<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 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><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>
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