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<font face="Ubuntu">Hi Jed,<br>
<br>
I attached the output for both the runs you suggested. At the
beginning of each file I included the options I used.<br>
<br>
On a side note, I tried to run with a grid of 256^3 (exactly as
before) but with less levels, i.e. 3 instead of 4 or 5.<br>
My system stops the run because of an Out Of Memory condition. It
is really odd since I have not changed anything except</font><br>
- pc_mg_levels. I cannot send you any output since there is none.
Do you have any guess where the problem comes from? <font
face="Ubuntu"><br>
Thanks,<br>
<br>
Michele<br>
<br>
</font>
<div class="moz-cite-prefix">On 08/13/2013 07:23 PM, Jed Brown
wrote:<br>
</div>
<blockquote cite="mid:87y585ko2v.fsf@mcs.anl.gov" type="cite">
<pre wrap="">Michele Rosso <a class="moz-txt-link-rfc2396E" href="mailto:mrosso@uci.edu"><mrosso@uci.edu></a> writes:
</pre>
<blockquote type="cite">
<pre wrap="">The matrix arises from discretization of the Poisson equation in
incompressible flow calculations.
</pre>
</blockquote>
<pre wrap="">
Can you try the two runs below and send -log_summary?
-log_summary -ksp_monitor -ksp_view -ksp_converged_reason -pc_type mg -pc_mg_galerkin -pc_mg_levels 5 -mg_levels_ksp_type richardson -mg_levels_ksp_max_it 1
-log_summary -ksp_monitor -ksp_view -ksp_converged_reason -pc_type mg -pc_mg_galerkin -pc_mg_levels 5 -mg_levels_ksp_type richardson -mg_levels_ksp_max_it 1 -pc_mg_type full
</pre>
</blockquote>
<br>
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