<div class="gmail_quote">On Mon, Jan 2, 2012 at 21:58, Dave Nystrom <span dir="ltr"><<a href="mailto:dnystrom1@comcast.net">dnystrom1@comcast.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div id=":23k">I'm wondering if petsc has support for reordering the unknowns under the hood<br>
so that for the z-coupling case, the matrix can be cast as a compact<br>
tridiagonal matrix. Essentially, this would be support for minimizing the<br>
bandwidth.</div></blockquote></div><br><div>-pc_factor_mat_ordering_type rcm</div><div><br></div><div><br></div><div>You can get this with MatGetOrdering(A,MATORDERINGRCM,&isrow,&iscol)</div><div><br></div><div><br>
</div><div>We need to write man pages for all the MatOrderingTypes (RCM, ND, etc)</div>