On Wed, Jun 16, 2021 at 2:16 PM Prentice Bisbal via Beowulf < beowulf@beowulf.org> wrote:
> Last fall I evaluated potential new cluster nodes for a large cluster > purchase using the HPL benchmark. I compared a server with dual AMD EPYC > 7H12 processors (128) cores to a server with quad Intel Xeon 8268 > processors (96 cores). I measured 5,389 GFLOPS for the Xeon 8268, and > only 3,446.00 GFLOPS for the AMD 7H12. That's LINPACK score that only > 64% of the Xeon 8268 system, despite having 33% more cores. > Most of the workloads we see on our clusters have arithmetic intensities much lower than LINPACK's, so all that extra compute gets starved by lack of memory bandwidth.
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