Thanks, Mark. Yes, it actually works when I update to
ISLocalToGlobalMappingGetIndicesF90. I made a mistake reporting this does not
work.
Danyang
From: Mark Adams
Date: Monday, May 8, 2023 at 7:22 PM
To: Danyang Su
Cc: petsc-users
Subject: Re: [petsc-users] Question on ISLocalToGlobalM
On Mon, May 8, 2023 at 6:50 PM Danyang Su wrote:
> Dear PETSc-Users,
>
>
>
> Is there any changes in ISLocalToGlobalMappingGetIndices function after
> PETSc 3.17?
>
>
>
> In the previous PETSc version (<= 3.17), the function
> ‘ISLocalToGlobalMappingGetIndices(ltogm,ltog,idltog,ierr)’ works fine,
See https://gitlab.com/petsc/petsc/-/merge_requests/6436 with commit
barry/2023-05-08/add-ksp-min-its
> On May 7, 2023, at 2:22 PM, Edoardo alinovi wrote:
>
> Hello Barry,
>
> Mega! Thank you Berry much for providing me with a working example! I ended
> up in writing this:
>
>
Dear PETSc-Users,
Is there any changes in ISLocalToGlobalMappingGetIndices function after PETSc
3.17?
In the previous PETSc version (<= 3.17), the function
‘ISLocalToGlobalMappingGetIndices(ltogm,ltog,idltog,ierr)’ works fine, even
though the value of idltog looks out of bound (-1147265
Sebastian Blauth writes:
> Hello everyone,
>
> I wanted to briefly follow up on my question (see my last reply).
> Does anyone know / have an idea why the LSC preconditioner in PETSc does
> not seem to scale well with the problem size (the outer fgmres solver I
> am using nearly scale nearly li
You can achieve the same effect by calling MatAssemblyBegin/End
Il giorno lun 8 mag 2023 alle ore 15:54 Pichler, Franz <
franz.pich...@v2c2.at> ha scritto:
> Hello,
> i am using petsc in a single cpu setup where I have preassembled crs
> matrices that I wrap via PetSC’s
>
> MatCreateSeqAIJWithArr
Hello,
i am using petsc in a single cpu setup where I have preassembled crs matrices
that I wrap via PetSC's
MatCreateSeqAIJWithArrays Functionality.
Now I manipulate the values of these matrices (wohtout changing the sparsity)
without using petsc,
When I now want to solve again I have to call
On Mon, May 8, 2023 at 7:27 AM Mark Adams wrote:
>
>
> On Mon, May 8, 2023 at 2:32 AM Sebastian Blauth <
> sebastian.bla...@itwm.fraunhofer.de> wrote:
>
>> Hello everyone,
>>
>> I wanted to briefly follow up on my question (see my last reply).
>> Does anyone know / have an idea why the LSC precon
On Mon, May 8, 2023 at 2:32 AM Sebastian Blauth <
sebastian.bla...@itwm.fraunhofer.de> wrote:
> Hello everyone,
>
> I wanted to briefly follow up on my question (see my last reply).
> Does anyone know / have an idea why the LSC preconditioner in PETSc does
> not seem to scale well with the problem
