Paraview shows metis partition borders in output

Post processing utility for Elmer
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mrceresa
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Paraview shows metis partition borders in output

Post by mrceresa »

Hi all,
When I run a parallel simulation and look at the results in paraview, the volume shows some heavy signs of being partitioned and it is a bit ugly if I want to take some screenshots (Please look at the difference between the partioned and un-partitioned volumes to see what I mean). Is there a way to remove this effect?

Thanks

Mario
Attachments
partitioned.png
After metis partioning
(397.46 KiB) Not downloaded yet
normal.png
Normal volume
(264.89 KiB) Not downloaded yet
raback
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Re: Paraview shows metis partition borders in output

Post by raback »

Hi

You could at least make the partition smoother e.g. enforcing the use of dual graph as in

Code: Select all

ElmerGrid 2 2 mesh -partdual -metis #npart 4
or using the dedicated dual method (method 1) of Metis as in

Code: Select all

ElmerGrid 2 2 mesh -metis #npart 1
The visualization problem seems more like a Paraview problem. These boundaries are not saved. Paraview just cannot understand that they form a continuous block. I don't know whether there is some operator to fuse the nodes or elements. You would have the same problem also in ElmerPost.

-Peter
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