Hi Matthew,
I have joined the ex44.c example so you can see that we see.
The problem is about the "f" field number which I can't see any clue in
the documentation to what to put there... We are missing some
information maybe written elsewhere?
I have tried 3 different calls (lines 180-182) w
You are using petsc-3.15.1 - and likely the mumps build change between then and
current 3.16.
Can you use latest PETSc release?
If not - Suggest removing
--download-mumps=https://bitbucket.org/petsc/pkg-mumps.git
--download-mumps-commit=v5.4.1-p1 options [and PETSC_ARCH] and going back to
yo
Hello April,
You’ll need PETSc 3.16.0 to use
--download-mumps=https://bitbucket.org/petsc/pkg-mumps.git
--download-mumps-commit=v5.4.1-p1
The MUMPS Makefile rule changed between 3.15.X (alllib) and 3.16.Y (all).
Thanks,
Pierre
> On 10 Nov 2021, at 8:00 PM, Novak, April via petsc-users
> wrote
Thanks, Barry,
We will try this, and report back
Fande
On Tue, Nov 9, 2021 at 5:41 PM Barry Smith wrote:
>
>This version of MUMPS has a bug in its build system; it does not have
> all the dependencies on Fortran modules properly listed so Fortran files
> can get compiled too early causing
> P is a diffusion matrix, which itself is inverted by KSPCG)
This worries me. Unless solved to full precision the action of solving with CG
is not a linear operator in the input variable b, this means that the action of
your Schur complement is not a linear operator and so iterative eigenvalue
Great thanks, Matt!
The second option is what I was looking for.
Best Regards,
Vlad
От: Matthew Knepley
Отправлено: 10 ноября 2021 г. 16:45:00
Кому: Vladislav Pimanov
Копия: petsc-users@mcs.anl.gov
Тема: Re: [petsc-users] How to compute the condition number of
On Wed, Nov 10, 2021 at 8:42 AM Vladislav Pimanov <
vladislav.pima...@skoltech.ru> wrote:
> Dear PETSc community,
>
>
> I wonder if you could give me a hint on how to compute the condition
> number of a preconditioned matrix in a proper way.
>
> I have a *MatSchurComplement* matrix S and a precond
Dear PETSc community,
I wonder if you could give me a hint on how to compute the condition number of
a preconditioned matrix in a proper way.
I have a MatSchurComplement matrix S and a preconditioner P of the type PCSHELL
(P is a diffusion matrix, which itself is inverted by KSPCG).
I tried t
On Wed, Nov 10, 2021 at 8:26 AM Bhargav Subramanya <
bhargav.subrama...@kaust.edu.sa> wrote:
> Dear Matt,
>
> Thanks a lot for the reply. I am now able to generate the prismatic mesh
> properly.
>
Cool.
> In the case of mpiexec -n 2 ./meshtest -dm_plex_shape sphere
> -dm_refine_pre 3 -dm_distri
Dear Matt,
Thanks a lot for the reply. I am now able to generate the prismatic mesh
properly.
In the case of mpiexec -n 2 ./meshtest -dm_plex_shape sphere -dm_refine_pre
3 -dm_distribute -dm_refine 2 and DMExtrude(), where I am ordering the
extruded cells on the layers first; Is the mesh extruded
Thanks for your valuable advice. Your patience and recognition is
highly appreciated.
I will do some reading and think it over. Some tests will be performed
in recent days.
Regards.
Yu
Barry Smith 于2021年11月7日周日 下午11:15写道:
>
>
>I think you can use the following approach. Instead of making t
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