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[Help-glpk] Re: Iterations with GLPK


From: Xypron
Subject: [Help-glpk] Re: Iterations with GLPK
Date: Wed, 12 May 2010 08:28:36 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.9) Gecko/20100317 SeaMonkey/2.0.4

It is unclear what you mean by iteration:
a step in the simplex algorithm or
a branching step in solving a mixed integer problem.

Steps of the simplex method can only be monitored when the library code is modified. Branching steps in solving a mixed integer problem can be monitored by implementing a callback function. This requires using GLPK as a library and not using the standalone solver glpsol. Details of the library functions are described in doc/glpk.pdf of the source distribution of GLPK.

Best regards

Xypron

Silvestre Ramirez wrote:
I want to see the value of basic variables in each iteration.
What parameters or should I do to know

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