New article: AMD's Jaguar Microarchitecture

Article: AMD's Jaguar Microarchitecture
By: Linus Torvalds (torvalds.delete@this.linux-foundation.org), April 11, 2014 9:14 am
Room: Moderated Discussions
David Kanter (dkanter.delete@this.realworldtech.com) on April 10, 2014 11:24 pm wrote:
>
> I suspect a large part of this is because Jaguar doesn't have any turbo capabilities
> and the SoC memory controller and fabric is probably more primitive.

Sure, there are probably lots of explanations.

> I expect that in a competently designed SoC, Jaguar should beat out Silvermont-based
> designs. Especially in FP. It's strange to see results otherwise.

But who cares? In real life you get what you get (and Intel simply being better at turbo is part of that), and FP doesn't really matter.

It's worth pointing out that at least for some of the benchmarks (it's unclear whether just the "productivity" ones), Anandtech seems to have forced the CPU's to their rated speed. Which means that Turbo didn't get to play.

On the whole, looking at those benchmark scores, I'd probably say Jaguar perhaps did a little bit better than Silvermont. 3DPM is clearly an outlier and nobody should care about that result anyway, but the fact that Silvermont actually won the Dolphin benchmark is more interesting. Also, the lack of Turbo makes me suspect that Silvermont was somewhat held back in the name of score consistency. So ...

On the whole there's a notable lack of "slam dunk" there, and I do think the CPU side is rather comparable.

Linus
< Previous Post in ThreadNext Post in Thread >
TopicPosted ByDate
New article: AMD's Jaguar MicroarchitectureDavid Kanter2014/04/01 01:19 AM
  New article: AMD's Jaguar MicroarchitectureSHK2014/04/01 06:09 AM
    New article: AMD's Jaguar MicroarchitectureJeff Rupley2014/04/01 07:13 PM
      New article: AMD's Jaguar MicroarchitectureSHK2014/04/02 06:45 AM
        CMOV is 3 operand given register renamingPaul A. Clayton2014/04/02 09:11 AM
          CMOV is 3 operand given register renamingSHK2014/04/02 12:17 PM
            Limited operand tags in issue queue entriesPaul A. Clayton2014/04/02 01:32 PM
        New article: AMD's Jaguar MicroarchitectureLinus Torvalds2014/04/02 12:48 PM
          New article: AMD's Jaguar MicroarchitectureLinus Torvalds2014/04/02 02:32 PM
  New article: AMD's Jaguar MicroarchitectureGeorge2014/04/01 02:10 PM
  New article: AMD's Jaguar Microarchitecturewillmore2014/04/01 06:37 PM
    New article: AMD's Jaguar Microarchitecturewillmore2014/04/01 07:08 PM
    New article: AMD's Jaguar MicroarchitectureNaN2014/04/02 08:58 AM
      New article: AMD's Jaguar MicroarchitectureUnmaskedUnderflow2014/04/04 07:16 AM
        New article: AMD's Jaguar MicroarchitectureLinus Torvalds2014/04/04 08:54 AM
          New article: AMD's Jaguar MicroarchitectureUnmaskedUnderflow2014/04/04 11:45 AM
            New article: AMD's Jaguar MicroarchitectureLinus Torvalds2014/04/04 02:00 PM
              New article: AMD's Jaguar MicroarchitectureNoSpammer2014/04/04 03:15 PM
              New article: AMD's Jaguar MicroarchitectureTREZA2014/04/04 03:18 PM
                New article: AMD's Jaguar MicroarchitectureLinus Torvalds2014/04/04 04:56 PM
                  New article: AMD's Jaguar MicroarchitectureTREZA2014/04/04 05:34 PM
                  New article: AMD's Jaguar MicroarchitectureMichael S2014/04/05 11:02 AM
                  New article: AMD's Jaguar Microarchitecturecomputational_scientist2014/04/05 06:50 PM
                    New article: AMD's Jaguar MicroarchitectureMichael S2014/04/06 01:22 AM
                    New article: AMD's Jaguar MicroarchitectureWilco2014/04/06 05:29 AM
                      New article: AMD's Jaguar Microarchitecturecomputational_scientist2014/04/06 07:33 AM
                        New article: AMD's Jaguar MicroarchitectureWilco2014/04/07 03:12 AM
                          New article: AMD's Jaguar MicroarchitectureMichael S2014/04/07 06:58 AM
                        New article: AMD's Jaguar MicroarchitectureEduardoS2014/04/07 04:34 PM
                      New article: AMD's Jaguar Microarchitecturecomputational_scientist2014/04/06 07:53 AM
                      New article: AMD's Jaguar MicroarchitectureMegol2014/04/06 08:21 AM
                        New article: AMD's Jaguar Microarchitecturenone2014/04/06 09:07 AM
                          New article: AMD's Jaguar MicroarchitectureMichael S2014/04/06 09:23 AM
                        New article: AMD's Jaguar MicroarchitectureWilco2014/04/06 02:48 PM
                          New article: AMD's Jaguar MicroarchitectureTREZA2014/04/06 03:47 PM
                            New article: AMD's Jaguar MicroarchitectureMichael S2014/04/07 02:34 AM
                              New article: AMD's Jaguar MicroarchitectureWilco2014/04/07 03:27 AM
                                New article: AMD's Jaguar MicroarchitectureMichael S2014/04/07 05:39 AM
                                  New article: AMD's Jaguar MicroarchitectureUnmaskedUnderflow2014/04/07 12:26 PM
                                    New article: AMD's Jaguar MicroarchitectureMichael S2014/04/07 01:42 PM
                                    New article: AMD's Jaguar MicroarchitectureWilco2014/04/07 01:50 PM
                                      New article: AMD's Jaguar MicroarchitectureUnmaskedUnderflow2014/04/07 02:11 PM
                                        New article: AMD's Jaguar MicroarchitectureWilco2014/04/07 05:44 PM
                                      New article: AMD's Jaguar MicroarchitectureTREZA2014/04/07 03:38 PM
              denormal on IvyB and HaswellMichael S2014/04/05 10:45 AM
                Forum searchiz2014/04/05 12:54 PM
                denormal on IvyB and HaswellLinus Torvalds2014/04/06 09:55 AM
                  denormal on IvyB and HaswellMichael S2014/04/17 06:43 PM
            New article: AMD's Jaguar Microarchitecturedmcq2014/04/05 06:52 AM
            New article: AMD's Jaguar MicroarchitectureMaynard Handley2014/04/05 10:38 AM
              New article: AMD's Jaguar MicroarchitectureMichael S2014/04/05 10:59 AM
                New article: AMD's Jaguar MicroarchitectureBrett2014/04/05 12:12 PM
                  New article: AMD's Jaguar MicroarchitectureEduardoS2014/04/05 12:29 PM
                    New article: AMD's Jaguar MicroarchitectureBrett2014/04/05 01:00 PM
                      New article: AMD's Jaguar MicroarchitectureMichael S2014/04/06 02:18 AM
                        New article: AMD's Jaguar MicroarchitectureBrett2014/04/06 10:08 AM
                          New article: AMD's Jaguar MicroarchitectureBrett2014/04/06 10:11 AM
                New article: AMD's Jaguar MicroarchitectureMaynard Handley2014/04/05 06:01 PM
                  New article: AMD's Jaguar MicroarchitectureMichael S2014/04/06 01:50 AM
                    New article: AMD's Jaguar MicroarchitectureMaynard Handley2014/04/06 03:52 PM
                      New article: AMD's Jaguar MicroarchitectureMichael S2014/04/07 02:20 AM
                        New article: AMD's Jaguar MicroarchitectureMaynard Handley2014/04/07 10:38 AM
                          New article: AMD's Jaguar MicroarchitectureWilco2014/04/07 10:47 AM
                            New article: AMD's Jaguar MicroarchitectureMaynard Handley2014/04/07 02:52 PM
                              New article: AMD's Jaguar MicroarchitectureWilco2014/04/07 04:01 PM
                                New article: AMD's Jaguar MicroarchitectureSeni2014/04/08 02:03 PM
                                  New article: AMD's Jaguar MicroarchitectureWilco2014/04/08 02:56 PM
                                    New article: AMD's Jaguar MicroarchitectureMichael S2014/04/08 04:05 PM
                                      New article: AMD's Jaguar MicroarchitectureMaynard Handley2014/04/08 06:55 PM
                                        New article: AMD's Jaguar MicroarchitectureMichael S2014/04/09 01:12 AM
                  New article: AMD's Jaguar MicroarchitectureWilco2014/04/06 04:51 AM
  New article: AMD's Jaguar MicroarchitectureWaltC2014/04/02 01:52 PM
    New article: AMD's Jaguar MicroarchitectureLinus Torvalds2014/04/02 02:25 PM
      New article: AMD's Jaguar Microarchitectureitsmydamnation2014/04/03 12:19 AM
      New article: AMD's Jaguar MicroarchitectureLinus Torvalds2014/04/09 01:44 PM
        New article: AMD's Jaguar MicroarchitectureDavid Kanter2014/04/10 11:24 PM
          New article: AMD's Jaguar Microarchitecturenone2014/04/11 01:49 AM
          New article: AMD's Jaguar MicroarchitectureLinus Torvalds2014/04/11 09:14 AM
    New article: AMD's Jaguar MicroarchitectureRyan Dean2014/04/03 01:04 AM
  New article: AMD's Jaguar MicroarchitecturePaul A. Clayton2014/04/02 05:02 PM
  New article: AMD's Jaguar MicroarchitectureRicky Chan2014/04/03 07:50 AM
    New article: AMD's Jaguar Microarchitecturesomeone2014/04/04 07:18 AM
  New article: AMD's Jaguar Microarchitecturebakaneko2014/04/09 03:08 PM
    New article: AMD's Jaguar MicroarchitectureTREZA2014/04/09 05:34 PM
  Jaguar's detailsHugo Décharnes2014/06/07 04:08 AM
Reply to this Topic
Name:
Email:
Topic:
Body: No Text
How do you spell green?