i can't speak to AMD, but using HPL 2.1 on Intel using the Intel compiler and the Intel MKL, i can hit 90% without issue. no major tuning either
if you're at 33% i would be suspect of your math library On Thu, Feb 22, 2018 at 9:37 AM, Prentice Bisbal <pbis...@pppl.gov> wrote: > Beowulfers, > > In your experience, how close does actual performance of your processors > match up to their theoretical performance? I'm investigating a performances > issue on some of my nodes. These are older systems using AMD Opteron 6274 > processors. I found literature from AMD stating the theoretical performance > of these processors is 282 GFLOPS, and my LINPACK performance isn't coming > close to that (I get approximately ~33% of that). The number I often hear > mentioned is actual performance should be ~85%. of theoretical performance > is that a realistic number your experience? > > I don't want this to be a discussion of what could be wrong at this point, > we will get to that in future posts, I assure you! > > -- > Prentice > > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
