<div class="gmail_quote">On Fri, Dec 23, 2011 at 13:37, Mark F. Adams <span dir="ltr"><<a href="mailto:mark.adams@columbia.edu">mark.adams@columbia.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>Also, my algorithm exploits static partitions where you know who is processing your ghost nodes (so you can avoid stepping on each other). This might not be available. Coloring looks OK for 7 point stencils but the number of colors gets very large at higher order. You need about 13 colors for a 3D hex mesh (not very high order at all). But inside the compute node there are sets of vertices that need processing and you can do whatever you want on these sets, so if you need to color then so be it.</div>
<div></div></blockquote></div><br><div>I think the number of colors is pretty much hopeless if you use a stable Stokes element like Q2-P1disc.</div>