I repeat the sending of the my message because don't see returned to me beowulf
message
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Returning to the first message:
> Also regarding compute power, it would be interesting to see a comparison
> of a single socket of these versus Xeon Phi rather than -v4 or -v5 Xeon.
I partially disagree w/general discussion direction. AMD Epyc looks as
excellent CPUs for datacenters. But if we say about Beowulf and HPC, we must
start 1st of all not from SPECfp_rate, but simple from FLOPS per cycle for
core, or somes like Linpack, dgemm or like other tests.
OK, it's known that Zen core support AVX2 only via 128 bits base, and gives
only 8 DP FLOPS per cycle (see
http://www.linleygroup.com/mpr/article.php?id=11666
or
https://www.hotchips.org/wp-content/uploads/hc_archives/hc28/HC28.23-Tuesday-Epub/HC28.23.90-High-Perform-Epub/HC28.23.930-X86-core-MikeClark-AMD-final_v2-28.pdf
Broadwell core gives 16 FLOPS/cycle, and Skylake-SP 32 FLOPS/cycle w/AVX512.
Therefore SPECfp_rate2006 may be good for Epyc 7601 because of 32 cores per CPU
instead of 22 cores for Broadwell Xeon E5-2699A v4. Xeon Phy KNL cores also
gives 32 DP FLOPS per cycle. By my opinion, it's necessary to wait results of
normal HPC tests.
Mikhail Kuzminsky
Mikhail Kuzminsky
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