealing; Carl Sechen Book 1988 Kluwer Academic Publishers, Boston 1988 Modulation.Phas

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安心地散步

Average Interconnection Length Estimation,rithms developed in the next chapter for accurately estimating interconnect . require a good estimate of the . total interconnect length. The final total interconnect length is determined by the macro/custom cell placement algorithm which was presented in the previous chapter. This placement algorit

GORGE

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An Edge-Based Channel Definition Algorithm for Rectilinear Cells,ticularly well suited for channel definition just prior to placement refinement. Furthermore, the algorithm may be employed as a basic channel definer just prior to the execution of global and then detailed routers.

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A Graph-Based Global Router Algorithm, of the routing order of nets, a common limitation among previous algorithms. The global router is independent of the layout style since the only inputs to the algorithm are a net list and a channel graph (such as that generated by the algorithm of Chapter 7). In the input to the global router, each

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Book 1988tronics. I made the decision to switch to computer-aided design (CAD) in 1981, only a year or so prior to the introduction of the simulated annealing algorithm by Scott Kirkpatrick, Dan Gelatt, and Mario Vecchi of the IBM Thomas 1. Watson Research Center. Because Prof. Alberto Sangiovanni-Vincentell

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Average Interconnection Length Estimation, executing the placement algorithm twice, once for ascertaining the final total interconnect length and the second for obtaining the final placement using the interconnect-area estimator, is unreasonable.

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A Graph-Based Global Router Algorithm,r makes full use of equivalent pins to minimize the routing length of a net. The global router minimizes the sum of the routing lengths of all of the nets subject to the satisfaction of the . of the edges. The constraints result from the fixed widths of the channel edges.