[petsc-users] Coarsening vectors

[Mohamad M. Nasr-Azadani]

Thanks Jed. Makes sense.
For simple copying values, is there anyway around it so we don't create the
matrix?

Thanks,
Mohamad

On Fri, Apr 6, 2012 at 3:59 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> On Fri, Apr 6, 2012 at 17:56, Mohamad M. Nasr-Azadani <mmnasr at gmail.com>wrote:
>
>> I just noticed the command DMCoarsen().
>> I was wondering if there is a simple command which copies the values of
>> the (global) vector created via the fine DM into the coarse DM?
>>
>
> with petsc-dev or petsc-3.2 respectively,
>
>
> http://www.mcs.anl.gov/petsc/petsc-dev/docs/manualpages/DM/DMCreateInterpolation.html
>
> http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/DM/DMGetInterpolation.html
>
> then
>
>
> http://www.mcs.anl.gov/petsc/petsc-dev/docs/manualpages/Mat/MatRestrict.html
>
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