<div class="gmail_quote">On Tue, Mar 6, 2012 at 09:38, Matthew Knepley <span dir="ltr"><<a href="mailto:knepley@gmail.com">knepley@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>ADI is from the last century. Use PETSc's Geometric Multigrid. If you look at SNES ex50 and the tutorial runs for it, you can</div><div>see how this works.</div></blockquote></div><br><div>ex5.c is a better example if you are solving a scalar problem.</div>
<div><br></div><div>Sanjay, ADI has poor memory memory characteristics, does not scale well in parallel, and is very restrictive. As Matt says, multigrid is a better and more general approach, it will converge faster and scale better.</div>