AMD Shows of Epyc Datacenter CPU

Discussion in 'HardForum Tech News' started by FrgMstr, May 16, 2017.

  1. FrgMstr

    FrgMstr Just Plain Mean Staff Member

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    AMD just got finished off showing off some of the basics about its EPYC datacenter processor. It is based on the Zen architecture goodness, and is in a nutshull, four Ryzen CPUs on a single package for server. So you get 32 Cores under one integrated heat spreader with support for 4TB of memory and 128 native PCIe lanes.

    Pictures on the news page.
     
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  2. STR

    STR Gawd

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    "Epyc"?
    Cringeworthiest of names.

    Interesting design though. Is there a shared on-board cache or will it have to go all the way out to the system RAM if a thread needs something running on another die?

    Also, that is a big ass heatspreader.
     
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  3. Teenyman45

    Teenyman45 2[H]4U

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    Just imagine if that was PGA and had a bent pin or two somewhere during the install.
     
  4. biggen

    biggen Kyle's Personal Blog is Awesome

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    Gonna be tough to break into the server market. No sys admin ever got fired for buying Intel.
     
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  5. zerogg

    zerogg Limp Gawd

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    Yeah, the name is terrible, but hopefully it will be a performer. The additional ram channels allows servers to have a higher ram capacity, or higher capacity per size of dimm. For virtualization workloads and other memory intensive configurations, the price of memory will outweigh all the other components. Allowing us to use more of the cheaper smaller modules, or higher total capacity is a big deal. Its why we are going to be testing out the platform when its released.
     
  6. daglesj

    daglesj [H]ardness Supreme

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    Gonna be some interesting kit to buy on Ebay in a few years time.
     
  7. grtitan

    grtitan Telemetry is Spying on ME!

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    Well, the million dollars question, can it run Crysis? :clown:
     
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  8. TMCM

    TMCM [H]ard|Gawd

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    Beat me to it
     
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  9. Kranium

    Kranium Limp Gawd

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    That delidded shot reminds me of Presler's "dual" core CPUs *shudders*. I'm sure this isn't a rush job like those were though.
     
  10. prime2515102

    prime2515102 [H]ard|Gawd

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    They are already in the server market.
     
  11. SighTurtle

    SighTurtle [H]ard|Gawd

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  12. JackNSally

    JackNSally Limp Gawd

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    I believe half of each dies (dice?), there are 4 dies (dice?) in this chip, PCI-E lanes are used for some inter-die 'fabric'. I would say hypertransport over PCI-E but I'm not an expert in this.
     
  13. Mackintire

    Mackintire 2[H]4U

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    Jim Keller was involved. = Probably won't suck.
     
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  14. Elf_Boy

    Elf_Boy 2[H]4U

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    What socket do they use?

    How come they get PCIE lanes per core?
     
  15. STR

    STR Gawd

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    It's called SP3r2 or maybe SP4 (my Google-Fu is too weak, or perhaps the info isn't out there yet). It's LGA and has 4,094 pins.

    That is not a typo.
     
  16. PhotoBobBarker

    PhotoBobBarker [H]Lite

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    Any word on price or if this might make it to the workstation market or is it Server only?

    I'm still on a Dell Precision 490 with two E5335s,and a 660ti... I think it might be time for an upgrade.
     
  17. SighTurtle

    SighTurtle [H]ard|Gawd

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  18. Zuul

    Zuul Gawd

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    It can run ALL the Crysisees!
     
  19. capt_cope

    capt_cope Gawd

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    *COUGH*Itanium*COUGH*
     
  20. Quartz-1

    Quartz-1 [H]ardness Supreme

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    Windows client has a limit of two processors so the answer will depend upon either Microsoft lifting that restriction or presenting itself to Windows as one or two CPUs.

    Was a massive success in the DEC VMS sphere.
     
  21. Hisshadow

    Hisshadow n00b

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    Now see, THIS is the desktop cpu that I would be excited about coming from amd.

    Leave it to them, to totally miss out on my purchasing power... by not making it a desktop cpu....
     
  22. biggen

    biggen Kyle's Personal Blog is Awesome

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  23. sirmonkey1985

    sirmonkey1985 [H]ard|DCer of the Month - July 2010

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    each cluster of dies shows up as a single cpu.. same design they used with magney-cour which was 2 x 6 core dies only with a better interconnect design between the dies. even the 12 and 16 core FX based server cpu's which no one bought used the same design.
     
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  24. Mackintire

    Mackintire 2[H]4U

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  25. XViper

    XViper Gawd

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    It's good that AMD is trying to market to this area. From what I recently heard, several companies are switching to Ryzen servers for cost and the amount of cores you get.
     
  26. Twisted Kidney

    Twisted Kidney 2[H]4U

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    No sys admin got fired for the status quo, either.

    Far too often: Big changes = big problems.
     
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  27. Gigus Fire

    Gigus Fire 2[H]4U

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    No. The Epyc processor can only run crisys
     
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  28. andrewaggb

    andrewaggb Limp Gawd

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    They should be ideal datacenter cpu's for at least some workloads. Lots of cores and Lots of ram is pretty what every cloud provider wants. It's just proving they are reliable enough for datacenter use.
     
  29. Pusher of Buttons

    Pusher of Buttons [H]ard|Gawd

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    I'd be real curious if (and I know jack about CPU architecture beyond the basics) if they could pump up the number of threads per core in some odd configuration. Given that MS is licensing per-physical core now, bumping up the logical core count without changing the physical core number could actually lead to some cost savings if moving beyond 2 thread per core is even an realistic option.
     
  30. Grimlaking

    Grimlaking 2[H]4U

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    If you're having a hard time fitting enough compute into your racks then this solution is amazing. Throw 4 of those into a 4 U chassis, get 128 Physical 256 Logical CPU's, along with 16TB of ram.

    Makes by 36 core 72 thread 512gb ram box's seem small.

    Not to mention at max load of ram I'd have.. 62 gig per logical core of ram.. holy eff.. the memory MIGHT be overkill. ;)

    But the PCIE lanes are a freaking blessing to people that need REALLY HIGH SPEED Physical I/O. That's not me. I need low throughput but I achieve that with a couple of fiber cards going to my storage array. My use case right now has no place for that many PCIE lanes.

    But imagine it from the case of serving desktop systems via VDI. You could have a bank of relatively high speed video cards being sliced and allocated to VDI users allowing 3d rendering virtually. Man that could get really sweet for render farms too.
     
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  31. Grimlaking

    Grimlaking 2[H]4U

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    Right now Vmware and others are still pricing per CPU Socket. That makes these CPU's Sweet sweet free capacity. ;)
     
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  32. raz-0

    raz-0 [H]ardness Supreme

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    No, but they also haven't been fired for buying AMD either. We still have some AMD based servers cranking away. The only criteria to date is going ot be does it run x86 linux VMs with good cost per VM and good power and HVAC use per sqft.
     
  33. ir0nw0lf

    ir0nw0lf [H]ardness Supreme

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    More or less than Threadripper? :p
     
  34. Pusher of Buttons

    Pusher of Buttons [H]ard|Gawd

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    They were going to call it ThreadGrindr but realized that infringed on a copyright.
     
  35. griff30

    griff30 I Lower the Boom!

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    Now to see what trickles down to a real-world desktop environment..
     
  36. Crimson

    Crimson Gawd

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    Unlike MS Server 2016 which charges by core :(
     
  37. STR

    STR Gawd

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    Tough call. On one hand, "Epyc" sounds like some off brand gamer accessory. On the other, not only is "threadripper" a dumb name, but they couldn't even keep the "y" consistent. You'd think they'd have crammed one in there. "Threadrippyr"? It's not like they would have made it sound even worse.
     
  38. wolfofone

    wolfofone Gawd

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    From what i remember, Each chip gives up 64 lanes of PCI-E to the inter-socket Fabric. So the dual socket system will have 128 lanes for devices but it's 64 from each socket. For inter-die fabric... I don't remember if AMD has detailed that.
     
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  39. nutzo

    nutzo [H]ardness Supreme

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    MS is getting greedy with their licensing changes. Instead of simply buying a server based on overall performance, I now need to consider how many cores.

    It will likely push me to higher clock speeds and less cores on any new server purchas, just the opposite of my last couple servers (lower clock speeds but more cores)
     
  40. Trepidati0n

    Trepidati0n [H]ardForum Junkie

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    Business are getting really good at understand the total cost of operation. Operations per Watt has a very heavy weighting factor when choosing servers. In many cases some cities are saying "you can' pump any more water for cooling".