Re: [Help-glpk] Sets of ordered pairs: Differences between AMPL and GNU MathProg

[Andrew Makhorin]

Xypron,

> 64bit Windows Server 2003 with the 64bit glpsol executable available as
> http://downloads.sourceforge.net/winglpk/glpsol-4.33_64bit.zip?modtime=1225755338&big_mirror=0
> glpsol-4.33_64bit.zip  at
> http://winglpk.sourceforge.net http://winglpk.sourceforge.net 
> also gives:
> Minimize
>  z: + X(1,b2) + 2 X(1,b3) + X(1,b5)

Thank you for testing.

Peter reports:

> AMPL generates:
> 
> MIN   X[1,b2] + 2 X[1,b3] + X[1,b5] 
> 
> MathProg generates:
> 
> MIN   5 X[1,b2] + 5 X[1,b3] + 5 X[1,b5] 

However glpk has no routine that could produce the output above.
Probably there is something wrong out of glpk.