[scilab-Users] Umpfpack dll

[Eric Jacquet-Lagrèze]

Hello

I did found the solution to my previous problem (impossibility to run
Umpfpack dll under windows:

When installing UMFPACK, this component is proposed, but after there are
mentions to the libraries. cid:image002.png at 01CADC05.ECE5A2A0

 

The default option “Intel Kernel Library for Scilab”,  does not work.

 

If we select teh library  Blas, Lapack de référence pour Scilab, it works
well :

cid:image003.png at 01CADC06.04C69C80

 

 

 

Eric JACQUET-LAGREZE

Directeur associé / Associate manager

EURODECISION

9A rue de la Porte de Buc 78000 VERSAILLES
Office : +33 (0)1 39 07 12 40
Mobile : +33 (0)6 07 32 36 23

www.eurodecision.com

 <http://www.eurodecision.com/> cid:image001.gif at 01CAB145.F4B20E50

 

De : Eric Jacquet-Lagrèze [mailto:eric.jacquet-lagreze at eurodecision.com] 
Envoyé : mardi 13 avril 2010 12:06
À : 'users at lists.scilab.org'
Objet : [scilab-Users] Umpfpack dll

 

Hello

Has someone experience using UMPFPACK library (dll under windows) ?

 

I would like to now how to access to the Umfpack method for solving spare
linear systems  using  scilab-5.2.1

 

A = sparse( [ 2  3  0  0  0;

              3  0  4  0  6; 

              0 -1 -3  2  0; 

              0  0  1  0  0; 

              0  4  2  0  1] );

b = [8 ; 45; -3; 3; 19];

 

Lusolve  works well

x=lusolve(A,b)

 x  =

 

    1.  

    2.  

    3.  

    4.  

    5.  

norm(A*x-b)

 ans  =

 

    0.  

But when I call umfpack, it does not find the dll:

>x = umfpack(b,"/",A) 

                     !--error 999 

Impossible de charger la bibliothèque umfpack.dll : La procédure spécifiée
est introuvable.

 

Nevertheless umfpack.dll exists in the directory  C:\Program
Files\scilab-5.2.1\bin  

 

Eric JACQUET-LAGREZE

EURODECISION

9A rue de la Porte de Buc 78000 VERSAILLES
Office : +33 (0)1 39 07 12 40
Mobile : +33 (0)6 07 32 36 23

www.eurodecision.com

 <http://www.eurodecision.com/> cid:image001.gif at 01CAB145.F4B20E50

 

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