[Dune] Dune-Dumux grid loadBalance

[Ali NOWAMOOZ]

Dear Dune users,

 

I have a question about grid partitioning in parallel computation. Is there
any automatic load balancing? 

 

In Dumux, I generally use DgfGridCreator as grid creator. Inside
DgfGridCreator.hh, we have static void loadBalance() and I suppose it should
distribute the grid on all processors of a parallel computation.

 

Now, please take a look on the attached images. As can be seen in the first
image, I am working on a portion of cylinder (I have only one element in
theta direction). On the second image, you can see the process rank (I used
8 processors in this simulation - I used AluGrid as grid generator). The
element are hexahedron with the same height (5m). Maybe I am wrong but I was
expecting a more uniform partitioning. In theory, the domain should be
divided into 8 partitions with the same height (z). Can this problem come
from the way that I managed my *.dgf file (that contains vertex and
elements)? I can send you my grid if you need it.

 

Thanks for your help 

Best regards 

Ali Nowamooz

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.dune-project.org/pipermail/dune/attachments/20140116/8f2f58cd/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: fig_1_1.png
Type: image/png
Size: 220118 bytes
Desc: fig_1_1.png
URL: <https://lists.dune-project.org/pipermail/dune/attachments/20140116/8f2f58cd/attachment.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: fig_2_2.png
Type: image/png
Size: 11424 bytes
Desc: fig_2_2.png
URL: <https://lists.dune-project.org/pipermail/dune/attachments/20140116/8f2f58cd/attachment-0001.png>