<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<p>Would it also work if I just didn't use DMPlexGetHybridBounds()
to differentiate between partition ghost cells and boundary ghost
cells, but instead checked the value of the "ghost" DMLabel?</p>
<p>It appears that DMPlexConstructGhostCells() labels boundary
ghosts with the ghost label value 1, and partition ghosts with
value 2 (in DMPlexShiftLabels_Internal()).<br>
</p>
<p>If that is reliable, then it might save me having to make sure
the boundary ghosts always come last.</p>
<p>- Adrian<br>
</p>
<br>
<div class="moz-cite-prefix">On 04/08/17 15:11, Matthew Knepley
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAMYG4GmzX+3FByL3v_P1+U9uFkBHcV6x6Wh4dLKaQf9unYr9RQ@mail.gmail.com">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<div dir="ltr">
<div class="gmail_extra">
<div class="gmail_quote">On Thu, Aug 3, 2017 at 10:07 PM,
Adrian Croucher <span dir="ltr"><<a
href="mailto:a.croucher@auckland.ac.nz" target="_blank"
moz-do-not-send="true">a.croucher@auckland.ac.nz</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">I am
adding cells onto a DMPlex (for dual porosity). I notice
that normally the ghost cells in a DMPlex are at the end
of the cell list.<br>
<br>
Does it matter if the cells I add come after those ghost
cells, or should the ghosts always come last?<br>
<br>
It seems to me it probably shoudn't matter if the
partition ghosts (created by DMPlexDistribute()) are not
at the end. In my cell loops I just check the value of the
ghost DMLabel and skip them if necessary.<br>
<br>
But perhaps the boundary ghosts (created by
DMPlexConstructGhostCells()) need to come last? Otherwise
the output from DMPlexGetHybridBounds() (to get the bounds
on 'interior' cells, i.e. non-boundary-ghosts) probably
wouldn't make much sense?</blockquote>
<div><br>
</div>
<div>Yes, the only reason to have them last is to have
GetHybridBounds() work for that case.</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"><span
class="HOEnZb"><font color="#888888"><br>
- Adrian<br>
<br>
-- <br>
Dr Adrian Croucher<br>
Senior Research Fellow<br>
Department of Engineering Science<br>
University of Auckland, New Zealand<br>
email: <a href="mailto:a.croucher@auckland.ac.nz"
target="_blank" moz-do-not-send="true">a.croucher@auckland.ac.nz</a><br>
tel: <a href="tel:%2B64%20%280%299%20923%204611"
value="+6499234611" target="_blank"
moz-do-not-send="true">+64 (0)9 923 4611</a><br>
<br>
</font></span></blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<div class="gmail_signature" data-smartmail="gmail_signature">
<div dir="ltr">
<div>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><br>
</div>
<div><a href="http://www.caam.rice.edu/%7Emk51/"
target="_blank" moz-do-not-send="true">http://www.caam.rice.edu/~mk51/</a><br>
</div>
</div>
</div>
</div>
</div>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Dr Adrian Croucher
Senior Research Fellow
Department of Engineering Science
University of Auckland, New Zealand
email: <a class="moz-txt-link-abbreviated" href="mailto:a.croucher@auckland.ac.nz">a.croucher@auckland.ac.nz</a>
tel: +64 (0)9 923 4611
</pre>
</body>
</html>