<div dir="ltr">Thanks, Pietro.<br><br></div><br><div class="gmail_quote">On Wed, May 27, 2015 at 2:07 AM Pietro Belotti <<a href="mailto:petr.7b6@gmail.com">petr.7b6@gmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Victor,<br>
<br>
the output level you see is mostly related to CLP/CBC and is due to<br>
the default settings of a few options in Couenne. To turn off most<br>
output, the following options must be specified in a text file named<br>
couenne.opt that is in the same directory from which Couenne is<br>
launched:<br>
<br>
output_level 0<br>
<br>
bb_log_level 0<br>
lp_log_level 0<br>
nlp_log_level 0<br>
<br>
The default values in trunk/ are now 2 for output_level, 1 for<br>
bb_log_level, and 0 for the remaining two. The outlev option is not<br>
used by Couenne and I doubt that Couenne reads options through the<br>
AMPL command "option".<br>
<br>
I hope this helps.<br>
Pietro<br>
<br>
<br>
On Wed, May 27, 2015 at 12:43 AM, <a href="mailto:victor.zverovich@gmail.com" target="_blank">victor.zverovich@gmail.com</a><br>
<<a href="mailto:victor.zverovich@gmail.com" target="_blank">victor.zverovich@gmail.com</a>> wrote:<br>
> Hello,<br>
><br>
> I've noticed that Couenne produces a lot of output on verbosity level 0<br>
> (outlev=0). For example:<br>
><br>
> ampl: model 3pk.mod;<br>
> ampl: option solver couenne;<br>
> ampl: option solver_options 'outlev=0';<br>
> ampl: solve;<br>
> Couenne 0.5.3 -- an Open-Source solver for Mixed Integer Nonlinear<br>
> Optimization<br>
> Mailing list: <a href="mailto:couenne@list.coin-or.org" target="_blank">couenne@list.coin-or.org</a><br>
> Instructions: <a href="http://www.coin-or.org/Couenne" target="_blank">http://www.coin-or.org/Couenne</a><br>
> couenne:<br>
> ANALYSIS TEST: Couenne: new cutoff value 2.0236538579e+04 (0.010316 seconds)<br>
> NLP0012I<br>
> Num Status Obj It time<br>
> Location<br>
> NLP0014I 1 OPT 1.7201186 10 0.004382<br>
> Couenne: new cutoff value 1.7201185696e+00 (0.018883 seconds)<br>
> Loaded instance "/tmp/<a href="http://at4272.nl" target="_blank">at4272.nl</a>"<br>
> Constraints: 0<br>
> Variables: 30 (0 integer)<br>
> Auxiliaries: 85 (0 integer)<br>
><br>
> Coin0506I Presolve 234 (-15) rows, 100 (-15) columns and 638 (-30) elements<br>
> Clp0006I 0 Obj 0.057685049 Primal inf 199.91031 (115)<br>
> ...<br>
><br>
> Normally outlev=0 disables all the solver output except for solve and error<br>
> messages:<br>
><br>
> ampl: option solver minos;<br>
> ampl: solve;<br>
> MINOS 5.51: optimal solution found.<br>
> 0 iterations, objective 1.72011857<br>
> Nonlin evals: obj = 3, grad = 2.<br>
><br>
> It would be nice if Couenne followed the same convention.<br>
><br>
> Thanks,<br>
> Victor<br>
><br>
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</blockquote></div>