Petsc + BlockSolve95

[Boulahya Faïza <F.Boulahya@xxxxxxx>]

Hi All,

 

Has anyone used Conjugate Gradient Solver + Icomplete Cholesky Preconditionner in parallel case? I tried as said in the manual : I use MATMPIROWBS for the storage of the matrice. However I get this message :

 

PETSC ERROR: To use incomplete Cholesky
                        preconditioning with a MATMPIROWBS matrix you must declare it to be
                        symmetric using the option MatSetOption(A,MAT_SYMMETRIC)!

 

So I tried adding this option (even if in the namual it is written that it is not required). Then I obtained this message

PETSC ERROR: MatSetOption_MPIRowbs() line 1411 in src/mat/impls/rowbs/mpi/mpirowbs.c
PETSC ERROR: No support for this operation for this object type!
PETSC ERROR: unknown option!
PETSC ERROR: MatSetOption() line 4137 in src/mat/interface/matrix.c

 

In advance thanks,

 

 

Faïza

 

Pensez à visiter le site BRGM sur.... http://www.brgm.fr/

***
Le contenu de cet e-mail et de ses pièces jointes est destiné à l'usage exclusif du 
(des) destinataire(s) expressément désigné(s) comme tel(s). En cas de réception de cet 
 e-mail par erreur, le signaler à son expéditeur et ne pas en divulguer le contenu. 
L'absence de virus a été vérifié à  l'émission du message. Il convient néanmoins de 
vérifier l'absence de corruption à sa réception.

The contents of this email and any attachments are confidential. They are intended for 
the named recipient(s) only. If you have received this email in error please notify the 
system manager or  the sender immediately and do not disclose the contents to 
anyone or make copies. eSafe scanned this email for viruses, vandals and malicious 
content.
***