1. Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

AMD Demos 48-core ''Magny-Cours'' System, Details Architecture

Discussion in 'News' started by btarunr, Aug 26, 2009.

  1. btarunr

    btarunr Editor & Senior Moderator Staff Member

    Joined:
    Oct 9, 2007
    Messages:
    28,562 (11.24/day)
    Thanks Received:
    13,644
    Location:
    Hyderabad, India
    Earlier slated coarsely for 2010, AMD fine-tuned the expected release time-frame of its 12-core "Magny-Cours" Opteron processors to be within Q1 2010. The company seems to be ready with the processors, and has demonstrated a 4 socket, 48 core machine based on these processors. Magny Cours holds symbolism in being one of the last processor designs by AMD before it moves over to "Bulldozer", the next processor design by AMD built from ground-up. Its release will provide competition to Intel's multi-core processors available at that point.

    AMD's Pat Conway at the IEEE Hot Chips 21 conference presented the Magny-Cours design that include several key design changes that boost parallelism and efficiency in a high-density computing environment. Key features include: Move to socket G34 (from socket-F), 12-cores, use of a multi-chip module (MCM) package to house two 6-core dies (nodes), quad-channel DDR3 memory interface, and HyperTransport 3 6.4 GT/s with redesigned multi-node topologies. Let's put some of these under the watch-glass.

    [​IMG]

    Socket and Package
    Loading 12 cores onto a single package and maintaining sufficient system and memory bandwidth would have been a challenge. With the Istanbul six-core monolothic die already measuring 346 mm² with a transistor-load of 904 million, making something monolithic twice the size is inconceivable, at least on the existing 45 nm SOI process. The company finally broke its contemptuous stance on multi-chip modules which it ridiculed back in the days of the Pentium D, and designed one of its own. Since each die is a little more than a CPU (in having a dual-channel memory controller, AMD chooses to call it a "node", a cluster of six processing cores that connects to its neighbour on the same package using one of its four 16-bit HyperTransport links. The rest are available to connect to neighbouring sockets and the system in 2P and 4P multi-socket topologies.

    The socket itself gets a revamp from the existing 1,207-pin Socket-F, to the 1,974-pin Socket G34. The high pin-count ensures connections to HyperTransport links, four DDR3 memory connections, and other low-level IO.

    [​IMG] [​IMG]

    Multi-Socket Topologies
    A Magny-Cours Opteron processor can work in 2P and 4P systems for up to 48 physical processing cores. The multi-socket technologies AMD devised ensures high inter-core and inter-node bandwidth without depending on the system chipset IO for the task. In the 2P topology, one node from each socket uses one of its HyperTransport 16-bit links to connect to the system, the other to the neighbouring node on the package, and the remaining links to connect to the nodes of the neighbouring socket. It is indicated that AMD will make use of 6.4 GT/s links (probably generation 3.1). In 4P systems, it uses 8-bit links instead, to connect to three other sockets, but ensures each node is connected to the other directly, on indirectly over the MCM. With a total of 16 DDR3 DCTs in a 4P system, a staggering 170.4 GB/s of cumulative memory bandwidth is achieved.

    [​IMG]

    Finally, AMD projects a up to 100% scaling with Magny-Cours compared to Istanbul. Its "future-silicon" projected for 2011 is projected to almost double that.

    [​IMG]

    Source: INPAI
     
    Last edited: Aug 26, 2009
  2. FreedomEclipse

    FreedomEclipse ~Technological Technocrat~

    Joined:
    Apr 20, 2007
    Messages:
    13,708 (5.05/day)
    Thanks Received:
    2,277
    Christ on a bike 48core??? F@H Here i come!!
     
    Roph says thanks.
  3. mdm-adph

    mdm-adph New Member

    Joined:
    Mar 28, 2007
    Messages:
    2,478 (0.91/day)
    Thanks Received:
    340
    Location:
    Your house.
    Bah -- it's an impressive setup, but you could probably still do more folding with a few GTX 295's, right?
     
  4. AlienIsGOD

    AlienIsGOD

    Joined:
    Aug 9, 2008
    Messages:
    3,447 (1.54/day)
    Thanks Received:
    1,491
    Its still impressive nonetheless. A native 12 core Proc OHHEMMGEE!!!
     
    Crunching for Team TPU
  5. A Cheese Danish

    A Cheese Danish

    Joined:
    Nov 18, 2006
    Messages:
    2,963 (1.03/day)
    Thanks Received:
    413
    Location:
    your local vending machine
    Hooray for 12 core Opty's! :D
    I may have to get a few :rolleyes:
     
  6. Mussels

    Mussels Moderprator Staff Member

    Joined:
    Oct 6, 2004
    Messages:
    42,230 (11.60/day)
    Thanks Received:
    9,529
    Jeebers help us all...
     
  7. human_error

    human_error

    Joined:
    Nov 10, 2008
    Messages:
    1,739 (0.81/day)
    Thanks Received:
    477
    Actually it is 2 native 6 cores in one package like the Core 2 Quad processors (which were 2 dual cores in one package). This means that the shared L3 is shared between two sets of six cores and not across all 12 cores and that each 6 cores only has dual channel memory as opposed to having quad channel across 12 cores - it just means if one core needs more bandwidth than dual channel can provide then it would bottleneck but in such a multithreaded environment anything running on that would have to be designed to run on multi-cpu setups (which would also limit max bandwidth available to one core at a time to be dual channel speeds) anyway.
     
  8. wahdangun

    wahdangun New Member

    Joined:
    Oct 2, 2008
    Messages:
    1,512 (0.69/day)
    Thanks Received:
    114
    Location:
    indonesia ku tercinta
    i think you have a typo, "multi-chip module (MXM)"

    i think it should be MCM not MXM


    MXM is for GPU on laptop
     
  9. Velvet Wafer

    Velvet Wafer New Member

    Joined:
    Jun 16, 2009
    Messages:
    5,123 (2.66/day)
    Thanks Received:
    990
    Location:
    North of Germany
    GIVE IT TO ME!^^

    48 crunching tabs running 24/7 a 3ghz....:eek: YEAH:D
     
  10. tidas

    tidas New Member

    Joined:
    Aug 26, 2009
    Messages:
    1 (0.00/day)
    Thanks Received:
    0
    yes....but can it crysis?
     
  11. Castiel

    Castiel

    Joined:
    May 5, 2008
    Messages:
    3,319 (1.42/day)
    Thanks Received:
    310
    I want one. Would go great with my network design.
     
  12. Mussels

    Mussels Moderprator Staff Member

    Joined:
    Oct 6, 2004
    Messages:
    42,230 (11.60/day)
    Thanks Received:
    9,529
    in software mode, most likely.
     
    tomkaten says thanks.
  13. Breathless New Member

    Joined:
    Oct 6, 2007
    Messages:
    370 (0.15/day)
    Thanks Received:
    35
    what ever happened to "real men use real cores". ;)

    This isn't 12 "real" cores....
     
  14. [I.R.A]_FBi

    [I.R.A]_FBi New Member

    Joined:
    May 19, 2007
    Messages:
    7,664 (2.86/day)
    Thanks Received:
    540
    Location:
    c:\programs\kitteh.exe
    they are real, really glued together ....
     
  15. Mussels

    Mussels Moderprator Staff Member

    Joined:
    Oct 6, 2004
    Messages:
    42,230 (11.60/day)
    Thanks Received:
    9,529
    it is in fact 12 real cores.

    the 'less than real' cores refers to hyperthreading, not the sticky tape approach.
     
  16. mdm-adph

    mdm-adph New Member

    Joined:
    Mar 28, 2007
    Messages:
    2,478 (0.91/day)
    Thanks Received:
    340
    Location:
    Your house.
    No, they are 12 "real" cores, but this isn't a "real" 12-core. Make sense? :laugh:
     
  17. Kitkat New Member

    Joined:
    May 14, 2009
    Messages:
    768 (0.39/day)
    Thanks Received:
    77
    i spit my coffee lol
     
    Kei says thanks.
  18. Velvet Wafer

    Velvet Wafer New Member

    Joined:
    Jun 16, 2009
    Messages:
    5,123 (2.66/day)
    Thanks Received:
    990
    Location:
    North of Germany
    if this isnt a 12 core, core quad wont be a quad;) multipacking makes no difference
     
  19. thezorro

    thezorro New Member

    Joined:
    Aug 10, 2009
    Messages:
    28 (0.01/day)
    Thanks Received:
    1
    intel is losing the war, what happened to the tick tock? or is tic tac?
    just my two cents
     
  20. TheMailMan78

    TheMailMan78 Big Member

    Joined:
    Jun 3, 2007
    Messages:
    21,013 (7.87/day)
    Thanks Received:
    7,558
    Damn it someone beat me to the Crysis joke. Not only that they registered to do it :laugh:

    Dude your lost on this.
     
  21. a111087

    a111087

    Joined:
    Apr 2, 2007
    Messages:
    2,743 (1.00/day)
    Thanks Received:
    194
    Location:
    US
    I wouldn't be so quick about it. from what i've seen, these 12-cores will not come to desktops, not anytime soon, at least.
     
  22. El Fiendo

    El Fiendo

    Joined:
    Aug 22, 2008
    Messages:
    2,305 (1.04/day)
    Thanks Received:
    1,164
    Location:
    Edmonton, Alberta

    Intel's market share: 79.1% in the fourth quarter of 2008
    AMD's market share: 12.8% in the fourth quarter of 2008


    I wish I could lose at girls as well as Intel is said to be losing to AMD. I'd be rolling on a pile of women whilst giggling with glee every night.
     
  23. TheMailMan78

    TheMailMan78 Big Member

    Joined:
    Jun 3, 2007
    Messages:
    21,013 (7.87/day)
    Thanks Received:
    7,558
    You still can with enough methamphetamines.
     
  24. El Fiendo

    El Fiendo

    Joined:
    Aug 22, 2008
    Messages:
    2,305 (1.04/day)
    Thanks Received:
    1,164
    Location:
    Edmonton, Alberta
    So copious amounts of meth is Intel's key to success as well then? Or is that strictly a me only scenario?
     
  25. twilyth Guest

    Yea AMD! W00T!

    But what I really want to say is directed at themailman.

    Are you listening?

    That avatar is genuinely disturbing.

    I'll let you know in a couple days if that is compliment or not.

    Carry on.
     

Currently Active Users Viewing This Thread: 1 (0 members and 1 guest)

Share This Page