[petsc-users] Update DMDA attached to DMSWARM

[Matthew Knepley]

On Wed, Jan 15, 2025 at 7:09 AM MIGUEL MOLINOS PEREZ <mmolinos at us.es> wrote:

> Dear all,
>
> It seems that we can not modify the coordinates of the background mesh
> attached to a DMSwarm simulation. This is a feature?
>

1. I have recently overhauled this functionality because it was not
flexible enough for the plasma simulation we do. Thus main and release work
differently.

2. I assume you are using release

3. In both main and release, if you change the coordinates of your CellDM
mesh, you need to rebin the particles. The easiest way to do this is to
call DMSwarmMigrate(sw, PETSC_FALSE).

  Thanks,

     Matt


> Best,
> Miguel
>
-- 
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

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