High res SKL-SP die shot

By: Brett (ggtgp.delete@this.yahoo.com), May 22, 2020 12:41 am
Room: Moderated Discussions
Travis Downs (travis.downs.delete@this.gmail.com) on May 21, 2020 9:28 pm wrote:
> Labeled chip by Chester (see parent):
> some labels on SKX
> This post solely to get rid of the unlabled image first.
> Chester, I can't read all the stuff you wrote in the front-end, do you have a higher res version?

The part you labeled AVX-512 I would call the larger file count added with AVX-512.

I would tag the whole left column as the high half of AVX-512, or AVX-256.

The right column has a 16 bit chunk in the middle that is separate, like high bits of a 80 bit float in a 128 bit wide register. A visible artifact of power gating and access of 64, 80, and 128 bit parts on a use need detected basis.

The part you labeled FPU Regs I would call a heavily ported cache of a two level register system?
The much larger full file would not need anywhere near as many ports saving power, with a highly ported cache in front.

Is the vector register file so big and slow that a two level system makes sense for performance or power use reasons?
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TopicPosted ByDate
High res SKL-SP die shotTravis Downs2020/04/27 04:19 PM
  High res SKL-SP die shotanonymou52020/04/27 11:15 PM
    Huh?Huh2020/05/22 10:12 PM
      Huh?Freedy2020/05/24 07:43 AM
        Huh?anonymou52020/05/24 12:40 PM
  High res SKL-SP die shotChester2020/05/01 05:13 PM
    High res SKL-SP die shotanon person2020/05/01 10:44 PM
    High res SKL-SP die shotanon2020/05/02 09:11 AM
      High res SKL-SP die shotanonymou52020/05/02 03:17 PM
        High res SKL-SP die shotwumpus2020/05/03 06:53 AM
    High res SKL-SP die shotTravis Downs2020/05/21 08:28 PM
      High res SKL-SP die shotBrett2020/05/22 12:41 AM
        High res SKL-SP die shotChester2020/05/22 12:25 PM
          High res SKL-SP die shotBrett2020/05/22 01:34 PM
      High res SKL-SP die shotnone2020/05/22 02:39 AM
        High res SKL-SP die shotDoug S2020/05/22 10:09 AM
          High res SKL-SP die shotChester2020/05/22 12:06 PM
          High res SKL-SP die shotnone2020/05/23 02:15 PM
            High res SKL-SP die shotDavid Kanter2020/05/23 07:57 PM
      High res SKL-SP die shotChester2020/05/22 12:01 PM
  High res SKL-SP die shotTravis Downs2020/05/03 12:01 PM
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