<div dir="ltr"><div>Oh, and use the Adaptive computing HPL calculator to get your input file. </div><div>Thanks Adaptive guys!</div></div><div class="gmail_extra"><br><div class="gmail_quote">On 22 February 2018 at 16:44, Michael Di Domenico <span dir="ltr"><<a href="mailto:mdidomenico4@gmail.com" target="_blank">mdidomenico4@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">i can't speak to AMD, but using HPL 2.1 on Intel using the Intel<br>
compiler and the Intel MKL, i can hit 90% without issue. no major<br>
tuning either<br>
<br>
if you're at 33% i would be suspect of your math library<br>
<div class="HOEnZb"><div class="h5"><br>
On Thu, Feb 22, 2018 at 9:37 AM, Prentice Bisbal <<a href="mailto:pbisbal@pppl.gov">pbisbal@pppl.gov</a>> wrote:<br>
> Beowulfers,<br>
><br>
> In your experience, how close does actual performance of your processors<br>
> match up to their theoretical performance? I'm investigating a performances<br>
> issue on some of my nodes. These are older systems using AMD Opteron 6274<br>
> processors. I found literature from AMD stating the theoretical performance<br>
> of these processors is 282 GFLOPS, and my LINPACK performance isn't coming<br>
> close to that (I get approximately ~33% of that). The number I often hear<br>
> mentioned is actual performance should be ~85%. of theoretical performance<br>
> is that a realistic number your experience?<br>
><br>
> I don't want this to be a discussion of what could be wrong at this point,<br>
> we will get to that in future posts, I assure you!<br>
><br>
> --<br>
> Prentice<br>
><br>
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