OpenSSL is widely used to secure communications between servers. This is an important protocol in many server stacks. We first look at our sign tests:
Here are the verify results:
OpenSSL is a workload that we see quite often in the embedded space as a component of a larger application. Performance is still above the Intel Xeon Silver 4108 8-core mainstream part. That is impressive since the AMD EPYC 3251 has a lower TDP and is a significantly more compact package.
UnixBench Dhrystone 2 and Whetstone Benchmarks
Some of the longest-running tests at STH are the venerable UnixBench 5.1.3 Dhrystone 2 and Whetstone results. They are certainly aging, however, we constantly get requests for them, and many angry notes when we leave them out. UnixBench is widely used so we are including it in this data set. Here are the Dhrystone 2 results:
And the whetstone results:
One will hopefully see a pattern on these benchmarks which is the key takeaway. The AMD Zen architecture underpinning the AMD EPYC 3251 is extremely competitive with Intel Broadwell and Skylake generations in performance. AMD is not entering the market with a second-rate design, this 55W TDP part is competitive with much more expensive Intel chips.
GROMACS STH Small AVX2/ AVX-512 Enabled
We have a small GROMACS molecule simulation we previewed in the first AMD EPYC 7601 Linux benchmarks piece. In Linux-Bench2 we are using a “small” test for single and dual socket capable machines. Our medium test is more appropriate for higher-end dual and quad socket machines. Our GROMACS test will use the AVX-512 and AVX2 extensions if available.
The AMD EPYC 3251 performance is solid compared to the Intel Xeon Silver line. These findings in the AVX-512 enabled GROMACS again confirm that Intel is “sandbagging” performance specs of the Xeon D-2100 series. We were the first to report in our piece Intel Xeon D-2183IT Benchmarks and Review 16C SoC an AVX-512 Monster that the math units in the D-2100 series are more like the Intel Xeon Gold 6100 series than the Xeon Gold 5100, Silver, and Bronze CPUs. As a result, the AMD EPYC 3251 is more akin to the single FMS AVX-512 Intel competition.
Chess is an interesting use case since it has almost unlimited complexity. Over the years, we have received a number of requests to bring back chess benchmarking. We have been profiling systems and are ready to start sharing results:
Here one can see that the performance is grouped with our other 8 core CPU results. The AMD EPYC 3251 notches a small victory over the more expensive Intel Xeon Silver 4110 8-core mainstream CPU which is certainly an accomplishment.
The bottom line is this. If you are looking for an 8 core embedded CPU, the AMD EPYC 3251 is right with the Intel alternatives in terms of performance. That is doubly impressive since the memory bandwidth with dual DDR4 channels is more akin to the Intel Xeon D-1500 series, which it easily outpaces core for core.
Next, we are going to look at the power consumption of the chip. We are going to follow that with a discussion of the chip in relation to other chips in the market. We will end with our final thoughts on the AMD EPYC 3251.