<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<br>
<br>
<div class="moz-cite-prefix">On 3/5/15 4:18 PM, Matthew Knepley
wrote:<br>
</div>
<blockquote
cite="mid:CAMYG4Gnxo_SYAR7h0i9EU3-_P3fy8ygCWZThvOP73zmRkA_WDQ@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 Thu, Mar 5, 2015 at 5:01 AM, anton
<span dir="ltr"><<a moz-do-not-send="true"
href="mailto:popov@uni-mainz.de" target="_blank">popov@uni-mainz.de</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">Hi,<br>
<br>
Does the near-null-space get attached to the internal ksp
object of redundant preconditioner, or a user has to
scatter and attach it manually?<br>
If so, what would be a suggested way to do that?<br>
</blockquote>
<div><br>
</div>
<div>Its not there, but would be easy to put in. I would
either</div>
<div><br>
</div>
<div> a) Open an issue with the Bitbucket tracker, and
someone will get to it</div>
<div><br>
</div>
<div>or</div>
<div><br>
</div>
<div> b) Code it up in a pull request</div>
<div><br>
</div>
<div>I think it would only be a few lines
in PCSetUp_Redundant(). You check whether the pc->mat
has</div>
<div>an attached near null space, and then use the
VecScatters above to map the vectors, and carry</div>
<div>over the flag for constant null space.</div>
<div><br>
</div>
<div> Thanks,</div>
<div><br>
</div>
<div> Matt</div>
<div> </div>
</div>
</div>
</div>
</blockquote>
Thanks Matt, I'll check this<br>
<br>
Anton
<blockquote
cite="mid:CAMYG4Gnxo_SYAR7h0i9EU3-_P3fy8ygCWZThvOP73zmRkA_WDQ@mail.gmail.com"
type="cite">
<div dir="ltr">
<div class="gmail_extra">
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">Thanks,<br>
<br>
Anton<br>
</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<div class="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>