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[Help-glpk] glpk49vb

From: address@hidden
Subject: [Help-glpk] glpk49vb
Date: Tue, 25 Jul 2006 11:41:07 +1000

I am have been using the VB implementation of GLPK for quite a while and I am 
having  the following problem. I write a problem in cplex format and load the 
file as follows.
        ' load the problem from file 
        lp = glpk_read_cpxlp(sPath) 
        ' Find Simplex solution 
        lRet = glpk_simplex(lp) 
        Print "GLPK SIMPLEX: " & lRet 
        ' Find MIP solution 
        lRet = glpk_integer(lp) 
        Print "GLPK INTEGER: " & lRet 
the glpk_integer returns an error of 204 - cannot start search. 
but if I use glpsol.exe to test the formualtion it finds a mip solution in less 
than a 
second. So I am confident that the formulation is ok and that a mip solution 
Has anyone got any ideas as to why the VB implemtation is returning an error 
when glpsol.exe can find a solution with the same formulation. 

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