[Couenne] cannot get .sol file

[Pietro Belotti]

Dear Zeynep,

although the file has .nl extension, it is not in the format required
by Couenne but it is an AMPL source file (it should have extension
.mod). Neos accepts it because it can read AMPL source files. If you
have an AMPL license, you can rename the file to example.mod, then run
AMPL and issue the following commands:

model example.mod
write gexample;
exit;

After this, there will be a file example.nl in the correct format for
Couenne. Note the semicolon after the commands.

Regards,
Pietro


On Tue, Sep 22, 2015 at 7:02 PM, Zeynep Erkin <zeyneperkin at gmail.com> wrote:
> Hello.
>
> I'm new to Couenne and having trouble with getting the .sol file. I believe
> my installation has no problem as 'make unitTests' work fine. When I solve a
> small problem, which is attached, on command line with 'couenne
> example2.nl', I get the following message:
>
> .......:bin ......$ couenne example2.nl
>
> Couenne 0.5.5 -- an Open-Source solver for Mixed Integer Nonlinear
> Optimization
>
> Mailing list: couenne at list.coin-or.org
>
> Instructions: http://www.coin-or.org/Couenne
>
> couenne: jacdim: got M = 0, N = 0, NO = 0
>
> Does this mean that there is a problem with the format of example2.nl - no
> columns, no rows? When I feed the same problem to the NEOS server
> (http://www.neos-server.org/neos/solvers/minco:Couenne/AMPL.html) I'm able
> to get an output. Could you please help?
>
> Thanks,
>
> Zeynep
>
> _______________________________________________
> Couenne mailing list
> Couenne at list.coin-or.org
> http://list.coin-or.org/mailman/listinfo/couenne