RE: Petsc + BlockSolve95

On 5/17/06, Boulahya Faïza <F.Boulahya@xxxxxxx> wrote:

Ok but the error does not come from parallell ICC. It's from the MatSetOption().

Moreover, when I tried with MATMPIROWBS , it's the same problem :
[0]PETSC ERROR: MatSetOption_MPIRowbs() line 1411 in src/mat/impls/rowbs/mpi/mpirowbs.c

[0]PETSC ERROR: No support for this operation for this object type!
[0]PETSC ERROR: unknown option!
[0]PETSC ERROR: MatSetOption() line 4137 in src/mat/interface/matrix.c

Faïza

-----Message d'origine-----
De : Satish Balay [mailto:balay@xxxxxxxxxxx]
Envoyé : mardi 16 mai 2006 15:39

À : 'petsc-users@xxxxxxxxxxx'

Objet : RE: Petsc + BlockSolve95
> [0]PETSC ERROR: MatSetOption_MPIAIJ() line 1251 in
> src/mat/impls/aij/mpi/mpiaij.c [0]PETSC ERROR: No support for this operation for this object type!

AIJ matrix does not support parallell ICC. BlockSolve provides parallel ICC - and to use it one must use MatType MATMPIROWBS

Satish

On Tue, 16 May 2006, Boulahya Faïza wrote:

> Is there something new about it?

> De : Vaz, Guilherme [mailto:G.Vaz@xxxxxxxx]

> I have exactly the same problem as Faiza...
> In sequential it runs ok but in parallel not.

> -----Original Message-----
> From: owner-petsc-users@xxxxxxxxxxx
> [mailto:owner-petsc-users@xxxxxxxxxxx]
> On Behalf Of Boulahya Faïza

> I tried something else :
>
>     - creation of the matrix with MatCreateMPIAIJ
>
>     - initialization
>
>     - adding of the options MAT_SYMMETRIC and MAT_SYMMETRY_ETERNAL
>
>
>
> When solving in sequential CG + ICC, everything is ok. When I tried in
> parallel the same code the options lead to the same error :
>
> [0]PETSC ERROR: MatSetOption_MPIAIJ() line 1251 in
> src/mat/impls/aij/mpi/mpiaij.c [0]PETSC ERROR: No support for this
> operation for this object type!
> [0]PETSC ERROR: unknown option!
> [0]PETSC ERROR: MatSetOption() line 4137 in src/mat/interface/matrix.c
>
> Can MatSetOption be only used in sequential?
>
>
>
>
>
> Faïza
>
>
>
>
>
>   _____
>
> De : Matthew Knepley [mailto:knepley@xxxxxxxxx] Envoyé : mardi 9 mai
> 2006 18:19 À : petsc-users@xxxxxxxxxxx Objet : Re: Petsc +
> BlockSolve95
>
> I believe there is a problem with the option that you specified. All
> these are integers, and it is complaining that the integer does not
> match MAT_SYMMETRIC. I will fix the error message to print the
> offending option, but please check the code.
>
>   Thanks,
>
>      Matt
>
> On 5/9/06, Boulahya Faïza <F.Boulahya@xxxxxxx
> <mailto:F.Boulahya@xxxxxxx> >
> wrote:
>
> 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/
>
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