So I just rebuilt HPL using the ACML 6.1.0 libraries with GCC 6.1.0, and
I'm now getting 197 GFLOPS, so clearly there's a problem with my
OpenBLAS build. I'm going to try building OpenBLAS without the dynamic
arch support on the machine where I plan on running my tests, and see if
that version of the library is any better.
Prentice
On 02/22/2018 09:37 AM, Prentice Bisbal 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!
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