Hi,
These problems are now fixed in version 1.3.1. For the Windows version,
if the update of libifcoremd.dll is necessary, the writeability of
SCI/bin is tested in order to run the update script with admin rights
only if needed.
S.
Le 07/06/2021 à 10:01, Clément David a écrit :
Hello all,
I try to install to check fmincon to check on my machine and give you
a fresh eye on the basic install/usage. I have a few remarks:
1. My Scilab and all atoms packages are installed in user directories
but the library check at startup on sci_ipopt ask for
administrator access to update. That’s a pity to require that.
2. The message “This program contains Ipopt, a library for
large-scale nonlinear optimization.” looks strange to me, this
function is named ipopt and I think the references are written in
the documentation and on the DESCRIPTION file. There is no need to
display that at runtime.
Otherwise basic examples are running even if it change the toolbox
loading order (sci_ipopt after fmincon, scicolpack after sci_ipopt, etc…).
Clément
*From:*users <users-boun...@lists.scilab.org> *On Behalf Of *CHEZE
David 227480
*Sent:* Monday, June 7, 2021 9:20 AM
*To:* Users mailing list for Scilab <users@lists.scilab.org>
*Subject:* Re: [Scilab-users] fmincon toolbox update
Hi all,
I installed both SciPOpt and fmincon from ATOMS on Scilab 6.1.0
WIN10-64bits, a few weeks ago and the demos are running properly. I
had some minor dependencies issues while installing, I don’t remember
exactly , probably the SciIPopt version was not aligned with the one
required by fmincon.
My 2 cents
David
*De :*users <users-boun...@lists.scilab.org> *De la part de* Stéphane
Mottelet
*Envoyé :* samedi 5 juin 2021 22:17
*À :* Users mailing list for Scilab <users@lists.scilab.org>
*Objet :* Re: [Scilab-users] fmincon toolbox update
May I ask if there are there some Windows users who read this post and
who successfully installed sci_ipopt or fmincon ?
S.
Le 5 juin 2021 à 15:21, Éric Dubois <grocer.tool...@gmail.com
<mailto:grocer.tool...@gmail.com>> a écrit :
Thanks Stéphane for your quick answer
I have tried installing fmincon first, then scicolpack (it works),
then sci_ipopt and it does not work: only
file sci_ipopt_1.3.bin.x64.Windows.zipis downloaded. So it seems:
- first that dependencies are not deal with for the fmincon
distribution that Atoms uses;
- second, that there is some problem using Atoms for loading
sci_ipopt
Maybe I should not use Atoms, but when it works it is the most
convenient way to download a module.
Éric
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Le sam. 5 juin 2021 à 14:06, Stéphane Mottelet
<stephane.motte...@utc.fr <mailto:stephane.motte...@utc.fr>> a écrit :
Hi Eric,
Could you be more precise ? I have I installed fmincon on at
least 10 different machines for testing purposes (mostly
under Windows 10) and did not encounter any problem. Atoms is,
I must say, a very unstable (not to say crappy) piece of
software and in particular very hard to use smoothly when your
are developing some modules and play e.g. with offline mode.
What I would do first is to uninstall every module then
install fmincon. If problem is still here please help me by
debugging a bit...
S.
Le 5 juin 2021 à 11:29, Éric Dubois
<grocer.tool...@gmail.com
<mailto:grocer.tool...@gmail.com>> a écrit :
Hello Stéphane
This seems very interesting, but download through Atoms
does not work (at least for me: I use Scilab 6.1.0 under
Windows 10): dependencies (Sci-colpac, Sci-IPOt, for those
I have noticed) are not dealt with. Moreover, trying to
install Sci-IPOt with Atoms fails. By the way it makes
also make fail lthe oading of any module that could have
been installed with Atoms, which reveals an undesirable
feature of Atoms: failure to load a module should not
prevent the loading of other ones.
Best regards,
Éric
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Le mar. 1 juin 2021 à 12:21, Stéphane Mottelet
<stephane.motte...@utc.fr
<mailto:stephane.motte...@utc.fr>> a écrit :
Hi,
Le 01/06/2021 à 09:53, CHEZE David 227480 a écrit :
> Dear Stephane,
>
> Thank you for offering these enhanced capabilities
in Scilab, fmincon and SciIPOpt. I'm about giving a
try in comparison with leastsq(), on dynamic model
parameter (~5-10) calibration purpose, based on
measurement deviation, as time series (250 to >1000
samples). In general for fmincon and SciIPOpt, may I
provide the objective function with inputs argument
through the list() syntax like
objf=list(myofunction,x,in1,in2,..) ?
Yes, you have such an example in the fitting demo ;
https://gitlab.com/esi-group/scilab/forge/fmincont/-/blob/master/demos/fmincon_fit.sce
<https://gitlab.com/esi-group/scilab/forge/fmincont/-/blob/master/demos/fmincon_fit.sce>
S.
>
> Thank you for your advice,
>
> David
>
>
> -----Message d'origine-----
> De : users <users-boun...@lists.scilab.org
<mailto:users-boun...@lists.scilab.org>> De la part de
Stéphane Mottelet
> Envoyé : lundi 19 avril 2021 10:43
> À : Users mailing list for Scilab
<users@lists.scilab.org <mailto:users@lists.scilab.org>>
> Objet : [Scilab-users] fmincon toolbox update
>
> Hi all,
>
> I would like to inform you that the fmincon toolbox
has been updated
>
(https://antispam.utc.fr/proxy/v3?i=cWdzUmRSM0ZiRHpoUDkxTSw3-90dQgKDkqmWWemZ6js&r=WXNQOUY5VXRSNUlTdlVTTgAgPzRHrDev93-c71JTxG3gYERdftx8enpEGCicW5Zy&f=R0pWUVNEaUFuMTBCTlptbqaYxU0NWnHz-Aov_fSSM1D4vfIz2L0jb50-moW0RphD&u=https%3A//atoms.scilab.org/toolboxes/fmincon/1.0.2&k=8YLU
<https://antispam.utc.fr/proxy/v3?i=cWdzUmRSM0ZiRHpoUDkxTSw3-90dQgKDkqmWWemZ6js&r=WXNQOUY5VXRSNUlTdlVTTgAgPzRHrDev93-c71JTxG3gYERdftx8enpEGCicW5Zy&f=R0pWUVNEaUFuMTBCTlptbqaYxU0NWnHz-Aov_fSSM1D4vfIz2L0jb50-moW0RphD&u=https%3A//atoms.scilab.org/toolboxes/fmincon/1.0.2&k=8YLU>)
and now includes a major feature: the Efficient
Computation of Sparse Hessian using Coloring algorithm
(scicolpack is now a dependency of fmincon). This
feature was missing and now allows fmincon to consider
really big problems. A example of such is given in the
"minimal surface demo" which compares 3 different
approaches of the problem: one with finite differences
gradient, and BFGS Hessian, one with exact gradient
and BFGS Hessian, and the last with exact gradient and
finite differences sparse Hessian. The time factor
between the first and the third approchach is around
200 for a 21x21 square but you can edit the demo file
and increase this value. For a 51x51 square the third
approach takes only
> 0.45 seconds and is 2500 times faster. For a 101x101
square the first approach takes forever and the third
ones takes less than 2 seconds and is still 10 times
faster than the second one.
>
> If some of you still use other softwares for large
scale optimization, maybe you can now give Scilab a
try. If you need a better control on parameters and/or
if you are not a former/actual user of Matlab's
fmincon, I recommend using directly ipopt (from
sci_ipopt toolbox). But the fmincon api is quite easy
to use. Don't hesitate to took at the code of the
several new demos.
>
> Don't hesitate to contact me if you have some
problems using fmincon of just to say that you are
using it with success !
>
> Regards,
>
> --
> Stéphane Mottelet
> Ingénieur de recherche
> EA 4297 Transformations Intégrées de la Matière
Renouvelable Département Génie des Procédés
Industriels Sorbonne Universités - Université de
Technologie de Compiègne CS 60319, 60203 Compiègne
cedex Tel : +33(0)344234688
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--
Stéphane Mottelet
Ingénieur de recherche
EA 4297 Transformations Intégrées de la Matière
Renouvelable
Département Génie des Procédés Industriels
Sorbonne Universités - Université de Technologie de
Compiègne
CS 60319, 60203 Compiègne cedex
Tel : +33(0)344234688
http://www.utc.fr/~mottelet <http://www.utc.fr/~mottelet>
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Ingénieur de recherche
EA 4297 Transformations Intégrées de la Matière Renouvelable
Département Génie des Procédés Industriels
Sorbonne Universités - Université de Technologie de Compiègne
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