Bulldozer versus Westmere single threaded performance

Article: AMD's Bulldozer Microarchitecture
By: slacker (s.delete@this.lack.er), September 2, 2010 4:59 am
Room: Moderated Discussions
Jack (jumpingjack6@verizon.net) on 9/1/10 wrote:
---------------------------
>I can help after a bit of research, Windows XP, Vista, and Win 7 are all three
>'hyperthread' aware, per microsoft. However, both XP and Vista schedulers a bit
>lacking in general. I have not checked Linux.

Both the older O(1) scheduler and newer CF scheduler for linux have knowledge/support for SMT (specifically, 'hyperthreading' in Intel processors). It's likely that IBM tweaks the scheduler for deployment on their SMT-capable systems.
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TopicPosted ByDate
Bulldozer article onlineDavid Kanter2010/08/30 10:44 PM
  Bulldozer article onlineTriskaine2010/08/31 12:14 AM
  Bulldozer article online?2010/08/31 01:39 AM
    Bulldozer article onlinehobold2010/08/31 10:00 AM
    Dispatch groupsDavid Kanter2010/08/31 11:52 AM
      Dispatch groupsIntelUser20002010/08/31 01:40 PM
        Dispatch groupsDavid Kanter2010/08/31 02:22 PM
      Dispatch groupsarb2010/08/31 02:11 PM
        Dispatch groupsredpriest2010/08/31 07:46 PM
      Dispatch groups?2010/08/31 11:41 PM
        Dispatch groupsDavid Kanter2010/09/01 08:15 AM
          Dispatch groups?2010/09/01 09:03 AM
  Bulldozer article onlineAlex2010/08/31 02:45 AM
    Bulldozer article onlineIntelUser20002010/08/31 05:46 AM
      merci (NT)Alex2010/08/31 09:02 AM
    Bulldozer article onlinehobold2010/08/31 09:56 AM
      Bulldozer article onlineDavid Kanter2010/08/31 11:53 AM
  Bulldozer article onlinesomeone2010/08/31 05:09 AM
    Bulldozer article onlineIntelUser20002010/08/31 05:41 AM
      Thanks (NT)someone2010/08/31 05:52 AM
  Bulldozer article onlineRohit2010/08/31 05:13 AM
    Extremely unlikelyDaniel Bizó2010/08/31 02:00 PM
      Bulldozer versus Westmere single threaded performanceMark Roulo2010/08/31 02:35 PM
        Bulldozer versus Westmere single threaded performanceHoward Chu2010/08/31 06:25 PM
        Bulldozer versus Westmere single threaded performanceAndreas2010/09/01 12:01 AM
          Bulldozer versus Westmere single threaded performanceFoo_2010/09/01 01:11 AM
            Bulldozer versus Westmere single threaded performanceJack2010/09/01 09:08 PM
              Bulldozer versus Westmere single threaded performanceslacker2010/09/02 04:59 AM
                Bulldozer versus Westmere single threaded performanceJack2010/09/02 04:14 PM
        Bulldozer versus Westmere single threaded performanceRichard Cownie2010/09/01 03:41 AM
          Bulldozer versus Westmere single threaded performance?2010/09/01 05:10 AM
            Bulldozer versus Westmere single threaded performanceRichard Cownie2010/09/01 07:11 AM
              Bulldozer versus Westmere single threaded performanceDavid Kanter2010/09/01 07:50 AM
          Bulldozer versus Westmere single threaded performanceMark Roulo2010/09/01 08:14 AM
            Bulldozer versus Westmere single threaded performanceRichard Cownie2010/09/01 08:33 AM
      There is no 20% penalty of two threads compared to single core - it's 10%Heikki Kultala2010/09/02 09:39 PM
        There is no 20% penalty of two threads compared to single core - it's 10%Azazel2010/09/02 11:35 PM
          There is no 20% penalty of two threads compared to single core - it's 10%?2010/09/03 01:40 AM
          There is no 20% penalty of two threads compared to single core - it's 10%Heikki Kultala2010/09/03 02:49 AM
            There is no 20% penalty of two threads compared to single core - it's 10%Azazel2010/09/03 06:31 AM
          There is no 20% penalty of two threads compared to single core - it's 10%MS2010/09/03 05:27 AM
          Don't read too much into it...David Kanter2010/09/03 02:14 PM
            Don't read too much into it...DC2010/09/05 10:07 AM
  Bulldozer article onlineIan Ollmann2010/08/31 04:07 PM
    Bulldozer article onlineMatt Waldhauer2010/09/05 03:10 AM
      Bulldozer article onlinehobold2010/09/05 07:19 AM
        Bulldozer article onlineDC2010/09/05 10:12 AM
          Bulldozer article onlineMichael S2010/09/05 11:27 AM
            Bulldozer article onlineBrett2010/09/05 02:01 PM
          Bulldozer article onlinesomeone2010/09/05 12:56 PM
            Bulldozer article onlineAlex2010/09/05 01:59 PM
              Bulldozer article onlinesomeone2010/09/05 02:05 PM
                Bulldozer article onlineDC2010/09/06 06:38 AM
                  Bulldozer article onlinesomeone2010/09/06 07:24 AM
                  Bulldozer article onlineDavid Kanter2010/09/06 04:12 PM
                    Bulldozer article onlineEduardoS2010/09/06 05:21 PM
                    Bulldozer article onlineanon2010/09/06 05:26 PM
                      Bulldozer article onlineDavid Kanter2010/09/06 06:55 PM
                        Bulldozer article onlineanon2010/09/06 09:49 PM
                          Bulldozer article onlineDavid Kanter2010/09/06 09:57 PM
                            Bulldozer article onlineJack2010/09/07 08:55 PM
                            Bulldozer article onlineslacker2010/09/08 04:53 AM
            Bulldozer article onlineDC2010/09/06 06:43 AM
              Bulldozer article onlineMegol2010/09/06 07:27 AM
              Bulldozer article onlinesomeone2010/09/06 07:53 AM
                Why SOIDavid Kanter2010/09/06 04:19 PM
              Bulldozer article onlineJack2010/09/07 09:16 PM
                Bulldozer article onlineslacker2010/09/08 07:05 AM
                  Bulldozer article onlinesomeone2010/09/08 08:35 AM
                  Bulldozer article onlineJack2010/09/12 07:26 PM
                Bulldozer article onlinesomeone2010/09/08 08:03 AM
                  Some strawmen will never die (NT)slacker2010/09/08 08:13 AM
                    Yeah, like PD-SOI is worth the effort (NT)someone2010/09/08 08:39 AM
                      PDSOI is worth production dollars; FDSOI & silicon lasing are Intel's wet dreamslacker2010/09/08 09:54 AM
                  Bulldozer article onlineFritz2010/09/22 02:41 AM
                    Bulldozer article onlineanonymous2010/09/22 10:12 AM
                      Bulldozer article onlinesavantu2010/09/22 08:13 PM
      Bulldozer article onlineIan Ollmann2010/09/24 04:50 PM
        Bulldozer article onlineIan Ollmann2010/09/24 05:21 PM
          Bulldozer article onlineEduardoS2010/09/24 07:47 PM
            Bulldozer article onlineMichael S2010/09/25 09:41 AM
            Faster FADDPaul A. Clayton2010/09/25 10:58 AM
              Faster FADDEduardoS2010/09/25 11:07 AM
                Faster FADDPaul A. Clayton2010/09/28 10:29 AM
          Bulldozer article onlineMichael S2010/09/25 09:38 AM
        Bulldozer article onlineDavid Kanter2010/09/25 12:55 AM
        Bulldozer article onlineHans de Vries2010/09/26 05:58 AM
          Bulldozer article onlineDavid Kanter2010/09/26 09:38 AM
            Bulldozer article onlineHans de Vries2010/09/26 01:48 PM
              Bulldozer article onlineEduardoS2010/09/26 02:47 PM
                FP ADDs are not that fastMatt Waldhauer2010/09/30 06:46 AM
                  FP ADDs are not that fastsJ2010/09/30 10:24 AM
                    FP ADDs are not that fastEduardoS2010/09/30 12:41 PM
                      FP ADDs are not that fastrwessel2010/09/30 01:41 PM
                    FP ADDs are not that fastHans de Vries2010/09/30 06:11 PM
                  FP ADDs are not that fastEduardoS2010/09/30 12:43 PM
                    FP ADDs are not that fastMichael S2010/09/30 01:25 PM
                      FP ADDs are not that fastEduardoS2010/09/30 01:57 PM
                      FP ADDs are not that fastEric Quinnell2010/10/01 12:29 PM
                        FP ADDs are not that fastEduardoS2010/10/01 12:40 PM
                          FP ADDs are not that fastDavid Kanter2010/10/01 01:29 PM
                        Delayed post-result shift?Paul A. Clayton2010/10/01 05:14 PM
              Bulldozer article onlineDavid Kanter2010/09/26 02:50 PM
                Fusing into FMAPaul A. Clayton2010/09/27 01:01 PM
                  Fusing into FMAIan Ollmann2010/09/28 03:58 PM
                    Fusing into FMAPaul A. Clayton2010/09/29 06:25 AM
              Bulldozer article onlineMichael S2010/09/26 03:23 PM
                Bulldozer article onlineanonymous2010/09/27 12:38 AM
                  Bulldozer article onlineMichael S2010/09/27 04:00 AM
          Bulldozer article onlineEduardoS2010/09/26 09:51 AM
            Bulldozer article onlineHans de Vries2010/09/26 11:32 AM
          Bulldozer article onlineHans de Vries2010/09/26 11:28 AM
  Bulldozer article onlineMS2010/09/01 05:15 AM
  10h family 4MiB page TLB entriesPaul A. Clayton2010/09/01 05:01 PM
    10h family 4MiB page TLB entriesEduardoS2010/09/01 05:40 PM
      10h family 4MiB page TLB entriesrwessel2010/09/02 03:09 AM
        10h family 4MiB page TLB entriesEduardoS2010/09/02 02:04 PM
  Bulldozer article onlineDan Downs2010/09/02 07:28 AM
    Bulldozer article onlineslacker2010/09/02 07:37 AM
      Bulldozer article onlineDan Downs2010/09/02 09:06 AM
        Bulldozer article onlineDavid Kanter2010/09/02 03:41 PM
          Bulldozer article onlineDan Downs2010/09/02 09:42 PM
    one thread in two cores - NOHeikki Kultala2010/09/02 09:25 PM
      RF portsDavid Kanter2010/09/04 12:32 PM
  Slightly OT, but does iAtom use physical register files (PRF), too ? (NT)Alex2010/09/02 02:49 PM
    AFAIK Atom does not rename registersHeikki Kultala2010/09/03 02:46 AM
      AFAIK Atom does not rename registersAlex2010/09/03 07:41 AM
  FMACs can be ganged together, confirmed already by JF (link inside)Alex2010/09/08 03:44 PM
    FMACs can be ganged together, confirmed already by JF (link inside)David Kanter2010/09/09 06:32 AM
      FMACs can be ganged together, confirmed already by JF (link inside)Triskaine2010/09/09 06:48 AM
        FMACs can be ganged together, confirmed already by JF (link inside)David Kanter2010/09/09 07:11 AM
          FMACs can be ganged together, confirmed already by JF (link inside)arb2010/09/09 08:22 AM
            Bulldozer and AVXDavid Kanter2010/09/09 09:21 AM
          FMACs can be ganged together, confirmed already by JF (link inside)gruehunter2010/09/09 12:08 PM
            FMACs can be ganged together, confirmed already by JF (link inside)David Kanter2010/09/09 03:39 PM
              FMACs can be ganged together, confirmed already by JF (link inside)redpriest2010/09/09 08:56 PM
                FMACs can be ganged together, confirmed already by JF (link inside)Anthony2010/09/10 10:59 AM
                  FMACs can be ganged together, confirmed already by JF (link inside)someone2010/09/10 11:11 AM
      FMACs can be ganged together, confirmed already by JF (link inside)Alex2010/09/10 11:04 AM
    FMACs can be ganged together, confirmed already by JF (link inside) -- Oh No JFFritz2010/09/22 03:37 AM
      FMACs can be ganged together, confirmed already by JF (link inside) -- Oh No JFAnthony2010/09/22 10:01 AM
        FMACs can be ganged together, confirmed already by JF (link inside) -- Oh No JFDavid Kanter2010/09/22 10:22 AM
          FMACs can be ganged together, confirmed already by JF (link inside) -- Oh No JFanon2010/09/22 11:19 AM
            Bulldozer FPDavid Kanter2010/09/22 02:32 PM
              Bulldozer FPEduardoS2010/09/22 03:17 PM
                Bulldozer FPAaron Spink2010/09/23 11:13 AM
                  Bulldozer FPEduardoS2010/09/23 01:04 PM
                Bulldozer FPMichael S2010/09/23 12:26 PM
              Bulldozer FPanonymous2010/09/22 03:35 PM
              Bulldozer FPhobold2010/09/23 07:21 AM
                Bulldozer FPanon2010/09/23 10:59 AM
                  Bulldozer FPEduardoS2010/09/23 01:12 PM
                  Bulldozer FPhobold2010/09/23 01:19 PM
              Bulldozer FPHans de Vries2010/09/23 09:07 AM
                Bulldozer FPEric Bron2010/09/23 10:05 AM
          FMACs can be ganged together, confirmed already by JF (link inside) -- Oh No JFredpriest2010/09/23 04:47 PM
      FMACs can be ganged together, confirmed already by JF (link inside) -- Oh No JFAnthony2010/09/22 10:01 AM
  Bulldozer article onlineMarcal2010/09/29 02:13 AM
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