Dear Petsc users and developers,
I have a MPIAIJ matrix (already assembled) and I would like to transform it in
a block matrix with of block dimension 3.
Is there a easy way to do that?
Thank you in advance,
Sonia
Ph.D. Student
Group of Prof. Rolf Krause
Institute of Computational Science
Uni
e: +41 58 666 4972
> On 14 Mar 2018, at 16:00, Matthew Knepley wrote:
>
> On Wed, Mar 14, 2018 at 11:21 PM, Sonia Pozzi <mailto:sonia.po...@usi.ch>> wrote:
> Dear Barry,
>
> thank you for the answer. That helped a lot. Just a second curiosity.
> I’m setting A00 to
Dear Barry,
thank you for the answer. That helped a lot. Just a second curiosity.
I’m setting A00 to be solved with preonly+lu. I obtain the following
ksp_0 KSPGetTotalIterations: 26
ksp_1 KSPGetTotalIterations: 22
Residual ksp_0: 0 Reason ksp_0: 4
Solution ksp_0 : Convergence in 1 iterations.
Schur complement.
What is the number of its that I get from subksp_0? Is it the total number of
calls or is it just related to the last solution for A00?
In the second case, is there a strategy to have the total number?
My best regards and thank you,
Sonia Pozzi
Ph.D. Student
Group of Prof. Rolf
Dear Barry,
At the moment I’m dealing with the following problem.
Suppose I want to solve Sx=b, where is a product of matrices. In particular
inside it contains also an inverse of a matrix.
To compute the action of S I have created a shell matrix, but know I would like
to apply the ASM as prec
