[petsc-users] Example for unstructured grid, metis, petsc

[Hoang Giang Bui]

Dear Matt

The last option is in fact very interesting. Do you know if we can already
use it a priori from the master branch?

Giang

On Mon, Aug 22, 2016 at 12:45 PM, Matthew Knepley <knepley at gmail.com> wrote:

> On Mon, Aug 22, 2016 at 4:05 AM, Praveen C <cpraveen at gmail.com> wrote:
>
>> Dear all
>>
>> We are developing a 3d unstructured grid finite volume code for
>> compressible turbulent flows.
>>
>> Our approach is to use metis/parmetis to partition the mesh.
>> Then read these partitioned mesh files in the MPI-based cfd code for
>> computation.
>>
>> Are there any examples available in PETSc which are similar to this.
>>
>
> That is a pretty difficult problem. The closest example we have is
> probably TS ex11, which can solve
> things like the shallow water equation and Euler. Currently it reads in a
> mesh, partitions in memory,
> and distributes the mesh using MPI. After that it can regularly refine. In
> the next release, we will
> introduce the ability to
>
>   - read a mesh in parallel
>
>   - adaptively refine in parallel using the Pragmatic package
>
>   - load balance after adaptive refinement
>
>   - use adaptive quadtree meshes from p4est
>
>   Thanks,
>
>      Matt
>
>
>> Thanks
>> praveen
>>
> --
> 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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