By: Foo_ (foo.delete@this.nomail.com), February 23, 2019 2:38 am
Room: Moderated Discussions
Ennis (quinn_noel.delete@this.yahoo.com.au) on February 23, 2019 1:18 am wrote:
> The mighty Intel juggernaut has run aground after 30 years of dominance, and people whose whole career has been
> spent in that environment have failed to notice the change because they are submerged in the detail. Spectre
> is not just an inconvenience that can be patched. It brings in the end of speculative processing, for good.
> Fortunately RISC marched on quietly on the margins so there is a working alternative.
Because ARM CPU performance magically doesn't rely on speculative processing?
In case you're lazy, here's a hint straight from the article: "Arm here also employs some of the biggest branch target and direction prediction buffers that are publicly known in the industry"... Those branch prediction buffers wouldn't be very useful if they weren't used to speculate taken / not taken branches, and their respective targets.
And guess what: "Spectre is a vulnerability that affects modern microprocessors that perform branch prediction" (from Wikipedia).
> The mighty Intel juggernaut has run aground after 30 years of dominance, and people whose whole career has been
> spent in that environment have failed to notice the change because they are submerged in the detail. Spectre
> is not just an inconvenience that can be patched. It brings in the end of speculative processing, for good.
> Fortunately RISC marched on quietly on the margins so there is a working alternative.
Because ARM CPU performance magically doesn't rely on speculative processing?
In case you're lazy, here's a hint straight from the article: "Arm here also employs some of the biggest branch target and direction prediction buffers that are publicly known in the industry"... Those branch prediction buffers wouldn't be very useful if they weren't used to speculate taken / not taken branches, and their respective targets.
And guess what: "Spectre is a vulnerability that affects modern microprocessors that perform branch prediction" (from Wikipedia).
| Topic | Posted By | Date |
|---|---|---|
| ARM announces Ares | nobody in particular | 2019/02/20 08:35 AM |
| ARM announces Ares | Adrian | 2019/02/20 08:39 AM |
| ARM announces Ares | dmcq | 2019/02/20 10:03 AM |
| ARM announces Ares | Michael S | 2019/02/20 10:41 AM |
| ARM announces Ares | dmcq | 2019/02/20 12:49 PM |
| ARM announces Ares | Michael S | 2019/02/20 01:21 PM |
| ARM announces Ares | dmcq | 2019/02/20 02:01 PM |
| ARM announces Ares | Wilco | 2019/02/20 02:31 PM |
| ARM announces Ares | dmcq | 2019/02/20 03:16 PM |
| ARM announces Ares | Wilco | 2019/02/20 03:49 PM |
| ARM announces Ares | dmcq | 2019/02/20 04:09 PM |
| ARM announces Ares | Wilco | 2019/02/20 04:45 PM |
| ARM announces Ares | nobody in particular | 2019/02/20 04:55 PM |
| ARM announces Ares | Dan Fay | 2019/02/20 05:44 PM |
| ARM announces Ares | Wilco | 2019/02/20 07:06 PM |
| ARM announces Ares | Dan Fay | 2019/02/21 08:27 AM |
| ARM announces Ares | dmcq | 2019/02/20 05:49 PM |
| ARM announces Ares | Wilco | 2019/02/20 06:40 PM |
| ARM announces Ares | Charles | 2019/02/21 02:16 AM |
| ARM announces Ares | Michael S | 2019/02/21 02:26 AM |
| ARM announces Ares | anon | 2019/02/20 08:55 PM |
| ARM announces Ares | JS | 2019/02/21 12:59 AM |
| *has not hasn't (NT) | JS | 2019/02/21 01:01 AM |
| ARM announces Ares | Salvatore De Dominicis | 2019/02/21 07:05 AM |
| Definitions of RISC | Brendan | 2019/02/21 10:07 AM |
| Definitions of RISC | Michael S | 2019/02/21 10:16 AM |
| PDP-8 Not Usually Considered RISC | Mark Roulo | 2019/02/21 02:10 PM |
| PDP-8 Not Usually Considered RISC | rwessel | 2019/02/21 07:13 PM |
| Definitions of RISC | Adrian | 2019/02/21 02:42 PM |
| Definitions of RISC (nod to John Mashey and comp.arch) | wumpus | 2019/02/21 06:29 PM |
| Definitions of RISC (nod to John Mashey and comp.arch) | none | 2019/02/22 12:32 AM |
| Definitions of RISC (nod to John Mashey and comp.arch) | Michael S | 2019/02/22 04:28 AM |
| Definitions of RISC (nod to John Mashey and comp.arch) | none | 2019/02/22 08:01 AM |
| ARM announces Ares | lockederboss | 2019/02/20 09:56 AM |
| stability? (NT) | anonymous2 | 2019/02/20 10:01 AM |
| ARM announces Ares | dmcq | 2019/02/20 10:05 AM |
| ARM announces Ares | Groo | 2019/02/20 10:11 AM |
| ARM announces Ares | Andrei Frumusanu | 2019/02/20 11:49 AM |
| ARM announces Ares | Linus Torvalds | 2019/02/20 10:36 AM |
| ARM announces Ares | Michael S | 2019/02/20 10:54 AM |
| ARM announces Ares | Geoff Langdale | 2019/02/20 03:07 PM |
| ARM announces Ares | dmcq | 2019/02/20 03:32 PM |
| ARM announces Ares | none | 2019/02/21 12:03 AM |
| That last line should have been removed :-) (NT) | none | 2019/02/21 12:04 AM |
| ARM announces Ares | Michael S | 2019/02/21 01:47 AM |
| ARM announces Ares | none | 2019/02/21 03:59 AM |
| ARM announces Ares | Michael S | 2019/02/21 04:45 AM |
| ARM announces Ares | dmcq | 2019/02/21 05:18 AM |
| ARM announces Ares | Simon Farnsworth | 2019/02/22 09:43 AM |
| ARM announces Ares | anon | 2019/02/20 09:27 PM |
| ARM announces Ares | Michael S | 2019/02/21 01:53 AM |
| ARM announces Ares | Linus Torvalds | 2019/02/21 09:03 AM |
| ARM announces Ares | Michael S | 2019/02/21 09:35 AM |
| ARM announces Ares | Michael S | 2019/02/21 09:51 AM |
| ARM announces Ares | Foo_ | 2019/02/21 02:40 PM |
| ARM announces Ares | aaron spink | 2019/02/21 03:56 PM |
| ARM announces Ares | Linus Torvalds | 2019/02/21 04:27 PM |
| ARM announces Ares | Stoffels | 2019/02/22 12:21 AM |
| ARM announces Ares | Michael S | 2019/02/22 04:15 AM |
| ARM announces Ares | Simon Farnsworth | 2019/02/22 09:41 AM |
| ARM announces Ares | none | 2019/02/22 10:30 AM |
| In other words: nobody will ever get fired for choosing x86 (NT) | Gabriele Svelto | 2019/02/24 01:32 PM |
| In other words: nobody will ever get fired for choosing x86 | Simon Farnsworth | 2019/02/25 04:53 AM |
| ARM announces Ares | Foo_ | 2019/02/22 02:52 AM |
| ARM announces Ares | Gabriele Svelto | 2019/02/24 01:31 PM |
| ARM announces Ares | Maynard Handley | 2019/02/25 03:57 AM |
| ARM announces Ares | Gabriele Svelto | 2019/02/25 04:21 AM |
| ARM announces Ares | Michael S | 2019/02/25 04:58 AM |
| ARM announces Ares | nobody in particular | 2019/02/25 05:21 AM |
| ARM announces Ares | Adrian | 2019/02/26 08:02 AM |
| ARM announces Ares | Maynard Handley | 2019/02/26 12:32 AM |
| ARM announces Ares | Gabriele Svelto | 2019/02/26 12:14 PM |
| ARM announces Ares | David Hess | 2019/03/19 05:34 PM |
| ARM announces Ares | none | 2019/02/26 01:34 AM |
| ARM announces Ares | Gabriele Svelto | 2019/02/26 12:16 PM |
| ARM announces Ares | none | 2019/02/27 12:19 AM |
| ARM announces Ares | end of an era | 2019/02/24 03:18 PM |
| Word salad bot strikes again (NT) | nanon | 2019/02/25 12:26 AM |
| ARM announces Ares | hobel | 2019/02/25 02:10 AM |
| ARM announces Ares | Michael S | 2019/02/25 02:52 AM |
| ARM announces Ares | hobel | 2019/02/25 10:48 AM |
| ARM announces Ares | Andrew Clough | 2019/02/25 02:07 PM |
| ARM announces Ares | Maynard Handley | 2019/02/26 12:38 AM |
| ARM announces Ares | John Yates | 2019/02/26 03:43 PM |
| ARM announces Ares | Howard Chu | 2019/02/27 06:55 AM |
| ARM announces Ares | David Hess | 2019/03/19 05:22 PM |
| ARM announces Ares | David Hess | 2019/03/19 04:54 PM |
| ARMY announces Ares | dmcq | 2019/03/20 03:12 AM |
| ARMY announces Ares | David Hess | 2019/03/20 05:47 AM |
| ARMY announces Ares | dmcq | 2019/03/20 06:05 AM |
| ARM announces Ares | Groo | 2019/02/21 10:23 AM |
| ARM announces Ares | Michael S | 2019/02/21 10:29 AM |
| ARM announces Ares | David Hess | 2019/03/19 05:44 PM |
| ARM announces Ares | juanrga | 2019/02/21 11:52 AM |
| ARM announces Ares | anon | 2019/02/21 08:19 PM |
| ARM announces Ares | hobel | 2019/02/22 03:40 AM |
| software ecosystems | RichardC | 2019/02/21 04:31 PM |
| software ecosystems | Foo_ | 2019/02/22 03:15 AM |
| ARM announces Ares | dmcq | 2019/02/21 05:31 PM |
| + on hyperscaling | dmcq | 2019/02/22 08:23 AM |
| + on hyperscaling | Maynard Handley | 2019/02/22 08:38 AM |
| + on hyperscaling | juanrga | 2019/02/22 11:57 AM |
| + on hyperscaling | dmcq | 2019/02/22 08:23 AM |
| sorry duplicate | dmcq | 2019/02/22 08:26 AM |
| ARM announces Ares | anon | 2019/02/21 08:34 PM |
| ARM announces Ares | Brett | 2019/02/21 10:20 PM |
| ARM announces Ares | A. Wilcox | 2019/02/22 03:52 PM |
| ARM announces Ares | Doug S | 2019/02/20 03:30 PM |
| ARM announces Ares | dmcq | 2019/02/20 04:14 PM |
| ARM announces Ares | Doug S | 2019/02/21 08:40 AM |
| ARM announces Ares | aaron spink | 2019/02/21 04:05 PM |
| ARM announces Ares | Maynard Handley | 2019/02/22 08:48 AM |
| ARM announces Ares | juanrga | 2019/02/21 02:28 AM |
| ARM announces Ares | Michael S | 2019/02/21 03:25 AM |
| ARM announces Ares | juanrga | 2019/02/22 04:09 AM |
| ARM announces Ares | Maynard Handley | 2019/02/22 08:51 AM |
| ARM announces Ares | David Soul | 2019/02/22 11:47 AM |
| ARM announces Ares | juanrga | 2019/02/22 12:23 PM |
| Chicken or egg, both. | Brett | 2019/02/22 02:21 PM |
| Chicken or egg, both. | David Soul | 2019/02/22 06:05 PM |
| Chicken or egg, both. | Brett | 2019/02/22 09:55 PM |
| ARM sales | juanrga | 2019/02/23 03:55 AM |
| ARM sales | aaron spink | 2019/02/23 08:47 AM |
| Chicken or egg, both. | Ronald Maas | 2019/02/23 06:33 PM |
| Chicken or egg, both. | Magagop | 2019/02/24 11:18 PM |
| why not? (NT) | Michael S | 2019/02/25 02:03 AM |
| why not? | Not the parent | 2019/02/25 10:36 AM |
| why not? | Michael S | 2019/02/25 10:43 AM |
| why not? | dmcq | 2019/02/25 11:35 AM |
| why not? | Michael S | 2019/02/25 12:03 PM |
| why not? | dmcq | 2019/02/25 12:29 PM |
| why not? | Not the parent | 2019/02/26 10:08 AM |
| why not? | Doug S | 2019/02/26 12:05 PM |
| why not? | Not the parent | 2019/02/27 04:51 AM |
| why not? | Doug S | 2019/02/27 12:15 PM |
| why not? | Not the parent | 2019/02/28 01:43 AM |
| why not? | anon | 2019/02/26 11:22 PM |
| why not? | Not the parent | 2019/02/27 04:59 AM |
| why not? | anon | 2019/02/27 06:42 AM |
| why not? | Magagop | 2019/02/27 03:31 PM |
| why not? | anon | 2019/02/27 05:02 PM |
| why not? | dmcq | 2019/02/27 05:25 PM |
| why not? | anon | 2019/02/27 05:56 PM |
| why not? | dmcq | 2019/02/27 06:19 PM |
| why not? | anon | 2019/02/27 06:46 PM |
| why not? | Wilco | 2019/02/28 05:49 AM |
| why not? | Jukka Larja | 2019/02/28 07:02 AM |
| why not? | Michael S | 2019/02/28 08:32 AM |
| why not? | Wilco | 2019/02/28 09:40 AM |
| why not? | Doug S | 2019/02/28 10:13 AM |
| why not? | Foo_ | 2019/03/01 07:35 AM |
| why not? | Doug S | 2019/03/01 11:05 AM |
| why not? | anon | 2019/03/01 02:32 PM |
| why not? | dmcq | 2019/03/01 03:13 PM |
| why not? | anon | 2019/03/01 04:13 PM |
| why not? | dmcq | 2019/03/02 03:56 AM |
| why not? | anon | 2019/03/02 10:09 AM |
| why not? | dmcq | 2019/03/02 10:41 AM |
| why not? | anon | 2019/03/02 12:19 PM |
| why not? | dmcq | 2019/03/03 03:48 AM |
| why not? | Doug S | 2019/03/02 04:53 PM |
| why not? | Michael S | 2019/03/02 05:06 PM |
| why not? | Doug S | 2019/03/03 12:54 AM |
| why not? | Michael S | 2019/03/03 02:58 AM |
| why not? | anon | 2019/03/03 05:35 AM |
| why not? | dmcq | 2019/03/03 06:33 AM |
| I considired dry humor a Brittish specialty. It seems, I was wrong about it. (NT) | Michael S | 2019/03/03 06:39 AM |
| why not? | anon | 2019/03/03 10:13 AM |
| why not? | Michael S | 2019/03/03 12:41 PM |
| why not? | dmcq | 2019/03/03 01:21 PM |
| why not? | anon | 2019/03/03 04:15 PM |
| why not? | anon | 2019/02/28 08:38 PM |
| why not? | Not the parent | 2019/02/28 01:48 AM |
| strawman (NT) | anon | 2019/02/28 08:31 PM |
| why not? | Michael S | 2019/02/27 03:53 AM |
| why not? | Not the parent | 2019/02/27 05:26 AM |
| why not? | Michael S | 2019/02/27 05:42 AM |
| why not? | dmcq | 2019/02/27 05:49 AM |
| why not? | Michael S | 2019/02/27 06:21 AM |
| why not? | dmcq | 2019/02/27 07:15 AM |
| Selling at multiple layers | Paul A. Clayton | 2019/02/27 11:25 AM |
| Selling at multiple layers | Doug S | 2019/02/27 12:45 PM |
| Selling at multiple layers | Paul A. Clayton | 2019/02/27 02:32 PM |
| Selling at multiple layers | Doug S | 2019/02/27 04:04 PM |
| Paul A. Clayton | 2019/02/27 07:06 PM | |
| Arm reference board? | Simon Farnsworth | 2019/02/28 12:34 PM |
| why not? | Doug S | 2019/02/27 12:46 PM |
| why not? (NT) | la mama de murgay | 2019/02/25 10:22 PM |
| Chicken or egg, both. | Ronald Maas | 2019/02/25 01:23 PM |
| ARM announces Ares | Gabriele Svelto | 2019/02/24 03:07 PM |
| ARM announces Ares | juanrga | 2019/03/02 05:40 AM |
| ARM announces Ares | Gabriele Svelto | 2019/03/02 08:08 AM |
| ARM announces Ares | dmcq | 2019/03/02 10:10 AM |
| ARM announces Ares | hobel | 2019/02/22 04:33 PM |
| ARM announces Ares | David Soul | 2019/02/22 06:20 PM |
| Troll | Doug S | 2019/02/23 01:37 AM |
| Troll | David Soul | 2019/02/23 08:59 AM |
| ARM announces Ares | Ennis | 2019/02/23 02:18 AM |
| ARM announces Ares | Foo_ | 2019/02/23 02:38 AM |
| ARM announces Ares | anon | 2019/02/23 03:46 AM |
| ARM announces Ares | dmcq | 2019/02/23 05:41 AM |
| ARM announces Ares | nobody in particular | 2019/02/26 03:58 AM |
| expensive | anonymous2 | 2019/02/27 12:46 AM |
| ARM announces Ares | Howard Chu | 2019/02/27 07:19 AM |
| ARM announces Ares | Howard Chu | 2019/02/27 07:21 AM |
| ARM announces Ares | dmcq | 2019/02/27 07:57 AM |
| ARM announces Ares | Jukka Larja | 2019/02/27 08:11 AM |
| ARM announces Ares | Michael S | 2019/02/27 08:16 AM |
| ARM announces Ares | Doug S | 2019/02/27 12:49 PM |
| ARM announces Ares | Michael S | 2019/02/27 01:43 PM |
| ARM announces Ares | Doug S | 2019/02/27 04:06 PM |
| ARM announces Ares | Gian-Carlo Pascutto | 2019/02/28 05:00 AM |
| ARM announces Ares | Gian-Carlo Pascutto | 2019/02/28 05:02 AM |
| ARM announces Ares | Michael S | 2019/03/01 03:47 AM |
| death by a thousand cuts | Michael S | 2019/03/01 07:27 AM |
| death by a thousand cuts | Foo_ | 2019/03/01 07:37 AM |
| death by a thousand cuts | dmcq | 2019/03/01 12:10 PM |
| ARM announces Ares | Jukka Larja | 2019/02/28 06:31 AM |
| ARM announces Ares | Howard Chu | 2019/02/28 09:17 AM |
| ARM announces Ares | Gabriele Svelto | 2019/02/28 03:02 PM |
| ARM announces Ares | aaron spink | 2019/03/01 01:19 AM |
| ARM announces Ares | Andrew Clough | 2019/02/28 11:32 AM |
| ARM announces Ares | Andrew Clough | 2019/02/28 11:33 AM |
| ARM announces Ares | Foo_ | 2019/03/01 01:55 AM |
| ARM announces Ares | Jukka Larja | 2019/03/01 05:40 AM |
| ARM announces Ares | Howard Chu | 2019/02/27 08:45 AM |
| ARM announces Ares | dmcq | 2019/02/27 09:17 AM |
| ARM announces Ares | dmcq | 2019/02/27 09:21 AM |
| ARM announces Ares | Howard Chu | 2019/02/27 04:03 PM |
| ARM announces Ares | Jukka Larja | 2019/02/28 06:03 AM |
| ARM announces Ares | none | 2019/02/27 11:49 PM |
| ARM announces Ares | Howard Chu | 2019/02/28 04:26 AM |
| ARM announces Ares | Peter E. Fry | 2019/02/28 07:31 PM |
| ARM announces Ares | Adrian | 2019/02/28 10:09 PM |
| ARM announces Ares | Gabriele Svelto | 2019/03/02 12:56 AM |
| ARM announces Ares | Howard Chu | 2019/03/02 10:05 AM |
| ARM announces Ares | Gabriele Svelto | 2019/03/02 02:31 PM |