Energy Consumption

We tested the energy consumption of our servers for a one-minute period in several scenario. The first scenario is the point where the server under testing performs best in MySQL: the highest throughput just before the response time goes up significantly. 

To test the power usage of the FPU, we measure the power consumption when POV-Ray was using all available threads. 

SKU TDP
(on paper)
spec
Idle
Server

W
MySQL
Best Throughput
at Lowest Resp. Time (*)
(W)
POV-Ray
100% CPU load
Dual Xeon E5-2699 v4 2x145 W 106 412 425
Dual Xeon 8176  2x165W 190 300 453
Dual EPYC 7601 2x180W 151 321 327

Both the Xeon 8176 and Dual EPYC server had a few more additional components (a separate 10 GBe card for example) than the Dual Xeon E5-2699v4 system, but that does not fully explain why idle power is so much higher, especially on the Dual Xeon 8176. We lacked the time to fully investigate this, and the last two systems have relatively new firmware.

The only conclusion that we can draw so far, is that the EPYC 7601 is likely to draw more power when running integer applications, while the rather wide FP units of the Intel CPUs are real power hogs even if they do not run heavy AVX applications. To be continued...

Floating Point performance Closing Thoughts
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  • Nenad - Thursday, July 20, 2017 - link

    Interesting SPECint2006 results:
    - Intel in their slide #9 claims that Intel 8160 is 2% faster than EPYC 7601
    - Anandtech in article tests that EPYC 7601 is 42% faster than Intel 8176

    Those two are quite different, even if we ignore that 8176 should be faster than 8160. In other words, those Intel test results look very suspicious.
    Reply
  • twtech - Thursday, July 20, 2017 - link

    I'd really like to see some compile-time benchmarks for these CPUs.

    For my own particular interests, time taken to do a full recompile of the Unreal 4 engine from source would be very useful. But even something more generic like the Linux kernel compiles per hour benchmark could serve as a useful point of reference.
    Reply
  • szupek - Friday, July 21, 2017 - link

    Meanwhile, the entire world still runs on IBM's DB2 for Datbases and IBM's Z/AS400 Mainframes. The fastest database in the world, by far...oh and the most secure (it's only hackable by standing in front of the console, seriously). Every single credit card transaction. Every single plain ticket. Most medical records and all of wall street. Yup. IBM still owns. So much that most of commenters probably have no idea just how big IBM truly is. If you care about Database speed & security, these processors shouldn't appeal to you. Reply
  • stevefan1999 - Saturday, July 22, 2017 - link

    It's impossible for AMD to win completely.

    Remember kids, public cloud service providers such as Amazon(AWS), Google(GCP) and Joyent would still stick with Intel due to not only the compatibility issues like ecosystem and vendor inconsistency, but also the VM migration and security and module issues, all mentioned in the presentation slides presented by Intel. They are a very serious matter, as they, the public cloud services, are powering the Internet we use everyday, so being stable, consistent and be able to serve a good amount of SLA is vital to the public cloud, we wouldn't expect them to play with the new lad in the hood, the EPYC.

    IIRC only the Microsoft(Azure) are using AMD server CPUs partially in some of their datacenters, running various Linux and Windows VMs using Hyper-V, and they have been performing quite well

    The cloud services are exploding every year, but with what I've said, I doubt AMD could even kick in the first door at least for 3 to 4 years. This is still a big-win for Intel and what manipulations will Intel do I don't know.

    On the other hand, Intel has failed to service the desktop market and they're figuring out how to hold their asses on the Internet infrastructure, never had them know the crusade of EPYC will come this fast.

    The server market is quite a big meat, it's a 21 bil market, cool right? But that you will have guaranteed 'server upgrade' every year, is a bigger matter, as those server CPUs are designated to be disposed given the wattage and performance per dollar is lower on the newer CPUs. Those god-damn server operators will keen to replace their CPU (and therefore some serious metal pollution issues). Intel has been exploiting this and gained a big hurdle of money and therefore had their ecosystem grown. This is how Intel defends their platform by vendor lock-in, pathetic.

    AMD is now being performance and cost competitive to Intel, but it's still dead in the High Performance Computing campaign unless AMD could provide higher frequencies. Well I have to say I know nothing about HPC, but I remembered the Bulldozer architecture of AMD is actually targeted and marketed for HPC! That's why AMD failed in general-purpose computing market and started the downfall of AMD/Domination of Intel 5 years ago. Even though we know the fate of Bulldozer, but hopefully AMD could still scrap some of the HPC goodies of Bulldozer out and benefits the mankind by accelerating researches such as finding the cures for cancer or solving some precise physics and mathematics.

    Well, anyway the cloud, the HPC and the server market are the last resort for Intel and they will definitely hold their last ground. Good luck AMD on crushing the mean and obese Intel!
    Reply
  • errorr - Sunday, July 23, 2017 - link

    For all the talk about speed and efficiency the problem is about $$$. The sad fact is that what matters most isn't even the price of the cpus which is chump change in the grand scheme of things but how the software licensing costs are determined. Per core or per socket software pricing will matter a lot. The software companies will decide how successful EPYC is. I have a feeling they will be biased slightly toward AMD at the beginning as it is in their interest to foster competition for Intel, or if they are not forward looking enough the end customers might argue that the competition will benefit the SW companies in the long run by continuing to push competition. Reply
  • msroadkill612 - Thursday, July 27, 2017 - link

    Whatever, its all pointless if the competition can read your secrets, which is a matter very close to the hearts of the cheque signers.

    AMD seem to have something very superior to offer in that department.
    Reply
  • qweqwe - Tuesday, August 08, 2017 - link

    we just did some heavy inhouse hpc-tests with epyc against diff. intel servers.
    the epyc is the clear winner in terms of performance and power consumption when it
    comes to hand-tuned parallel-vector-code examples.
    not bad amd !
    Reply
  • readonly1 - Friday, October 27, 2017 - link

    qweqwe, I totally agree with you. Our inhouse HPC tests get the similar conclusion, after comparing AMD Epyc 7351 (dual socket, 32 cores, 2400Mhz) and Intel SKylake 6154 (dual socket, 36 cores, 3000Mhz). I think AMD clearly wins in the memory bandwidth, which is extremely important for HPC computation. Reply
  • msroadkill612 - Monday, November 13, 2017 - link

    7/11/2017 "Microsoft is already deploying AMD's EPYC in their Azure Cloud Datacenters."

    Interesting. As i have been theorising, a possible reason for the absence of retail epyc is not supply, but demand.

    A single sale can soak up production runs.

    If so tho, not much sign of big revenues from it yet, but there are other explanations for that. Contra processors for development work e.g.
    Reply

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