ARM announces Ares

By: Linus Torvalds (torvalds.delete@this.linux-foundation.org), February 20, 2019 10:36 am
Room: Moderated Discussions
nobody in particular (nobody.delete@this.nowhe.re) on February 20, 2019 7:35 am wrote:
> Write-up at Anandtech
>
> The stated SPECint numbers are superb. I'm looking forward
> to spec2017, but this is a very, very promising start.

We'll see if it actually delivers, but ARM is certainly looking a whole lot better than it used to.

They've been nicely strengthening their memory model, to the point that these days it's actually one of the better ones. They even seem to have decided that I$ coherency matters. Good for them. Doing cache coherency in software is crazy, and people who think it's a good idea don't understand the complexities of reality. Maybe some day it will even become architectural.

And I have to say, I like the direction ARM is going with vector math a lot more than the AVX512 that Intel is pushing. I don't know how well it works in practice, but the whole "let's try to do something that works for different vector lengths" is laudable. I'm quite tired of the model where Intel introduces yet another incompatible model every few years.

I still will hold judgement until we actually see widely available hardware that people actually can use for development and deployment. I've just seen too many promises and "released" hardware that never went anywhere and nobody really had reasonably available.

In particular, I do wish they didn't push the "hyperscale" design so much. Maybe they got the scaling working, but honestly, I doubt it. It just takes time and effort and learning. Don't try to jump to 64-128 core targets until you've had a few years of just plain getting something like a "simple" 8-core one right. Which they haven't actually demonstrated, so far.

But hey, maybe they'll surprise me.

Linus
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TopicPosted ByDate
ARM announces Aresnobody in particular2019/02/20 08:35 AM
  ARM announces AresAdrian2019/02/20 08:39 AM
    ARM announces Aresdmcq2019/02/20 10:03 AM
      ARM announces AresMichael S2019/02/20 10:41 AM
        ARM announces Aresdmcq2019/02/20 12:49 PM
          ARM announces AresMichael S2019/02/20 01:21 PM
            ARM announces Aresdmcq2019/02/20 02:01 PM
              ARM announces AresWilco2019/02/20 02:31 PM
                ARM announces Aresdmcq2019/02/20 03:16 PM
                  ARM announces AresWilco2019/02/20 03:49 PM
                    ARM announces Aresdmcq2019/02/20 04:09 PM
                      ARM announces AresWilco2019/02/20 04:45 PM
                        ARM announces Aresnobody in particular2019/02/20 04:55 PM
                          ARM announces AresDan Fay2019/02/20 05:44 PM
                            ARM announces AresWilco2019/02/20 07:06 PM
                              ARM announces AresDan Fay2019/02/21 08:27 AM
                        ARM announces Aresdmcq2019/02/20 05:49 PM
                          ARM announces AresWilco2019/02/20 06:40 PM
                            ARM announces AresCharles2019/02/21 02:16 AM
                              ARM announces AresMichael S2019/02/21 02:26 AM
                        ARM announces Aresanon2019/02/20 08:55 PM
                          ARM announces AresJS2019/02/21 12:59 AM
                            *has not hasn't (NT)JS2019/02/21 01:01 AM
                            ARM announces AresSalvatore De Dominicis2019/02/21 07:05 AM
                        Definitions of RISCBrendan2019/02/21 10:07 AM
                          Definitions of RISCMichael S2019/02/21 10:16 AM
                          PDP-8 Not Usually Considered RISCMark Roulo2019/02/21 02:10 PM
                            PDP-8 Not Usually Considered RISCrwessel2019/02/21 07:13 PM
                          Definitions of RISCAdrian2019/02/21 02:42 PM
                            Definitions of RISC (nod to John Mashey and comp.arch)wumpus2019/02/21 06:29 PM
                              Definitions of RISC (nod to John Mashey and comp.arch)none2019/02/22 12:32 AM
                                Definitions of RISC (nod to John Mashey and comp.arch)Michael S2019/02/22 04:28 AM
                                  Definitions of RISC (nod to John Mashey and comp.arch)none2019/02/22 08:01 AM
  ARM announces Areslockederboss2019/02/20 09:56 AM
    stability? (NT)anonymous22019/02/20 10:01 AM
    ARM announces Aresdmcq2019/02/20 10:05 AM
    ARM announces AresGroo2019/02/20 10:11 AM
    ARM announces AresAndrei Frumusanu2019/02/20 11:49 AM
  ARM announces AresLinus Torvalds2019/02/20 10:36 AM
    ARM announces AresMichael S2019/02/20 10:54 AM
    ARM announces AresGeoff Langdale2019/02/20 03:07 PM
      ARM announces Aresdmcq2019/02/20 03:32 PM
      ARM announces Aresnone2019/02/21 12:03 AM
        That last line should have been removed :-) (NT)none2019/02/21 12:04 AM
        ARM announces AresMichael S2019/02/21 01:47 AM
          ARM announces Aresnone2019/02/21 03:59 AM
            ARM announces AresMichael S2019/02/21 04:45 AM
            ARM announces Aresdmcq2019/02/21 05:18 AM
              ARM announces AresSimon Farnsworth2019/02/22 09:43 AM
    ARM announces Aresanon2019/02/20 09:27 PM
      ARM announces AresMichael S2019/02/21 01:53 AM
        ARM announces AresLinus Torvalds2019/02/21 09:03 AM
          ARM announces AresMichael S2019/02/21 09:35 AM
            ARM announces AresMichael S2019/02/21 09:51 AM
            ARM announces AresFoo_2019/02/21 02:40 PM
            ARM announces Aresaaron spink2019/02/21 03:56 PM
            ARM announces AresLinus Torvalds2019/02/21 04:27 PM
              ARM announces AresStoffels2019/02/22 12:21 AM
                ARM announces AresMichael S2019/02/22 04:15 AM
                  ARM announces AresSimon Farnsworth2019/02/22 09:41 AM
                    ARM announces Aresnone2019/02/22 10:30 AM
                    In other words: nobody will ever get fired for choosing x86 (NT)Gabriele Svelto2019/02/24 01:32 PM
                      In other words: nobody will ever get fired for choosing x86Simon Farnsworth2019/02/25 04:53 AM
              ARM announces AresFoo_2019/02/22 02:52 AM
              ARM announces AresGabriele Svelto2019/02/24 01:31 PM
                ARM announces AresMaynard Handley2019/02/25 03:57 AM
                  ARM announces AresGabriele Svelto2019/02/25 04:21 AM
                    ARM announces AresMichael S2019/02/25 04:58 AM
                      ARM announces Aresnobody in particular2019/02/25 05:21 AM
                        ARM announces AresAdrian2019/02/26 08:02 AM
                    ARM announces AresMaynard Handley2019/02/26 12:32 AM
                      ARM announces AresGabriele Svelto2019/02/26 12:14 PM
                      ARM announces AresDavid Hess2019/03/19 05:34 PM
                    ARM announces Aresnone2019/02/26 01:34 AM
                      ARM announces AresGabriele Svelto2019/02/26 12:16 PM
                        ARM announces Aresnone2019/02/27 12:19 AM
              ARM announces Aresend of an era2019/02/24 03:18 PM
                Word salad bot strikes again (NT)nanon2019/02/25 12:26 AM
                ARM announces Areshobel2019/02/25 02:10 AM
                  ARM announces AresMichael S2019/02/25 02:52 AM
                    ARM announces Areshobel2019/02/25 10:48 AM
                      ARM announces AresAndrew Clough2019/02/25 02:07 PM
                      ARM announces AresMaynard Handley2019/02/26 12:38 AM
                    ARM announces AresJohn Yates2019/02/26 03:43 PM
              ARM announces AresHoward Chu2019/02/27 06:55 AM
              ARM announces AresDavid Hess2019/03/19 05:22 PM
            ARM announces AresDavid Hess2019/03/19 04:54 PM
              ARMY announces Aresdmcq2019/03/20 03:12 AM
                ARMY announces AresDavid Hess2019/03/20 05:47 AM
                  ARMY announces Aresdmcq2019/03/20 06:05 AM
          ARM announces AresGroo2019/02/21 10:23 AM
            ARM announces AresMichael S2019/02/21 10:29 AM
              ARM announces AresDavid Hess2019/03/19 05:44 PM
            ARM announces Aresjuanrga2019/02/21 11:52 AM
            ARM announces Aresanon2019/02/21 08:19 PM
              ARM announces Areshobel2019/02/22 03:40 AM
          software ecosystemsRichardC2019/02/21 04:31 PM
            software ecosystemsFoo_2019/02/22 03:15 AM
          ARM announces Aresdmcq2019/02/21 05:31 PM
            + on hyperscalingdmcq2019/02/22 08:23 AM
              + on hyperscalingMaynard Handley2019/02/22 08:38 AM
                + on hyperscalingjuanrga2019/02/22 11:57 AM
            + on hyperscalingdmcq2019/02/22 08:23 AM
              sorry duplicatedmcq2019/02/22 08:26 AM
          ARM announces Aresanon2019/02/21 08:34 PM
            ARM announces AresBrett2019/02/21 10:20 PM
          ARM announces AresA. Wilcox2019/02/22 03:52 PM
  ARM announces AresDoug S2019/02/20 03:30 PM
    ARM announces Aresdmcq2019/02/20 04:14 PM
      ARM announces AresDoug S2019/02/21 08:40 AM
        ARM announces Aresaaron spink2019/02/21 04:05 PM
        ARM announces AresMaynard Handley2019/02/22 08:48 AM
  ARM announces Aresjuanrga2019/02/21 02:28 AM
    ARM announces AresMichael S2019/02/21 03:25 AM
      ARM announces Aresjuanrga2019/02/22 04:09 AM
      ARM announces AresMaynard Handley2019/02/22 08:51 AM
        ARM announces AresDavid Soul2019/02/22 11:47 AM
          ARM announces Aresjuanrga2019/02/22 12:23 PM
            Chicken or egg, both.Brett2019/02/22 02:21 PM
              Chicken or egg, both.David Soul2019/02/22 06:05 PM
                Chicken or egg, both.Brett2019/02/22 09:55 PM
                  ARM salesjuanrga2019/02/23 03:55 AM
                    ARM salesaaron spink2019/02/23 08:47 AM
                Chicken or egg, both.Ronald Maas2019/02/23 06:33 PM
                  Chicken or egg, both.Magagop2019/02/24 11:18 PM
                    why not? (NT)Michael S2019/02/25 02:03 AM
                      why not?Not the parent2019/02/25 10:36 AM
                        why not?Michael S2019/02/25 10:43 AM
                          why not?dmcq2019/02/25 11:35 AM
                            why not?Michael S2019/02/25 12:03 PM
                              why not?dmcq2019/02/25 12:29 PM
                              why not?Not the parent2019/02/26 10:08 AM
                                why not?Doug S2019/02/26 12:05 PM
                                  why not?Not the parent2019/02/27 04:51 AM
                                    why not?Doug S2019/02/27 12:15 PM
                                      why not?Not the parent2019/02/28 01:43 AM
                                why not?anon2019/02/26 11:22 PM
                                  why not?Not the parent2019/02/27 04:59 AM
                                    why not?anon2019/02/27 06:42 AM
                                      why not?Magagop2019/02/27 03:31 PM
                                        why not?anon2019/02/27 05:02 PM
                                          why not?dmcq2019/02/27 05:25 PM
                                            why not?anon2019/02/27 05:56 PM
                                              why not?dmcq2019/02/27 06:19 PM
                                                why not?anon2019/02/27 06:46 PM
                                                  why not?Wilco2019/02/28 05:49 AM
                                                    why not?Jukka Larja2019/02/28 07:02 AM
                                                      why not?Michael S2019/02/28 08:32 AM
                                                      why not?Wilco2019/02/28 09:40 AM
                                                      why not?Doug S2019/02/28 10:13 AM
                                                        why not?Foo_2019/03/01 07:35 AM
                                                          why not?Doug S2019/03/01 11:05 AM
                                                            why not?anon2019/03/01 02:32 PM
                                                              why not?dmcq2019/03/01 03:13 PM
                                                                why not?anon2019/03/01 04:13 PM
                                                                  why not?dmcq2019/03/02 03:56 AM
                                                                    why not?anon2019/03/02 10:09 AM
                                                                      why not?dmcq2019/03/02 10:41 AM
                                                                        why not?anon2019/03/02 12:19 PM
                                                                          why not?dmcq2019/03/03 03:48 AM
                                                                      why not?Doug S2019/03/02 04:53 PM
                                                                        why not?Michael S2019/03/02 05:06 PM
                                                                          why not?Doug S2019/03/03 12:54 AM
                                                                            why not?Michael S2019/03/03 02:58 AM
                                                                              why not?anon2019/03/03 05:35 AM
                                                                                why not?dmcq2019/03/03 06:33 AM
                                                                                  I considired dry humor a Brittish specialty. It seems, I was wrong about it. (NT)Michael S2019/03/03 06:39 AM
                                                                                  why not?anon2019/03/03 10:13 AM
                                                                                    why not?Michael S2019/03/03 12:41 PM
                                                                                      why not?dmcq2019/03/03 01:21 PM
                                                                                        why not?anon2019/03/03 04:15 PM
                                                    why not?anon2019/02/28 08:38 PM
                                              why not?Not the parent2019/02/28 01:48 AM
                                                strawman (NT)anon2019/02/28 08:31 PM
                            why not?Michael S2019/02/27 03:53 AM
                              why not?Not the parent2019/02/27 05:26 AM
                                why not?Michael S2019/02/27 05:42 AM
                              why not?dmcq2019/02/27 05:49 AM
                                why not?Michael S2019/02/27 06:21 AM
                                  why not?dmcq2019/02/27 07:15 AM
                                Selling at multiple layersPaul A. Clayton2019/02/27 11:25 AM
                                  Selling at multiple layersDoug S2019/02/27 12:45 PM
                                    Selling at multiple layersPaul A. Clayton2019/02/27 02:32 PM
                                      Selling at multiple layersDoug S2019/02/27 04:04 PM
                                        Paul A. Clayton2019/02/27 07:06 PM
                                          Arm reference board?Simon Farnsworth2019/02/28 12:34 PM
                                why not?Doug S2019/02/27 12:46 PM
                      why not? (NT)la mama de murgay2019/02/25 10:22 PM
                    Chicken or egg, both.Ronald Maas2019/02/25 01:23 PM
            ARM announces AresGabriele Svelto2019/02/24 03:07 PM
              ARM announces Aresjuanrga2019/03/02 05:40 AM
                ARM announces AresGabriele Svelto2019/03/02 08:08 AM
                  ARM announces Aresdmcq2019/03/02 10:10 AM
          ARM announces Areshobel2019/02/22 04:33 PM
            ARM announces AresDavid Soul2019/02/22 06:20 PM
              TrollDoug S2019/02/23 01:37 AM
                TrollDavid Soul2019/02/23 08:59 AM
              ARM announces AresEnnis2019/02/23 02:18 AM
                ARM announces AresFoo_2019/02/23 02:38 AM
                  ARM announces Aresanon2019/02/23 03:46 AM
                ARM announces Aresdmcq2019/02/23 05:41 AM
  ARM announces Aresnobody in particular2019/02/26 03:58 AM
    expensiveanonymous22019/02/27 12:46 AM
    ARM announces AresHoward Chu2019/02/27 07:19 AM
      ARM announces AresHoward Chu2019/02/27 07:21 AM
        ARM announces Aresdmcq2019/02/27 07:57 AM
        ARM announces AresJukka Larja2019/02/27 08:11 AM
          ARM announces AresMichael S2019/02/27 08:16 AM
            ARM announces AresDoug S2019/02/27 12:49 PM
              ARM announces AresMichael S2019/02/27 01:43 PM
                ARM announces AresDoug S2019/02/27 04:06 PM
                  ARM announces AresGian-Carlo Pascutto2019/02/28 05:00 AM
                ARM announces AresGian-Carlo Pascutto2019/02/28 05:02 AM
                  ARM announces AresMichael S2019/03/01 03:47 AM
                    death by a thousand cutsMichael S2019/03/01 07:27 AM
                      death by a thousand cutsFoo_2019/03/01 07:37 AM
                        death by a thousand cutsdmcq2019/03/01 12:10 PM
              ARM announces AresJukka Larja2019/02/28 06:31 AM
                ARM announces AresHoward Chu2019/02/28 09:17 AM
                  ARM announces AresGabriele Svelto2019/02/28 03:02 PM
                    ARM announces Aresaaron spink2019/03/01 01:19 AM
                ARM announces AresAndrew Clough2019/02/28 11:32 AM
                  ARM announces AresAndrew Clough2019/02/28 11:33 AM
                  ARM announces AresFoo_2019/03/01 01:55 AM
                  ARM announces AresJukka Larja2019/03/01 05:40 AM
          ARM announces AresHoward Chu2019/02/27 08:45 AM
            ARM announces Aresdmcq2019/02/27 09:17 AM
              ARM announces Aresdmcq2019/02/27 09:21 AM
                ARM announces AresHoward Chu2019/02/27 04:03 PM
            ARM announces AresJukka Larja2019/02/28 06:03 AM
      ARM announces Aresnone2019/02/27 11:49 PM
        ARM announces AresHoward Chu2019/02/28 04:26 AM
          ARM announces AresPeter E. Fry2019/02/28 07:31 PM
            ARM announces AresAdrian2019/02/28 10:09 PM
            ARM announces AresGabriele Svelto2019/03/02 12:56 AM
              ARM announces AresHoward Chu2019/03/02 10:05 AM
                ARM announces AresGabriele Svelto2019/03/02 02:31 PM
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