choice of the solver, from an external program

Hello,

I am trying to call GAMS from another software (Vensim), but it won’t execute the computation because the solver it uses is only in a demo version (DICOPT, for MINLP problems), whereas I would like to use another solver (Couenne for example)… it keeps reverting back to DICOPT even after trying to set the options in GAMS before… (the “system defaults” seem to be what is crucial).

Thank you in advance for your help !
J.


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Hi Jacques !

What about specifying the solver in the .gms ? can you tamper into it ?

You should be able to do that by writing into it the following line:
“Option _____= COUENNE” (without the "),
where ___ should be replaced by your type of problem.

Regards
Claudio

On Tue, Jan 28, 2014 at 2:05 PM, Jacques wrote:

Hello,

I am trying to call GAMS from another software (Vensim), but it won’t
execute the computation because the solver it uses is only in a demo version
(DICOPT, for MINLP problems), whereas I would like to use another solver
(Couenne for example)… it keeps reverting back to DICOPT even after trying
to set the options in GAMS before… (the “system defaults” seem to be what
is crucial).

Thank you in advance for your help !
J.


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