AMPL output saving

[Md. Noor-E- Alam]

Hi All:

 

I am using AMPL/CPLEX to run my model.I want to save the number of branch-and-bound nodes, cuts and total number of simplex iterations in a text file. I am wandering is there any print option available in AMPL to save the output appears in command prompt including those stat.

 

Best Regards

 

Noor

 

[victor.z...@gmail.com]

You can redirect the solver output to a file as follows:

   solve > out;

where 'out' is the filename which you can change.

Also there is a solver message from the solution file which is reported using different means. For CPLEX it looks like 

  CPLEX 12.2.0.0: optimal solution; objective 42

  0 dual simplex iterations (0 in phase I)

It is stored in the solve_message parameter and can be printed to a file as well:

  print solve_message >> out;

Then you can parse the file containing the solver (CPLEX) output to extract all necessary information.

HTH,

Victor 

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