<div dir="ltr">On Wed, Jul 17, 2013 at 6:02 PM, Zou (Non-US), Ling <span dir="ltr"><<a href="mailto:ling.zou@inl.gov" target="_blank">ling.zou@inl.gov</a>></span> wrote:<br><div class="gmail_extra"><div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi All,<br>
<br>
If I have a 2-d problem with unstructured triangle mesh, I suppose I<br>
need handle the coloring manually in case I need the finite<br>
differencing Jacobian. Also I guess it is doable as I know the mesh<br>
connectivity. I noticed there are several examples handling structured<br>
mesh case. Is there any example to setup the matrix coloring for this<br>
kind of case?<br></blockquote><div><br></div><div>We have no examples of this, and have not pushed it in our development. I</div><div>would also consider forming a simplified operator for preconditioning while</div><div>
using the finite difference approximation for the action.</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">
Best,<br>
<br>
Ling<br>
</blockquote></div><br><br clear="all"><div><br></div>-- <br>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
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