<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Thu, Aug 11, 2016 at 3:14 AM, leejearl <span dir="ltr"><<a href="mailto:leejearl@126.com" target="_blank">leejearl@126.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p>Hi, <br>
Thank you for your reply. It help me very much.<br>
But, for "/petsc-3.7.2/src/ts/examples/<wbr>tutorials/ex11.c", when
I set the overlap to 2 levels, the command is <br>
"mpirun -n 3 ./ex11 -f annulus-20.exo -ufv_mesh_overlap 2 -physics
sw", it suffers a error.<br>
It seems to me that setting overlap to 2 is very common. Are
there issues that I have not take into consideration?<br>
Any help are appreciated.</p></div></blockquote><div>I will check this out. I have not tested an overlap of 2 here since I generally use nearest neighbor FV methods for</div><div>unstructured stuff. I have test examples that run fine for overlap > 1. Can you send the entire error message?</div><div><br></div><div>If the error is not in the distribution, but rather in the analytics, that is understandable because this example is only</div><div>intended to be run using a nearest neighbor FV method, and thus might be confused if we give it two layers of ghost</div><div>cells.</div><div><br></div><div> Matt</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div bgcolor="#FFFFFF" text="#000000"><p><span class="HOEnZb"><font color="#888888"><br>
leejearl</font></span></p><div><div class="h5">
<br>
<div>On 2016年08月11日 14:57, Julian Andrej
wrote:<br>
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<div dir="ltr">Hi,
<div><br>
</div>
<div>take a look at slide 10 of [1], there is visually explained
what the overlap between partitions is.</div>
<div><br>
</div>
<div>[1] <a href="https://www.archer.ac.uk/training/virtual/files/2015/06-PETSc/slides.pdf" target="_blank">https://www.archer.ac.uk/<wbr>training/virtual/files/2015/<wbr>06-PETSc/slides.pdf</a></div>
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Aug 11, 2016 at 8:48 AM,
leejearl <span dir="ltr"><<a href="mailto:leejearl@126.com" target="_blank">leejearl@126.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi, all:<br>
I want to use PETSc to build my FVM code. Now, I have a
question about<br>
the function DMPlexDistribute(DM dm, PetscInt overlap,
PetscSF *sf, DM *dmOverlap) .<br>
<br>
In the example "/petsc-3.7.2/src/ts/examples/<wbr>tutorials/ex11.c".
When I set the overlap<br>
as 0 or 1, it works well. But, if I set the overlap as 2, it
suffers a problem.<br>
I am confused about the value of overlap. Can it be set
as 2? What is the meaning of<br>
the parameter overlap?<br>
Any helps are appreciated!<span><font color="#888888"><br>
<br>
leejearl<br>
<br>
<br>
<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature">What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener</div>
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