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80 CHAPTER 2. COMBINATIONAL DESIGN EXAMPLES
We place the design using the following command (the output has been shorthened to make it fit).
% make multi4_p.ap
/usr/local/alliance/bin/ocp -v -gnuplot -ioc multi4 multi4 multi4_p
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Placer for Standards Cells
Alliance CAD System 5.0 20040928, ocp 5.0
Copyright (c) 2001-2005, ASIM/LIP6/UPMC
o ALLIANCE environment:
o ALLIANCE_TOP : /usr/local/alliance
o MBK environment:
o MBK_IN_LO : vst
...
o MBK_CATA_LIB : .
/usr/local/alliance/cells/sxlib
...
o Special Net detected : vss
o Special Net detected : vdd
o Number total of instances is .... 151
o Number of instances to place is .... 151
o Number of instances already placed is .... 0
o Number of nets is .... 159
o Computing Initial Placement ...
o User Margin : 0.2
o Number of Rows : 10
o Width of the abutment box : 108
o Height of the abutment box : 100
o conspace : 13.5 1st connector : 6.75
o conspace : 13.5 1st connector : 6.75
o Initial Placement Computing ... done.
o Beginning global placement ....
o Initial RowCost = 73.6
o Initial BinCost = 88
o Initial NetCost = 14396
o Initial Cost = 1
o Computing Initial Temperature ...
Loop = 1, Temperature = 0.351534, Co st = 1.0917
RowCost = 65.2, BinCost = 156, NetCos t = 14861
Success Ratio = 99.4941%, Dist = 1, Delta = 0.5
...
Loop = 49, Temperature = 5.62198e-05, Cost = 0.552694
RowCost = 34, BinCost = 60, NetCost = 7887.5
Success Ratio = 1.872%, Dist = 0.1, Delta = 0.590525
o Global Placement finished .....
o Gain for RowCost = 53.8043%
o Gain for BinCost = 31.8182%
o Gain for NetCost = 45.2105%
o NetCost Estimated = 7887.5
o Final Optimization in process ...
o Net Cost before Final Optimization... 8405.5
o Final Optimization succeeded ...
o Final Net Cost ..... 6358.5
o Final Net Cost Optimization ..... 24.3531%
o Total Net Optimization .... 55.8315%
Ocp : placement finished
gnuplot files created - in order to use them, please type :
..
gnuplot view.gpl
NO PREPLACEMENT GIVEN
o Destruction of DATABASE ....
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