<div class="gmail_quote">On Tue, Oct 25, 2011 at 20:50, Barry Smith <span dir="ltr"><<a href="mailto:bsmith@mcs.anl.gov">bsmith@mcs.anl.gov</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
The coloring the INL guy need is for efficient computation of Jacobians; it is a different coloring than needed for smoothers. Of course we should have both in PETSc, but have neither in parallel.</blockquote></div><br><div>
Isn't this just the distinction between coloring a symmetric matrix and coloring a triangular matrix? (Maybe there are more consequences to the algorithm.)</div>