Thanks Jed for the point. <br><br>Best, <br>Mohamad<br><br><br><div class="gmail_quote">On Sun, Jan 8, 2012 at 6:54 PM, Jed Brown <span dir="ltr"><<a href="mailto:jedbrown@mcs.anl.gov" target="_blank">jedbrown@mcs.anl.gov</a>></span> wrote:<br>
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<div><div class="gmail_quote">On Sun, Jan 8, 2012 at 20:28, Mohamad M. Nasr-Azadani <span dir="ltr"><<a href="mailto:mmnasr@gmail.com" target="_blank">mmnasr@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
Maybe I was not 100% clear, the way that I dealt with the nullspace was to set the pressure to zero at one node in the entire domain. </blockquote></div><br></div><div>Well, this pollutes the spectrum, although most preconditioners fix it. We recommend using KSPSetNullSpace() instead.</div>
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