<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<p>Hi Matt,</p>
<p>Thanks for the quick reply. Will let you know when I am confused
in using it.<br>
</p>
<p>Regards,</p>
<p>Danyang<br>
</p>
<div class="moz-cite-prefix">On 2019-08-15 9:22 a.m., Matthew
Knepley wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAMYG4G=Pi4zUURPk0OMdzd_aosCbzQvxRJqGZ+YhUVcqTnFZMA@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">
<div dir="ltr">On Thu, Aug 15, 2019 at 12:18 PM Danyang Su <<a
href="mailto:danyang.su@gmail.com" moz-do-not-send="true">danyang.su@gmail.com</a>>
wrote:<br>
</div>
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">Hi Barry and Matt,<br>
<br>
Would you please give me some advice on the functions I need
to use to <br>
set different dof to the specified nodes. For now, I use <br>
DMPlexCreateSection that dof is uniform throughout the
domain. I am a <br>
bit lost in choosing the right DMPlex functions,
unfortunately.<br>
</blockquote>
<div><br>
</div>
<div>Chapter 10 of the PETSc User Manual discusses low-level
data layout using Section. How about we start</div>
<div>there and then clarify anything that is confusing.</div>
<div><br>
</div>
<div> Thanks,</div>
<div><br>
</div>
<div> Matt</div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
Thanks and regards,<br>
<br>
Danyang<br>
<br>
On 2019-02-07 1:53 p.m., Danyang Su wrote:<br>
> Thanks, Barry. DMPlex also works for my code.<br>
><br>
> Danyang<br>
><br>
> On 2019-02-07 1:14 p.m., Smith, Barry F. wrote:<br>
>> No, you would need to use the more flexible
DMPlex<br>
>><br>
>><br>
>>> On Feb 7, 2019, at 3:04 PM, Danyang Su via
petsc-users <br>
>>> <<a href="mailto:petsc-users@mcs.anl.gov"
target="_blank" moz-do-not-send="true">petsc-users@mcs.anl.gov</a>>
wrote:<br>
>>><br>
>>> Dear PETSc Users,<br>
>>><br>
>>> Does DMDA support different number of degrees
of freedom for <br>
>>> different node? For example I have a 2D
subsurface flow problem with <br>
>>> the default dof = 1 throughout the domain. Now
I want to add some <br>
>>> sparse fractures in the domain. For the nodes
connected to the <br>
>>> sparse fractures, I want to set dof to 2. Is it
possible to set dof <br>
>>> to 2 for those nodes only?<br>
>>><br>
>>> Thanks,<br>
>>><br>
>>> Danyang<br>
>>><br>
</blockquote>
</div>
<br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr" class="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<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.cse.buffalo.edu/~knepley/"
target="_blank" moz-do-not-send="true">https://www.cse.buffalo.edu/~knepley/</a><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</body>
</html>