Re: [Help-glpk] writing values of variables to log file every iteration

Tue, 14 Nov 2017 06:31:49 -0800

Hello Wilko,

you will need some programming.

If by iteration you refer to tbe branch and bound for MIPs implement a callback function.

If you refer to Simplex iterations you will have to modify the coding of the GLPK library.

Regards

Heinrich
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Am 14.11.17, 15:25, wilko heitkoetter <[email protected]> schrieb:
Dear Developers,
 
I am a PhD student at University of Oldenburg (Germany). For troubleshooting, I would like GLPK to do the following, while solving an optimization problem:
 
For every iteration, the values that are assigned to the variables of the optimization problem at the respective iteration, shall be written to the log file.
 
Would this be possible? If yes, which option would I have to pass to the solver?
 
 
Already checked out the documentation and mailing list, but didnt find an answer.
 
I would be very grateful for an advise.
 
 
Best regards

Wilko Heitkoetter
 
 
 
 
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