<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Mark,<div class=""><br class=""></div><div class="">I saw your configuration has hypre. If you could run with master, you may try -matptap_via hypre.</div><div class="">It uses BoomerAMGBuildCoarseOperator directly with the AIJ matrices.</div><div class=""><br class=""></div><div class="">Stefano</div><div class=""><br class=""></div><div class=""><div><blockquote type="cite" class=""><div class="">On Feb 2, 2017, at 7:28 PM, Mark Adams <<a href="mailto:mfadams@lbl.gov" class="">mfadams@lbl.gov</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><br class=""><div class="gmail_extra"><br class=""><div class="gmail_quote">On Thu, Feb 2, 2017 at 11:13 AM, Hong <span dir="ltr" class=""><<a href="mailto:hzhang@mcs.anl.gov" target="_blank" class="">hzhang@mcs.anl.gov</a>></span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr" class=""><div class="gmail_extra"><div class="gmail_quote">Mark:</div><div class="gmail_quote"><span style="font-size:12.8px" class="">Try '-matmatmult_via scalable' first. If this works, should we set it as default?</span></div></div></div></blockquote><div class=""><br class=""></div><div class="">If it is robust I would say yes unless it is noticeably slower (say >20%) small scale problems. </div><div class=""><br class=""></div></div></div></div>
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