Originally posted by: SystemAdmin

[tuong said:]

Hello,
I'm using the licenced version of AMPLCML with CPLEX10 solver on Windows
XP to find the symmetric augmentation of  a state machine. Things are
OK when the number of states is small, say up to 50. However, AMPL
seems running forever when the number of states is 1000. Any
experiences/suggestions about that? Thank you so much.


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Originally posted by: SystemAdmin

[arunjotshi said:]

In my limited experience with CPLEX, I find CPLEX 10.0 to be pretty reasonable w.r.t. time (even better than CPLEX 11.0 !). May be you should try changing some default parameters to speed up your case. All will depend on your problem structure, the parameters that have been set up and your preferences.
For example, setting MIPEMPHASIS to find feasible solutions rather than Optimality might spped up things a bit.
Hope this helps.
Arun
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