[petsc-users] Scatter parallel Vec to sequential Vec on non-zeroth process

[Matthew Knepley]

On Wed, Jun 30, 2021 at 6:49 AM Peder Jørgensgaard Olesen via petsc-users <
petsc-users at mcs.anl.gov> wrote:

> Hello
>
>
> I have a parallel vector, and I'd like to copy its data to a sequential
> vector located on a given process that is not necessarily the
> 0th process, so using VecScatterCreateToZero wouldn't do here.
>
>
> How might one approach this?
>
The function is very short:
https://www.mcs.anl.gov/petsc/petsc-current/src/vec/is/sf/interface/vscat.c.html#VecScatterCreateToZero
Just go in and replace '0' by the rank you want.

  Thanks,

     Matt

> Med venlig hilsen / Best Regards
>
>
> Peder Jørgensgaard Olesen
>
> PhD Student, Turbulence Research Lab
>
> Dept. of Mechanical Engineering
>
> Technical University of Denmark
>
> Koppels Allé
>
> Bygning 403, Rum 105
>
> DK-2800 Kgs. Lyngby
>


-- 
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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