Intel AVX-512 dev box

By: Mr. Camel (rohit.santhanam.delete@this.live.com), September 11, 2019 3:30 pm
Room: Moderated Discussions
Mr. Camel (rohit.santhanam.delete@this.live.com) on September 11, 2019 3:14 pm wrote:
> Mr. Camel (rohit.santhanam.delete@this.live.com) on August 13, 2019 12:30 pm wrote:
> > For software developers who are writing code to leverage new x64 instructions sets such as AVX512,
> > does anyone know if Intel can load development boxes with hardware support for the aforementioned
> > instruction sets to these developers to help them performance test their code?
> >
> > You obviously cannot performance test your code in a software emulator.
> >
> > I searched the Intel website and found no useful information on this.
> >
>
> I just bought the Dell laptop because I needed a physical
> machine to test the AVX512 workloads that I created.
>
> For those who care, the performance uplift over AVX2 was largely in line with expectations - 2-2.5X faster.
>
> The 2.5X uplift was due to fact that I leveraged some of the 8 opmask registers
> to reduce the number of necessary AVX512 instructions in the loop.
>
> There is one peculiar thing about this laptop that I hope someone could help me understand.
>
> When you setup (or modify) a Windows 10 power plan, you are presented
> with a list of parameters to tweak in the advanced settings dialog.
>
> In this laptop, many of these options are missing:
>
> USB settings
> Intel graphics settings
> PCI express
> Processor power management
> Multimedia settings
>
> Perhaps I missed a few.
>
> Why is that?
>
> Also, when I tried to enable Ultimate Performance mode, it failed (it worked on my Kaby
> Lake Windows 10 laptop at work - that laptop has the missing options listed above).
>
> I obviously want to maximize the performance of this laptop since I am doing
> performance testing but it feels like I am missing something that is preventing
> me from extracting the maximum possible performance from the hardware.
>
>

The Kaby Lake laptop from work has a max frequency of 4.0 GHz. The Ice Lake Dell laptop has a max frequency of 3.9 GHz.

So, in the Google octane 2 web benchmark, the Ice Lake system should destroy the Kaby Lake one....except that it doesn't.

The Kaby Lake system slightly beats it.

How is that possible?

Could it be that the Ice Lake system cannot maintain the max turbo boost frequency for a long period of time?
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TopicPosted ByDate
Intel AVX-512 dev boxMr. Camel2019/08/13 12:30 PM
  Intel AVX-512 dev boxMr. Camel2019/08/13 12:31 PM
    Intel AVX-512 dev boxbob cloud2019/08/13 01:10 PM
      Intel AVX-512 dev boxMr. Camel2019/08/13 05:01 PM
        Intel AVX-512 dev boxAdrian2019/08/13 08:57 PM
          Intel AVX-512 dev boxTravis Downs2019/08/13 09:34 PM
            Intel AVX-512 dev boxAdrian2019/08/13 09:47 PM
              Intel AVX-512 dev boxAdrian2019/08/13 10:27 PM
              Intel AVX-512 dev boxanonymous22019/08/14 02:53 PM
          Intel AVX-512 dev boxMichael S2019/08/14 12:42 AM
            Intel AVX-512 dev boxAdrian2019/08/14 01:04 AM
              Intel AVX-512 dev boxMichael S2019/08/14 01:50 AM
              Intel AVX-512 dev boxGeoff Langdale2019/08/14 06:02 PM
            Intel AVX-512 dev boxbob cloud2019/08/14 08:01 AM
    Intel AVX-512 dev boxJukka Larja2019/08/14 08:01 AM
  Intel AVX-512 dev boxEric Bron2019/08/13 10:47 PM
    Intel AVX-512 dev boxMr. Camel2019/08/14 04:18 AM
  Beware of chip-to-chip differences ...Mark Roulo2019/08/14 07:44 AM
  Intel AVX-512 dev boxMr. Camel2019/09/11 03:14 PM
    Intel AVX-512 dev boxMr. Camel2019/09/11 03:30 PM
      Intel AVX-512 dev boxme2019/09/11 05:58 PM
        Intel AVX-512 dev boxMr. Camel2019/09/11 06:03 PM
          Intel AVX-512 dev boxNathan2019/09/11 06:18 PM
            Intel AVX-512 dev boxGoose2019/09/11 09:08 PM
              Intel AVX-512 dev boxGoose2019/09/11 09:09 PM
          Intel AVX-512 dev boxAdrian2019/09/11 10:50 PM
    Intel AVX-512 dev boxsomeone2019/09/12 01:42 AM
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