[Couenne] Run file couenne-ampl and option time_limit

[Mamadou KONE]

Hello,


I have pretty big MINLP problem that I solve on Couenne using AMPL


The problem is that the problem runs for number of hours.


I wonder if it is possible to do either of the following:


1. After the problem breaks, have results displayed (run the command file), that might not be optimal, but seeing current primal value, it is good enough for me.


2. Have solver to stop and have the results displayed after primal value had reached certain desired value


3. Have a solver to display intermediate (current) variable values every x minutes (that one would be a perfect solution for me)


4. Have a time limit after which the solver stops and current solution

is displayed.


5. well I used:


option couenne_options "time_limit =x";


However, this manner don´t work.



Thanks for you.

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