[petsc-users] Question about Sequential & Parallel part

[Matthew Knepley]

On Wed, Oct 19, 2022 at 9:26 AM 김성익 <ksi2443 at gmail.com> wrote:

> Dear PETSc users,
>
>
> I have a question about structure of programming.
>
> My blueprint of Finite Element programming with PETSc solver is below.
> [image: image.png]
> The blue box is whole loop for my FE program.
> There is a loop B that performs a convergence iteration (KU=F) inside the
> loop A in which the load increment increases.
> I want to proceed in rank=0 sequentially except for the kspsolve part that
> solves KU=F.
>
> How can I do this??
>

I think you want this:


https://petsc.org/main/docs/manual/ksp/#using-a-mpi-parallel-linear-solver-from-a-non-mpi-program

  Thanks,

    Matt


> Best regards,
> Hyung Kim
>


-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener

https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
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