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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/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.<br>
<br>
leejearl</p>
<br>
<div class="moz-cite-prefix">On 2016年08月11日 14:57, Julian Andrej
wrote:<br>
</div>
<blockquote
cite="mid:CABFzUT0YOcxnUEt823Dnw2zQoeB2VFQgUGtdm+7bmFbLbsMZdw@mail.gmail.com"
type="cite">
<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 moz-do-not-send="true"
href="https://www.archer.ac.uk/training/virtual/files/2015/06-PETSc/slides.pdf">https://www.archer.ac.uk/training/virtual/files/2015/06-PETSc/slides.pdf</a></div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Aug 11, 2016 at 8:48 AM,
leejearl <span dir="ltr"><<a moz-do-not-send="true"
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 class="HOEnZb"><font
color="#888888"><br>
<br>
leejearl<br>
<br>
<br>
<br>
</font></span></blockquote>
</div>
<br>
</div>
</blockquote>
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