AMD Rome Second Generation EPYC Review: 2x 64-core Benchmarked
by Johan De Gelas on August 7, 2019 7:00 PM ESTHPC: NAMD
Developed by the Theoretical and Computational Biophysics Group at the University of Illinois Urbana-Champaign, NAMD is a set of parallel molecular dynamics codes for extreme parallelization on thousands of cores. NAMD is also part of SPEC CPU2006 FP. In contrast with previous FP benchmarks, the NAMD binary is compiled with Intel ICC and optimized for AVX and AVX-512.
The NAMD binary is compiled with Intel ICC, optimized for AVX and mostly single preciscion floating point (fp32). For our testing, we used the "NAMD_2.13_Linux-x86_64-multicore" binary. At some point we want to use this test with AOCC or similar AMD optimized binary, but were unable to do so for this review.
We used the most popular benchmark load, apoa1 (Apolipoprotein A1). The results are expressed in simulated nanoseconds per wall-clock day. We measure at 500 steps.
Even without AVX-512 and optimal AVX optimization, the 7742 is already offering the same kind of performance as an ultra optimized Intel binary on top of the top of the line Xeon 8280. When do an apples-to-apples comparison, the EPYC 7742 is no less than 43% faster.
AMD claims a 35% advantage (3.8 ns/days vs 2.8 ns/days) and that seems to confirm our own preliminary benchmarking.
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Zoolook - Saturday, August 10, 2019 - link
It's been a pretty good investment for me, bought at 8$ two years ago, seems like I'll keep it for a while longer.CheapSushi - Wednesday, August 7, 2019 - link
It's glorious...one might say.... even EPYC.abufrejoval - Wednesday, August 7, 2019 - link
Hard to believe a 64 core CPU can be had for the price of a used middle class car or the price of four GTX 2080ti.Of course once you add 2TB of RAM and as many PCIe 4 SSDs as those lanes will feed, it no longer feels that affordable.
There is a lot of clouds still running ancient Sandy/Ivy Bridge and Haswell CPUs: I guess replacing those will eat quite a lot of chips.
And to think that it's the very same 8-core part that powers the engire range: That stroke of simplicity and genius took so many years of planning ahead and staying on track during times when AMD was really not doing well. Almost makes you believe that corporations owned by share holders can actually sometimes actually execute a strategy, without Facebook type voting rights.
Raising my coffee mug in a salute!
schujj07 - Thursday, August 8, 2019 - link
Sandy Bridge maxed out at 8c/16t.Ivy Bridge maxed out at 15c/30t.
Haswell maxed out at 18c/36t.
That means that a single socket Epyc 64c/128t can give you more CPU cores than a quad socket Sandy Bridge (32c/64t) or Ivy Bridge (60c/120t) and only a few less cores that a quad socket Haswell (72c/144t).
Eris_Floralia - Wednesday, August 7, 2019 - link
This is what we've all been waiting for!Eris_Floralia - Wednesday, August 7, 2019 - link
Thank you for all the work!quorm - Wednesday, August 7, 2019 - link
Given the range of configurations and prices here, I don't see much room for threadripper. Maybe 16 - 32 cores with higher clock speeds? Really wondering what a new threadripper can bring to the table.willis936 - Wednesday, August 7, 2019 - link
A reduced feature set and lower prices, namely.quorm - Wednesday, August 7, 2019 - link
Reduced in what way, though? I'm assuming threadripper will be 4 chiplets, 64 pcie lanes, single socket only. All ryzen support ecc.So, what can it offer? At 32 cores, 8 channel memory becomes useful for a lot of workloads. Seems like a lot of professionals would just choose epyc this time. On the other end, I don't think any gamers need more than a 3900x/3950x. Is threadripper just going to be for bragging rights?
quorm - Wednesday, August 7, 2019 - link
Sorry, forgot to add, 3950x is $750, epyc 7302p is $825. Where is threadripper going to fit?