Everything I've learned building the fastest Arm desktop

• HPL-on-Ampere-Altra

  1 6 5.9
  

Caveat: I consider myself a noob at benchmarking, after spending probably 1,000 hours on it over the years.

The CPU benchmark used HPL linpack following a standard-ish Top500-style benchmark, mostly because I think it's fun to see how various single CPU systems compare to historic 'supercomputers' on the official lists.

There are different ways to calculate (and benchmark) flops, the way I'm doing it is with this open source project: https://github.com/geerlingguy/top500-benchmark — which can use OpenBLAS, Blis, or ATLAS, and I've tried all three un-tuned.

I also worked with some Ampere engineers to run their optimized version for Ampere Altra Max: https://github.com/AmpereComputing/HPL-on-Ampere-Altra

On their own server systems with 8 channels of memory they topped out around 1.6 Tflops. There are other tests you can run and get more or less Tflops, but I based my own results on the top500 test.

See more discussion about the results and testing in the following links:

https://github.com/geerlingguy/top500-benchmark/issues/19

• top500-benchmark

  4 138 7.2 Jinja

  Automated Top500 benchmark for clusters or single nodes.

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