Converting MathProg (and AMPL) models to GAMS

The tool glpk2gams can convert models written in MathProg (subset of AMPL) so we can quickly assess how GAMS solvers perform on such a model.

If the model only has a .mod file, you can just use a single argument:

D:\glpk\glpk2gams\Debug>glpk2gams.exe diet.mod
Glpk Model filename: diet.mod
Gams filename: diet.gms
  
Reading model section from diet.mod...
Reading data section from diet.mod...
99 lines were read
Generating nb...
Generating cost...
Model has been successfully generated
  
Rows : 10  Columns : 20  Nonzero elements : 179
Writing diet.gms
  
D:\glpk\glpk2gams\Debug>

If the model also has a .dat file, you need to give all three command line arguments:

L:\glpk>glpk2gams egypt2.mod egypt2.gms egypt2.dat
Glpk Model filename: egypt2.mod
Gams filename: egypt2.gms
Data filename: egypt2.dat
 
Reading model section from egypt2.mod...
egypt2.mod:264: warning: unexpected end of file; missing end statement inserted
264 lines were read
Reading data section from egypt2.dat...
egypt2.dat:276: warning: unexpected end of file; missing end statement inserted
276 lines were read
Generating Psi...
Generating mbd...
Generating mbdb...
Generating mb...
Generating cc...
Generating ap...
Generating al...
Generating ai...
Model has been successfully generated
  
Rows : 285  Columns : 351  Nonzero elements : 1336
Writing egypt2.gms
 
L:\glpk>

It is generating scalar GAMS code, so this is not suited to convert models that have to be maintained in GAMS.