[Scilab-users] fmincon won't work

[anastasia athanasiou]

Hello everyone,

it is true, I couldn't produce any meaningful results using /fmincon/ in 
Scilab 5.4.1, while the module worked perfectly in the previous version 
(Scilab 5-3.3).
However, running the nonlinear constrained optimization problem in 
Scilab proved  rather slow.
Scilab required the triple time for the solution of the  program with 
respect to Matlab.
At this point I should add that I was very careful to use the same 
optimset in both Scilab and Matlab runs.

Does anyone have any experience in /fmincon/ time performance in Scilab?

PS. Stéphane, is the fsqp toolbox accessible to all Scilab users?

Thank you for your attention, Natasha

On 26/02/2014 20:25, "Stéphane Mottelet (UTC)" wrote:
> Hello,
>
> Currently, sci_ipopt seems to be broken on Linux and MacOSX when using 
> the atoms package for Scilab 5.4.1. Since fmincon relies on sci_ipot, 
> fmicon is equally broken... BTW, users needing an optimization toolbox 
> with general non-linear constraints are not lucky with Scilab. As far 
> as I am concerned, I still use fsqp, which cannot be easily released 
> as an Atoms module because of proprietary code. But Ipopt is said to 
> really outperform fsqp, so I am rather impatient to see it coming.
>
> As it is the only module of this class/kind (optimization + 
> complementary module), the Scilab team should take care of the 
> functionnality of it when new versions of Scilab are released.
>
> Stéphane
>
>
> Le 26/02/2014 20:13, Stéphane Mottelet a écrit :
>>
>>
>> ---------- Forwarded message ----------
>> From: *Paul Bignier* <paul.bignier at scilab-enterprises.com 
>> <mailto:paul.bignier at scilab-enterprises.com>>
>> Date: 2014-02-26 16:46 GMT+01:00
>> Subject: Re: [Scilab-users] fmincon won't work
>> To: athanasiou at dica.unict.it <mailto:athanasiou at dica.unict.it>, 
>> "International users mailing list for Scilab." 
>> <users at lists.scilab.org <mailto:users at lists.scilab.org>>
>>
>>
>>
>> Hello,
>>
>> Did you check that your problem matched the cases described on 
>> fmincon home page <http://atoms.scilab.org/toolboxes/fmincon>?
>>
>> Regards,
>> Paul
>>
>>
>>
>> On 02/26/2014 04:13 PM, Anastasia Athanasiou wrote:
>>> Hello everyone! I am a new Scilab 5.4.1 user (in Ubuntu 12.04.4).
>>> I installed fmincon 0.3.1-1 using atoms, but when I tried it on the first
>>> help example I obtained a rather weird output:
>>>
>>> fval  =    0.
>>>
>>> x  = 10^(-318) *    Inf    Inf
>>>
>>> Could anyone help me please?
>>>
>>> Thank you in advance, Natasha
>>>
>>> _______________________________________________
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>>> http://lists.scilab.org/mailman/listinfo/users
>>
>> -- 
>> Paul BIGNIER
>> Development engineer
>> -----------------------------------------------------------
>> Scilab Enterprises
>> 143bis rue Yves Le Coz - 78000 Versailles, France
>> Phone:+33.1.80.77.04.69  <tel:%2B33.1.80.77.04.69>
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>>
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>
>
>
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