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Re: [Help-glpk] Looking for the documentation of GLPKMex

From: Nazmul Islam
Subject: Re: [Help-glpk] Looking for the documentation of GLPKMex
Date: Wed, 15 Jan 2014 16:17:19 -0500

Hello Heinrich,

Thanks a lot for your help. That was helpful.



On Wed, Jan 15, 2014 at 3:16 PM, Heinrich Schuchardt <address@hidden> wrote:
Hello Nazmul,

please, read the comments on the top of file glpk.m of the glpkmex distribution. Here all parameters available are explained.

Best regards

Heinrich Schuchardt

Nazmul Islam <address@hidden> schrieb:

I am looking for the documentation of GLPKMex. I am using GLPK through Matlab and YALMIP. I am running an MILP program. I want to try different branching options of GLPK ( 

If I were using GNU Math Programming language and running code from cmd, I would have used the following command:

glpsol --first --model example1.mod

But, YALMIP designer, Johan Lofberg, showed me that the YALMIP GLPK option setting looks like the following (one can add more options like --mipgap):

ops = sdpsettings;ops.glpk
    lpsolver: 1
       scale: 1
        dual: 0
       price: 1
       relax: 0.0700
      tolbnd: 1.0000e-07
       toldj: 1.0000e-07
      tolpiv: 1.0000e-09
       round: 0
       objll: -1.0000e+12
       objul: 1.0000e+12
       itlim: 10000
       tmlim: -1
      branch: 2
      btrack: 2
      tolint: 1.0000e-06
      tolobj: 1.0000e-07
      presol: 1
        save: 0

I want to try different values of the branch option but I don't know which particular option (i.e. branching using first/last/most fractional variable) glpk.branch = 2 refers to. It might be related to GLPKMex. Hence, I am looking for the documentation of GLPKMex. Any suggestions?


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