<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Mon, Aug 10, 2015 at 9:56 AM, Justin Chang <span dir="ltr"><<a href="mailto:jychang48@gmail.com" target="_blank">jychang48@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi all,<br><br>1) I ran across this paper:<br><br><a href="http://web.stanford.edu/~egawlik/pdf/GaMuSaWi2012.pdf" target="_blank">http://web.stanford.edu/~egawlik/pdf/GaMuSaWi2012.pdf</a><br><div><br></div><div>and was wondering if there are any current TAO examples that do this.</div><div><br></div><div>also</div><div><br></div><div>2) If I integrate this into an FEM (from DMPlex) I will need to assemble an equality jacobian matrix and constraint vector. But the element-wise constraints that I need to compute (e.g., the divergence) needs all degrees of freedom within the element closure including the essential BCs DMPlex removes from the global matrix/vector. So how can I work around this and/or access said removed terms inside a TAO routine?<br></div></div></blockquote><div><br></div><div>Those are not really dofs, they are boundary values, so they are not in the global system. The local vectors have</div><div>the boundary values, so you can calculate the correct constraint eqns to put in the global system.</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"><div dir="ltr"><div>Thanks,</div><div>Justin</div></div>
</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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