<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">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 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>