<div class="gmail_quote">On Fri, Dec 23, 2011 at 09:50, 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">
Humm, my G-S in not in PETSc and it is perfectly scalable. It does have more complex communication patterns but they are O(1) in latency and bandwidth. I'm not sure I understand your description above.</blockquote></div>
<br><div>It was more like, here's something that perhaps we want to put in PETSc, what rich communication pattern does it use, such that, if provided, the implementation would be simple?</div>