<div dir="ltr">I think to some extent it matters what deal you can get. I got the vendor to throw in the interconnect if I got the right processors, which overall<div>was a much better deal for us.</div><div><br></div><div> Matt</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Mar 19, 2021 at 12:19 PM Blaise A Bourdin <<a href="mailto:bourdin@lsu.edu">bourdin@lsu.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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That would be great.
<div>What would be even greater would be if I could run the same test on LSU machines (Xeon 8260). </div>
<div>Blaise</div>
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<div>On Mar 19, 2021, at 10:27 AM, Jed Brown <<a href="mailto:jed@jedbrown.org" target="_blank">jed@jedbrown.org</a>> wrote:</div>
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<div>Blaise A Bourdin <<a href="mailto:bourdin@lsu.edu" target="_blank">bourdin@lsu.edu</a>> writes:<br>
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<blockquote type="cite">Hi,<br>
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I am pricing out a new small cluster for my group and have been out of the HW loop for a while.<br>
Does anybody on the list have experience running petsc on recent generation AMD EPYC?<br>
I assume that the intel will not generate optimized code for non-intel COU. How about gcc / clang?
<br>
My metric is not pure performance but rather performance over price.<br>
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I have a 2-socket 7452, which is a great price point for our sort of work. If you're purely memory bandwidth-limited, you can get fewer cores, but that doesn't save a lot of money. You'd probably want to compare pricing with the new Zen 3 chips too. I'll forward
you a log file from a multigrid solver with some analysis. Suffice it to say, it matches to significantly outperforms (depending on the operation) a 2-socket Xeon 8280.<br>
<br>
<blockquote type="cite">I do mostly implicit finite element codes and 90% of my walltime is KSP / SNES solves<br>
<br>
Regards,<br>
Blaise<br>
<br>
-- <br>
A.K. & Shirley Barton Professor of Mathematics<br>
Adjunct Professor of Mechanical Engineering<br>
Adjunct of the Center for Computation & Technology<br>
Louisiana State University, Lockett Hall Room 344, Baton Rouge, LA 70803, USA<br>
Tel. +1 (225) 578 1612, Fax +1 (225) 578 4276 Web <a href="http://www.math.lsu.edu/~bourdin" target="_blank">
http://www.math.lsu.edu/~bourdin</a><br>
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<div style="margin:0px">-- </div>
<div style="margin:0px">A.K. & Shirley Barton Professor of Mathematics</div>
<div style="margin:0px">Adjunct Professor of Mechanical Engineering</div>
<div style="margin:0px">Adjunct of the Center for Computation & Technology</div>
<div style="margin:0px">Louisiana State University, <span>Lockett Hall Room 344, </span><span>Baton Rouge, LA 70803, USA</span></div>
<div style="margin:0px"><span>Tel. +1 (225) 578 1612, Fax +1 (225) 578 4276 Web </span><span><a href="http://www.math.lsu.edu/~bourdin" target="_blank">http://www.math.lsu.edu/~bourdin</a></span></div>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener</div><div><br></div><div><a href="http://www.cse.buffalo.edu/~knepley/" target="_blank">https://www.cse.buffalo.edu/~knepley/</a><br></div></div></div></div></div></div></div>