Petsc + BlockSolve95

[Boulahya Faïza]

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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