Thank you for the comments.
But If the ordering before DMPlexDistribute is what you're looking for, the
SF directly tells you the mapping. The leaves of the natural SF gives you
the indices from your file. You just need to shift it by +1.
*-> I do not agree. Below is my Natural SF with 2 proc,
Thank you for the comments.
If you define a scalar P1 field of one component, then the dof index will
be the vertex index.
*-> When you say P1 field of one component, what does exactly mean? I put
1dof scalar field on vertex when the Petsc section is defined. Is this P0
or P1 in Petsc's
Hi Bora,
I agree with Matt.
I don't know what
DMPlexCreateGmshFromFile() is doing in term of distribution then. But If
the ordering before DMPlexDistribute is what you're looking for, the SF directly tells you the mapping. The leaves of the natural SF gives you the indices from your file.
It is suppose to not rebuild the preconditioner for the A00 block if the matrix
does not change; and automatically rebuild if it does change.
> On Jul 20, 2022, at 4:14 PM, Mike Welland wrote:
>
> My A00 block in an SNES solve with a Schur complement preconditioner is
> constant, and I'd
My A00 block in an SNES solve with a Schur complement preconditioner is
constant, and I'd like to exploit this for computational speedup. I'm
running PETSc through a FEM package (Firedrake) so only have ready access
to the options database (I believe that to be the command line arguments)
Is this
On Wed, Jul 20, 2022 at 2:27 PM Bora Jeong wrote:
> I am not seeing DMPlexDistributeSetDefault(dm,PETSC_FALSE) after you
> create your DM from the GMSH file. Your DM is then automatically
> distributed and the natural ordering won't be a priori the one from your
> file. I don't know how Petsc
I am not seeing DMPlexDistributeSetDefault(dm,PETSC_FALSE) after you create
your DM from the GMSH file. Your DM is then automatically distributed and
the natural ordering won't be a priori the one from your file. I don't know
how Petsc distributes a DM during the load step from a file.
*->
You can put these in a .petscrc file in your home directory, the current
directory or in the environmental variable PETSC_OPTIONS (I do this)
> On Jul 20, 2022, at 2:43 PM, Jacob Faibussowitsch wrote:
>
> Run with "-options_left 0" (also accepts no, and false)
>
> Best regards,
>
>
Run with "-options_left 0" (also accepts no, and false)
Best regards,
Jacob Faibussowitsch
(Jacob Fai - booss - oh - vitch)
> On Jul 20, 2022, at 14:31, Greg Kahanamoku-Meyer
> wrote:
>
> Hi,
>
> The unused option warning
>
Hi,
The unused option warning (
https://petsc.org/release/docs/manualpages/Sys/PetscOptionsLeft.html) is
automatically turned on when running in debug mode. Is there a way to turn
it off (other than turning off all debugging)?
For a bit of background, I am using PETSc through petsc4py, and
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