[Couenne] Couenne produces a lot of output on verbosity level 0

[victor.zverovich at gmail.com]

Thanks, Pietro.


On Wed, May 27, 2015 at 2:07 AM Pietro Belotti <petr.7b6 at gmail.com> wrote:

> Hi Victor,
>
> the output level you see is mostly related to CLP/CBC and is due to
> the default settings of a few options in Couenne. To turn off most
> output, the following options must be specified in a text file named
> couenne.opt that is in the same directory from which Couenne is
> launched:
>
> output_level 0
>
> bb_log_level 0
> lp_log_level 0
> nlp_log_level 0
>
> The default values in trunk/ are now 2 for output_level, 1 for
> bb_log_level, and 0 for the remaining two. The outlev option is not
> used by Couenne and I doubt that Couenne reads options through the
> AMPL command "option".
>
> I hope this helps.
> Pietro
>
>
> On Wed, May 27, 2015 at 12:43 AM, victor.zverovich at gmail.com
> <victor.zverovich at gmail.com> wrote:
> > Hello,
> >
> > I've noticed that Couenne produces a lot of output on verbosity level 0
> > (outlev=0). For example:
> >
> > ampl: model 3pk.mod;
> > ampl: option solver couenne;
> > ampl: option solver_options 'outlev=0';
> > ampl: solve;
> > Couenne 0.5.3 -- 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:
> > ANALYSIS TEST: Couenne: new cutoff value 2.0236538579e+04 (0.010316
> seconds)
> > NLP0012I
> >               Num      Status      Obj             It       time
> > Location
> > NLP0014I             1         OPT 1.7201186       10 0.004382
> > Couenne: new cutoff value 1.7201185696e+00 (0.018883 seconds)
> > Loaded instance "/tmp/at4272.nl"
> > Constraints:            0
> > Variables:             30 (0 integer)
> > Auxiliaries:           85 (0 integer)
> >
> > Coin0506I Presolve 234 (-15) rows, 100 (-15) columns and 638 (-30)
> elements
> > Clp0006I 0  Obj 0.057685049 Primal inf 199.91031 (115)
> > ...
> >
> > Normally outlev=0 disables all the solver output except for solve and
> error
> > messages:
> >
> > ampl: option solver minos;
> > ampl: solve;
> > MINOS 5.51: optimal solution found.
> > 0 iterations, objective 1.72011857
> > Nonlin evals: obj = 3, grad = 2.
> >
> > It would be nice if Couenne followed the same convention.
> >
> > Thanks,
> > Victor
> >
> > _______________________________________________
> > Couenne mailing list
> > Couenne at list.coin-or.org
> > http://list.coin-or.org/mailman/listinfo/couenne
>
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