<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<p>Regarding DMPlex, I'm unclear on the separation between Index
Sets and Plex for unstructured solvers. I've got an existing
unstructured serial solver using petsc's newton-krylov solvers.
Should I be looking to parallelize this via IS or plex? Is there
an interface for either that allows me to specify the partitioning
(e.g. by metis' output)? Last but not least, is there a working
example of dmplex in the docs? The only unstructured code example
I see in the docs is SNES ex10, which uses IS.</p>
<p>Thanks,</p>
<p>Mark<br>
</p>
<br>
<div class="moz-cite-prefix">On 09/09/2016 04:21 AM, Matthew Knepley
wrote:<br>
</div>
<blockquote
cite="mid:CAMYG4G=FvarpJj5XbJ6Got3EhnaVb3Sehb9YKF400tP_LnQW_A@mail.gmail.com"
type="cite">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<div dir="ltr">
<div class="gmail_extra">
<div class="gmail_quote">On Fri, Sep 9, 2016 at 4:04 AM,
Morten Nobel-Jørgensen <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:mono@dtu.dk"
target="_blank">mono@dtu.dk</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div
style="direction:ltr;font-family:Tahoma;color:#000000;font-size:10pt">Dear
PETSc developers and users,<br>
<br>
Last week we posted a question regarding an error with
DMPlex and multiple dofs and have not gotten any
feedback yet. This is uncharted waters for us, since
we have gotten used to an extremely fast feedback from
the PETSc crew. So - with the chance of sounding
impatient and ungrateful - we would like to hear if
anybody has any ideas that could point us in the right
direction?<br>
</div>
</div>
</blockquote>
<div><br>
</div>
<div>This is my fault. You have not gotten a response
because everyone else was waiting for me, and I have been</div>
<div>slow because I just moved houses at the same time as
term started here. Sorry about that.</div>
<div><br>
</div>
<div>The example ran for me and I saw your problem. The
local-tp-global map is missing for some reason.</div>
<div>I am tracking it down now. It should be made by
DMCreateMatrix(), so this is mysterious. I hope to have</div>
<div>this fixed by early next week.</div>
<div><br>
</div>
<div> Thanks,</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>
<div
style="direction:ltr;font-family:Tahoma;color:#000000;font-size:10pt">
We have created a small example problem that
demonstrates the error in the matrix assembly.<br>
<div><font size="1"><span style="font-size:13px"><font
size="2"><br>
Thanks,<br>
Morten</font></span></font></div>
<div><font size="1"><span style="font-size:13px"><font
size="2"><br>
</font></span></font></div>
<div><font size="1"><span style="font-size:13px"><font
size="2"><br>
</font></span></font></div>
</div>
</div>
</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>
</div>
</div>
</blockquote>
<br>
</body>
</html>