Expiry of x86-64 patents

By: Jukka Larja (roskakori2006.delete@this.gmail.com), November 1, 2020 7:01 am
Room: Moderated Discussions
Foo_ (foo.delete@this.nomail.com) on November 1, 2020 3:48 am wrote:
> Jukka Larja (roskakori2006.delete@this.gmail.com) on October 31, 2020 8:23 pm wrote:
> > me (me.delete@this.me.com) on October 31, 2020 3:01 pm wrote:
> > > > Anyway, the fact that even AVX (non-2) on many CPUs offers twice the bandwidth, yet gathers no interest
> > > > from game developers, just points more directly that SIMD extensions aren't interesting in the field.
> > > >
> > > > -JLarja
> > >
> > > Presumably Jaguar's lack of real performance benefit of using AVX has a lot to do with that.
> >
> > Well, it surely has something to do with it, but not a lot. Otherwise there would be more use of SSE, right?
>
> What are your sources concerning use (or non-use) of SIMD ISA extensions?

Unreal Engine source code mostly. I think there was some news about Unity getting some SIMD love, but that just highlights that until recently, it didn't do much with it.

I also don't have any anecdotes about meaningful use of SIMD after PS3 and Xbox 360. Basically since then GPUs have done the same thing better.

From point of view of someone who doesn't do much SIMD nor GPU code it makes sense. There are plenty of GPU programmers in game industry, but not really anyone who's main job would be to write code for CPU SIMD. If doing something on GPU is about as good as doing it with CPU SIMD, it will practically always get done on GPU, because that's what we know how to do.

-JLarja
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TopicPosted ByDate
Expiry of x86-64 patentsBeastian2019/04/19 09:05 AM
  Expiry of x86-64 patentsGian-Carlo Pascutto2019/04/19 09:46 AM
    Expiry of x86-64 patentsBeastian2019/04/19 10:06 AM
    Expiry of x86-64 patentsJukka Larja2019/04/19 10:44 AM
      Expiry of x86-64 patentsGian-Carlo Pascutto2019/04/19 11:12 AM
        Expiry of x86-64 patentsJukka Larja2019/04/19 12:41 PM
          Expiry of x86-64 patentsRobert Williams2019/04/19 01:18 PM
          Expiry of x86-64 patentsGian-Carlo Pascutto2019/04/19 02:35 PM
          Expiry of x86-64 patentsIntelUser20002020/10/30 02:17 AM
            Expiry of x86-64 patentsJukka Larja2020/10/30 07:49 AM
              Expiry of x86-64 patentsme2020/10/30 09:47 AM
                Expiry of x86-64 patentsJukka Larja2020/10/30 09:52 AM
                  Expiry of x86-64 patentsMark Roulo2020/10/30 10:21 AM
                    Expiry of x86-64 patentsJukka Larja2020/10/30 11:29 AM
                      Expiry of x86-64 patentsMark Roulo2020/10/30 11:42 AM
                        Expiry of x86-64 patentsJukka Larja2020/10/30 09:04 PM
                          SIMD syntaxhobold2020/10/31 06:54 AM
                            SIMD syntaxJukka Larja2020/10/31 09:14 AM
                              SIMD syntaxhobold2020/11/01 08:22 AM
                                SIMD syntaxJukka Larja2020/11/01 11:11 AM
                                  SIMD syntaxhobold2020/11/02 05:33 AM
                          Expiry of x86-64 patentsme2020/10/31 03:01 PM
                            Expiry of x86-64 patentsJukka Larja2020/10/31 09:23 PM
                              Expiry of x86-64 patentsFoo_2020/11/01 04:48 AM
                                Expiry of x86-64 patentsJukka Larja2020/11/01 07:01 AM
                      Expiry of x86-64 patentsAdrian2020/10/30 12:02 PM
                        Expiry of x86-64 patentsBigos2020/10/30 01:20 PM
      Expiry of x86-64 patentsGeoff Langdale2019/04/19 02:52 PM
        Expiry of x86-64 patentsJukka Larja2019/04/19 09:38 PM
      Expiry of x86-64 patentsYuhong Bao2019/04/20 02:35 PM
  Expiry of x86-64 patentsDoug S2019/04/19 10:40 AM
    Expiry of x86-64 patentsBeastian2019/04/19 11:10 AM
      Expiry of x86-64 patentsRobert Williams2019/04/20 08:15 AM
        Expiry of x86-64 patentsRobert Williams2020/10/28 06:42 AM
  Expiry of x86-64 patentsanyone2019/04/20 07:11 AM
    Expiry of x86-64 patentsGroo2019/04/20 07:29 AM
      Expiry of x86-64 patentswumpus2019/04/20 08:32 AM
      Expiry of x86-64 patentsblaine2020/10/30 12:03 PM
        Expiry of x86-64 patentsDavid Kanter2020/10/30 08:59 PM
  Intel vs AMD patentsYuhong Bao2019/04/20 02:32 PM
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  Expiry of x86-64 patentsTravis Downs2019/04/20 07:24 PM
    Expiry of x86-64 patentsnone2019/04/21 07:36 AM
      Expiry of x86-64 patentssomebody2019/11/27 10:44 AM
      Expiry of x86-64 patentsAnon32019/11/27 05:16 PM
        Expiry of x86-64 patentsTravis Downs2019/11/27 06:17 PM
      Expiry of x86-64 patentsMontaray Jack2019/11/28 12:03 AM
        Expiry of x86-64 patentsnone2019/11/28 01:57 AM
          Expiry of x86-64 patentsdmcq2019/11/28 11:20 AM
            Expiry of x86-64 patentsMontaray Jack2019/11/29 05:00 AM
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