Lack of Backward Compatibility for Intel AVX512

By: Jukka Larja (roskakori2006.delete@this.gmail.com), May 25, 2022 5:01 am
Room: Moderated Discussions
zzyzx (zzyzx.delete@this.zzyzx.sh) on May 24, 2022 3:18 pm wrote:
> Jukka Larja (roskakori2006.delete@this.gmail.com) on May 24, 2022 2:33 am wrote:
>
> > Sure, it's certainly possible to mess things up, if there just isn't enough CPU time available.
> > My point was just that a game that runs on PS4 doesn't have all that much CPU power available,
> > even if it makes full use of all cores available (which it seems very few games do).
> >
> > Vermintide 2, however, doesn't seem to be such game, based on release
> > dates. Seems that it was ported to consoles after PC release.
> >
> > We actually had (or have, the game's still available) similar issue in Trine 2 on Linux,
> > where X saturated a dual-core CPU so badly that main thread had no time to run, causing
> > crazy stuttering (I don't think average FPS was good either, though). I think we ended
> > up just limiting by default to 30 FPS. We didn't have much budget for that port.
>
> Yeah, appropriate framerate caps will do it, that's just awkward.

Certainly not something one would like people with minimal specs system needing to do.

> It's a bit worse than that. IO_DT doesn't have to be blocked indefinitely for input to be lost, just for 2
> ms at a time as I understand it (for 1000 Hz polling).

Is that linearly proportional to polling rate? So 16 ms for standard 125 Hz polling?

I do think people with 1000 Hz gaming mouse and a dual-core CPU are pretty small niche. That said, gaming mouse can be problematic in itself just because all the non-essential stuff that comes with it uses way too much CPU cycles.

But yeah, dual-core isn't necessarily OK for gaming just because it packs as many or more MIPS than 6 Jaguar cores. Bit like pair of 300 MHz CPUs were much better Gnome desktop experience twenty years ago than single 900 MHz CPU.

> There may not be many games that go to 100% CPU utilization
> if given the chance, but there's no shortage of them with blocks of work that can saturate 8-12T for 2+ ms
> every frame (command buffer build if nothing else). Because of that, limiting framerate doesn't generally even
> fix it. Making it even worse, Win10's scheduler misses a lot of cross-core scheduling opportunities, so it's
> common for IO_DT to get blocked despite a bit of CPU time being actually left over by the game.
>
> I have no idea what perfect game threading would even look like under those constraints.
> Riot appears to have gotten fed up enough with this (for Valorant) to replace something in
> the kernel to make earlier buffering possible, which is at least as scary as it is cool.

Personally, I think using boosted priority threads is just asking for trouble. Maybe it's OK to have N in a system with 2N CPUs, but generally speaking one mostly needs the boosted priority when running out of CPU performance (on all cores). If that happens, things are bad anyway. Getting it right in such situation is not something I would even attempt on general purpose computer (consoles are somewhat different, mostly because their scheduling rules are usually simpler and one tends to notice soon, if some priority decision was less than optimal).

But yeah, I can imagine many games do boost priority on important threads. It sounds like a good idea, after all.

-JLarja
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TopicPosted ByDate
Apple's AVX512---2022/05/11 11:32 PM
  Apple's AVX512Rayla2022/05/12 07:23 AM
    Apple's AVX512---2022/05/12 09:49 AM
      Apple's AVX512---2022/05/12 09:59 AM
  Questions About Apple's AVX512Matt Lohmann2022/05/13 04:21 AM
    Questions About Apple's AVX512---2022/05/13 08:33 AM
      Questions About Apple's AVX512Doug S2022/05/13 09:22 AM
        Questions About Apple's AVX512---2022/05/13 01:05 PM
          Questions About Apple's AVX512Doug S2022/05/13 08:28 PM
            Questions About Apple's AVX512Anon12022/05/13 11:53 PM
            Questions About Apple's AVX512Simon Farnsworth2022/05/14 04:20 AM
              Questions About Apple's AVX512Michael S2022/05/14 11:27 AM
                Questions About Apple's AVX512Doug S2022/05/15 09:50 AM
                  Questions About Apple's AVX512Michael S2022/05/15 12:01 PM
                    Questions About Apple's AVX512Doug S2022/05/15 11:59 PM
                      Questions About Apple's AVX512Michael S2022/05/16 01:29 AM
                    what it takes to really vectorizeRichardC2022/05/16 01:47 PM
                  Questions About Apple's AVX512---2022/05/16 09:22 PM
                    Questions About Apple's AVX512rwessel2022/05/17 12:42 AM
                      Questions About Apple's AVX512anon12022/05/17 03:47 AM
                        Questions About Apple's AVX512Michael S2022/05/17 05:28 AM
                          Questions About Apple's AVX512anon12022/05/18 12:15 AM
                            Questions About Apple's AVX512-.-2022/05/18 02:41 AM
                              Questions About Apple's AVX512Jan Wassenberg2022/05/18 09:23 PM
                                Questions About Apple's AVX512-.-2022/05/19 05:11 AM
                                  Questions About Apple's AVX512Jan Wassenberg2022/05/19 05:45 AM
                                    Questions About Apple's AVX512-.-2022/05/20 03:04 AM
                                      Questions About Apple's AVX512Jan Wassenberg2022/05/20 09:00 PM
                Questions About Apple's AVX512anon12022/05/16 03:44 AM
              Questions About Apple's AVX512Jörn Engel2022/05/15 10:34 PM
                Questions About Apple's AVX512Simon Farnsworth2022/05/16 03:13 AM
                  Questions About Apple's AVX512Jörn Engel2022/05/16 11:52 AM
                    Backward Compatibility for SVE2 CodeCharlie Burnes2022/05/16 05:57 PM
                      Backward Compatibility for SVE2 CodeJörn Engel2022/05/16 11:30 PM
                        Backward Compatibility for SVE2 CodeCharlie Burnes2022/05/17 02:31 AM
                          Backward Compatibility for SVE2 CodeJörn Engel2022/05/17 09:24 AM
                            Backward Compatibility for SVE2 CodeCharlie Burnes2022/05/17 10:21 AM
                              Backward Compatibility for SVE2 CodeJörn Engel2022/05/17 01:11 PM
                                OpenMP SIMD DirectivesCharlie Burnes2022/05/17 03:05 PM
                                  OpenMP SIMD DirectivesJörn Engel2022/05/17 04:14 PM
                                    OpenMP SIMD DirectivesJan Wassenberg2022/05/20 09:12 PM
                                      OpenMP SIMD DirectivesFreddie2022/05/21 06:13 AM
                                        OpenMP SIMD DirectivesJan Wassenberg2022/05/21 09:54 PM
                                      OpenMP SIMD DirectivesJörn Engel2022/05/21 12:23 PM
                                        Alternative to Highway for code that is not SIMD width agnosticCharlie Burnes2022/05/21 09:11 PM
                                          Alternative to Highway for code that is not SIMD width agnosticJan Wassenberg2022/05/21 10:16 PM
                                            Alternative to Highway for code that is not SIMD width agnosticCharlie Burnes2022/05/22 05:30 AM
                                              Removal of NEONDoug S2022/05/22 09:57 AM
                                                Removal of NEONCharlie Burnes2022/05/22 12:12 PM
                                                Removal of NEON-.-2022/05/23 03:23 AM
                                                  Removal of NEONDoug S2022/05/23 07:08 AM
                                                    Removal of NEONdmcq2022/05/23 11:59 AM
                                                  Removal of NEONblaine2022/05/24 09:40 PM
                                              Alternative to Highway for code that is not SIMD width agnosticJan Wassenberg2022/05/22 11:06 AM
                                                Alternative to Highway for code that is not SIMD width agnosticCharlie Burnes2022/05/22 12:06 PM
                                                  Alternative to Highway for code that is not SIMD width agnosticJan Wassenberg2022/05/22 09:35 PM
                                              Alternative to Highway for code that is not SIMD width agnostic-.-2022/05/23 03:28 AM
                                          Alternative to Highway for code that is not SIMD width agnosticAdrian2022/05/22 04:04 AM
                                            Alternative to Highway for code that is not SIMD width agnosticCharlie Burnes2022/05/22 06:20 AM
                                          Alternative to Highway for code that is not SIMD width agnosticJörn Engel2022/05/22 12:13 PM
                                            Alternative to Highway for code that is not SIMD width agnosticCharlie Burnes2022/05/22 12:53 PM
                                              Alternative to Highway for code that is not SIMD width agnosticJörn Engel2022/05/22 01:49 PM
                                                Unaligned Loads and StoresCharlie Burnes2022/05/22 04:34 PM
                                                Alternative to Highway for code that is not SIMD width agnosticJan Wassenberg2022/05/22 09:46 PM
                                                  Unaligned Loads and StoresCharlie Burnes2022/05/22 11:46 PM
                                                    Unaligned Loads and StoresJan Wassenberg2022/05/23 04:34 AM
                                                  Is Highway a full compiler or yet another LLVM front-end, like icpc ? (NT)Michael S2022/05/23 12:12 AM
                                                    Is Highway a full compiler or yet another LLVM front-end, like icpc ?none2022/05/23 12:57 AM
                                                      Is Highway a full compiler or yet another LLVM front-end, like icpc ?Michael S2022/05/23 01:08 AM
                                                        Is Highway a full compiler or yet another LLVM front-end, like icpc ?Jan Wassenberg2022/05/23 04:38 AM
                                        OpenMP SIMD DirectivesJan Wassenberg2022/05/21 10:07 PM
                                          OpenMP SIMD DirectivesJörn Engel2022/05/22 12:25 PM
                                            OpenMP SIMD DirectivesJan Wassenberg2022/05/22 09:56 PM
                                              OpenMP SIMD DirectivesMichael S2022/05/23 01:32 AM
                                                OpenMP SIMD DirectivesJan Wassenberg2022/05/23 04:49 AM
                                                  OpenMP SIMD DirectivesMichael S2022/05/23 12:04 PM
                                                    OpenMP SIMD DirectivesJan Wassenberg2022/05/23 09:43 PM
                                        OpenMP SIMD Directivesanon22022/05/22 10:42 PM
                                          OpenMP SIMD DirectivesJörn Engel2022/05/22 11:11 PM
                                            OpenMP SIMD Directivesanon22022/05/22 11:47 PM
                                              TemplatesMichael S2022/05/23 01:52 AM
                                                Templatesanon22022/05/23 02:36 AM
                                                  At least use a handle unique in the thread you post in... (NT)anon22022/05/23 07:16 AM
                                              TemplatesJörn Engel2022/05/23 09:41 AM
                              Backward Compatibility for SVE2 Codeanonymou52022/05/17 01:36 PM
                                Lack of Backward Compatibility for Intel AVX512Charlie Burnes2022/05/17 02:22 PM
                                  Lack of Backward Compatibility for Intel AVX512anonymou52022/05/18 02:15 AM
                                    Lack of Backward Compatibility for Intel AVX512anon22022/05/18 02:36 AM
                                      Lack of Backward Compatibility for Intel AVX512anonymou52022/05/18 04:06 AM
                                        Lack of Backward Compatibility for Intel AVX512Michael S2022/05/18 04:36 AM
                                          Lack of Backward Compatibility for Intel AVX512me2022/05/18 04:50 AM
                                            Lack of Backward Compatibility for Intel AVX512Jukka Larja2022/05/18 05:47 AM
                                              Lack of Backward Compatibility for Intel AVX512me2022/05/18 08:18 AM
                                              Lack of Backward Compatibility for Intel AVX512Doug S2022/05/18 09:26 AM
                                                Lack of Backward Compatibility for Intel AVX512Brett2022/05/18 10:03 AM
                                                  Lack of Backward Compatibility for Intel AVX512me2022/05/18 10:35 AM
                                                    Lack of Backward Compatibility for Intel AVX512Jan Wassenberg2022/05/18 09:31 PM
                                                      Lack of Backward Compatibility for Intel AVX512Jukka Larja2022/05/19 04:58 AM
                                                        Lack of Backward Compatibility for Intel AVX512Jan Wassenberg2022/05/19 05:55 AM
                                                          Lack of Backward Compatibility for Intel AVX512Jukka Larja2022/05/19 10:09 AM
                                                            Why Is AVX 512 Useful for RPCS3?-.-2022/06/15 06:04 PM
                                                              Why Is AVX 512 Useful for RPCS3?Jukka Larja2022/06/15 08:33 PM
                                                    Lack of Backward Compatibility for Intel AVX512Jukka Larja2022/05/19 04:56 AM
                                                      Lack of Backward Compatibility for Intel AVX512Jan Wassenberg2022/05/19 05:49 AM
                                                        Lack of Backward Compatibility for Intel AVX512Jukka Larja2022/05/19 10:14 AM
                                                          Lack of Backward Compatibility for Intel AVX512Jan Wassenberg2022/05/19 11:19 AM
                                                            Lack of Backward Compatibility for Intel AVX512Jukka Larja2022/05/20 09:04 AM
                                                              Lack of Backward Compatibility for Intel AVX512zzyzx2022/05/20 12:48 PM
                                                                Lack of Backward Compatibility for Intel AVX512Jukka Larja2022/05/20 08:48 PM
                                                                  Lack of Backward Compatibility for Intel AVX512zzyzx2022/05/21 06:44 PM
                                                                    Lack of Backward Compatibility for Intel AVX512Jukka Larja2022/05/21 08:48 PM
                                                                      Lack of Backward Compatibility for Intel AVX512zzyzx2022/05/22 01:46 AM
                                                                        Lack of Backward Compatibility for Intel AVX512Jukka Larja2022/05/22 04:32 AM
                                                                          Lack of Backward Compatibility for Intel AVX512zzyzx2022/05/22 03:06 PM
                                                                            Lack of Backward Compatibility for Intel AVX512Jukka Larja2022/05/22 11:59 PM
                                                                              Lack of Backward Compatibility for Intel AVX512zzyzx2022/05/23 10:02 PM
                                                                                Lack of Backward Compatibility for Intel AVX512Jukka Larja2022/05/24 01:33 AM
                                                                                  Lack of Backward Compatibility for Intel AVX512zzyzx2022/05/24 02:18 PM
                                                                                    Lack of Backward Compatibility for Intel AVX512Jukka Larja2022/05/25 05:01 AM
                                                                                      Lack of Backward Compatibility for Intel AVX512zzyzx2022/05/25 02:02 PM
                                                      Lack of Backward Compatibility for Intel AVX512Eugene Nalimov2022/05/19 09:25 PM
                                                        Lack of Backward Compatibility for Intel AVX512Jukka Larja2022/05/20 08:34 AM
                                                  Lack of Backward Compatibility for Intel AVX512Jan Wassenberg2022/05/18 09:40 PM
                                                    Lack of Backward Compatibility for Intel AVX512Andrey2022/05/19 08:26 AM
                                                    Lack of Backward Compatibility for Intel AVX512Brett2022/05/19 10:23 AM
                                                      Lack of Backward Compatibility for Intel AVX512Andrey2022/05/19 12:50 PM
                                                        Lack of Backward Compatibility for Intel AVX512Brett2022/05/20 10:52 PM
                                                  Lack of Backward Compatibility for Intel AVX512Adrian2022/05/18 11:22 PM
                                                  Lack of Backward Compatibility for Intel AVX512Brendan2022/05/19 03:32 AM
                                                Lack of Backward Compatibility for Intel AVX512Jan Wassenberg2022/05/18 09:29 PM
                                                  Lack of Backward Compatibility for Intel AVX512Michael S2022/05/19 12:14 AM
                                                    Lack of Backward Compatibility for Intel AVX512Jan Wassenberg2022/05/19 06:02 AM
                                                      Lack of Backward Compatibility for Intel AVX512Michael S2022/05/19 07:13 AM
                                                        Lack of Backward Compatibility for Intel AVX512Jan Wassenberg2022/05/20 12:34 AM
                                                          Lack of Backward Compatibility for Intel AVX512Michael S2022/05/20 01:48 AM
                                                          OT Documentation on JPEG XL - site certificate brokenMichael S2022/05/20 02:17 AM
                                                            OT Documentation on JPEG XL - site certificate brokenJan Wassenberg2022/05/20 09:18 PM
                                                    Lack of Backward Compatibility for Intel AVX512-.-2022/05/20 02:55 AM
                                                      Lack of Backward Compatibility for Intel AVX512Michael S2022/05/20 04:51 AM
                                                        Lack of Backward Compatibility for Intel AVX512Jan Wassenberg2022/05/20 09:54 PM
                                                          Lack of Backward Compatibility for Intel AVX512Jan Wassenberg2022/05/20 09:57 PM
                                                            Lack of Backward Compatibility for Intel AVX512Michael S2022/05/21 09:57 AM
                                                              Lack of Backward Compatibility for Intel AVX512---2022/05/21 05:59 PM
                                                                Adding instructions to NEON??Doug S2022/05/22 10:01 AM
                                                                  Adding instructions to NEON??---2022/05/22 12:59 PM
                                                                    Adding instructions to NEON??Doug S2022/05/22 07:46 PM
                                                                      Adding instructions to NEON??Michael S2022/05/23 12:04 AM
                                                                        Adding instructions to NEON??anonymou52022/05/24 03:02 PM
                                                                      Adding instructions to NEON??Ungo2022/05/23 01:05 AM
                                                                        Adding instructions to NEON??---2022/05/23 05:49 AM
                                                                          Adding instructions to NEON??Ungo2022/05/23 08:01 PM
                                                                            Adding instructions to NEON??---2022/05/24 09:26 AM
                                                                      Adding instructions to NEON??---2022/05/23 05:56 AM
                                                                Lack of Backward Compatibility for Intel AVX512noko2022/05/23 11:29 AM
                                                              Lack of Backward Compatibility for Intel AVX512Jan Wassenberg2022/05/21 10:47 PM
                                                                Lack of Backward Compatibility for Intel AVX512Michael S2022/05/22 12:40 AM
                                                                  Lack of Backward Compatibility for Intel AVX512Jan Wassenberg2022/05/22 03:06 AM
                                                                    Lack of Backward Compatibility for Intel AVX512Michael S2022/05/22 04:12 AM
                                                                      Lack of Backward Compatibility for Intel AVX512Jan Wassenberg2022/05/22 04:53 AM
                                                                        Lack of Backward Compatibility for Intel AVX512Michael S2022/05/22 05:15 AM
                                                                          Lack of Backward Compatibility for Intel AVX512Jan Wassenberg2022/05/22 10:56 AM
                                              Lack of Backward Compatibility for Intel AVX512-.-2022/05/18 04:23 PM
                                                Sierra Forest Xeons - E Cores OnlyCharlie Burnes2022/05/19 02:11 AM
                                                  Sierra Forest Xeons - E Cores OnlyBrendan2022/05/19 03:42 AM
                                                    Sierra Forest Xeons - E Cores OnlyCharlie Burnes2022/05/19 04:30 AM
                                                      Sierra Forest Xeons - E Cores OnlyBrendan2022/05/20 03:06 AM
                                                        Sierra Forest Xeons - E Cores OnlyLinus Torvalds2022/05/20 10:32 AM
                                                          Sierra Forest Xeons - E Cores OnlyMark2022/05/20 11:15 AM
                                                            Sierra Forest Xeons - E Cores OnlyAndrey2022/05/20 02:34 PM
                                                            Sierra Forest Xeons - E Cores OnlyBrendan2022/05/20 04:29 PM
                                                            Sierra Forest Xeons - E Cores OnlyBjörn Ragnar Björnsson2022/05/20 04:54 PM
                                                              Sierra Forest Xeons - E Cores OnlyBrendan2022/05/20 07:42 PM
                                                                Sierra Forest Xeons - E Cores OnlyLinus Torvalds2022/05/20 11:06 PM
                                                                  Sierra Forest Xeons - E Cores Onlyanon22022/05/21 12:45 AM
                                                                    Sierra Forest Xeons - E Cores OnlyDoug S2022/05/21 11:33 AM
                                                                      Sierra Forest Xeons - E Cores OnlyBrett2022/05/21 04:18 PM
                                                                      Sierra Forest Xeons - E Cores Onlyanon22022/05/22 12:32 AM
                                                                  Sierra Forest Xeons - E Cores Onlyrwessel2022/05/21 04:05 AM
                                                                  Sierra Forest Xeons - E Cores OnlyBrendan2022/05/21 09:36 AM
                                                                    Sierra Forest Xeons - E Cores OnlyAndrey2022/05/21 10:30 AM
                                                                      Sierra Forest Xeons - E Cores OnlyBrendan2022/05/21 11:58 AM
                                                                        Sierra Forest Xeons - E Cores OnlyLinus Torvalds2022/05/21 03:58 PM
                                                                          Sierra Forest Xeons - E Cores Only-.-2022/05/21 06:03 PM
                                                                          Sierra Forest Xeons - E Cores OnlyBrendan2022/05/22 10:18 AM
                                                                            Sierra Forest Xeons - E Cores OnlyAndrey2022/05/22 03:18 PM
                                                                              Sierra Forest Xeons - E Cores OnlyBrendan2022/05/22 07:41 PM
                                                                                Sierra Forest Xeons - E Cores OnlyLinus Torvalds2022/05/22 08:49 PM
                                                                                  Proposal for heterogeneous runtime dispatchJan Wassenberg2022/05/22 10:11 PM
                                                                                    Proposal for heterogeneous runtime dispatchJörn Engel2022/05/22 10:51 PM
                                                                                      Proposal for heterogeneous runtime dispatchAdrian2022/05/22 11:25 PM
                                                                                        CorrectionAdrian2022/05/22 11:34 PM
                                                                                      Proposal for heterogeneous runtime dispatchJan Wassenberg2022/05/22 11:41 PM
                                                                                    Proposal for heterogeneous runtime dispatchUngo2022/05/23 12:27 AM
                                                                                      Proposal for heterogeneous runtime dispatchMichael S2022/05/23 02:14 AM
                                                                                      Heterogeneous ISA?Jan Wassenberg2022/05/23 05:11 AM
                                                                                        RISC-VPeter Lewis2022/05/30 02:45 PM
                                                                                          RISC-VHeikki Kultala2022/05/31 07:59 AM
                                                                                            RISC-VPeter Lewis2022/05/31 03:34 PM
                                                                                              RISC-VDoug S2022/05/31 11:45 PM
                                                                                                RISC-VPeter Lewis2022/06/01 02:55 PM
                                                                                                  RISC-VDoug S2022/06/01 08:50 PM
                                                                                                    RISC-V Eric Fink2022/06/01 11:20 PM
                                                                                                      Process...Anon2022/06/01 11:35 PM
                                                                                                        Process...Peter Lewis2022/06/02 12:54 AM
                                                                                                        Process...Michael S2022/06/02 03:42 AM
                                                                                                        Process...Eric Fink2022/06/02 04:43 AM
                                                                                                          Process...---2022/06/02 12:06 PM
                                                                                                            Process...Peter Lewis2022/06/02 01:01 PM
                                                                                                              Process... ItaniumRichard S2022/06/02 04:14 PM
                                                                                                                ItaniumPeter Lewis2022/06/02 05:07 PM
                                                                                                                  ItaniumRichard S2022/06/02 08:27 PM
                                                                                                                Process... ItaniumMichael S2022/06/03 03:39 AM
                                                                                                                  Process... ItaniumAdrian2022/06/03 04:26 AM
                                                                                                                    Process... ItaniumMichael S2022/06/03 05:32 AM
                                                                                                                      Process... ItaniumAdrian2022/06/03 06:14 AM
                                                                                                              Process...Doug S2022/06/02 09:54 PM
                                                                                                                Process...Peter Lewis2022/06/03 12:19 AM
                                                                                                            Process...Mark Roulo2022/06/02 07:15 PM
                                                                                                              Process...Michael S2022/06/03 04:06 AM
                                                                                                            Process...Brendan2022/06/02 08:13 PM
                                                                                                          Process...anon22022/06/02 03:13 PM
                                                                                                            Process...Eric Fink2022/06/02 09:00 PM
                                                                                                              Process...Michael S2022/06/03 04:16 AM
                                                                                                                Process...Doug S2022/06/03 07:57 AM
                                                                                                                  Process...James2022/06/04 03:46 AM
                                                                                                                    Process...Doug S2022/06/04 08:04 AM
                                                                                                                      Process...Anon42022/06/04 09:31 AM
                                                                                                                      Process...James2022/06/04 09:49 AM
                                                                                                          Process...Anon2022/06/05 01:55 AM
                                                                                                        There is no 5nm or 7nm anywhere.Heikki Kultala2022/06/02 09:45 AM
                                                                                                          There is no 5nm or 7nm anywhere.Doug S2022/06/02 10:10 AM
                                                                                                            There is no 5nm or 7nm anywhere.Heikki Kultala2022/06/02 10:50 AM
                                                                                                            There is no 5nm or 7nm anywhere.Peter Lewis2022/06/02 11:07 AM
                                                                                                            There is no 5nm or 7nm anywhere.anon22022/06/02 03:30 PM
                                                                                                          There is no 5nm or 7nm anywhere.Anon2022/06/05 12:41 AM
                                                                                                    RISC-VPeter Lewis2022/06/02 12:22 AM
                                                                                                      RISC-VFreddie2022/06/02 06:22 AM
                                                                                                        RISC-V---2022/06/02 12:25 PM
                                                                                                    RISC-VAdrian2022/06/02 12:47 AM
                                                                                                      RISC-VDoug S2022/06/02 10:18 AM
                                                                                                      x86 vs RISCHeikki Kultala2022/06/02 11:04 AM
                                                                                                        x86 vs RISCAnon2022/06/02 01:49 PM
                                                                                                          x86 vs RISCTim Mc2022/06/02 03:20 PM
                                                                                                          x86 vs RISCDoug S2022/06/02 10:01 PM
                                                                                                            x86 vs RISCAnon2022/06/05 12:55 AM
                                                                                                              x86 vs RISCPeter Lewis2022/06/05 03:23 PM
                                                                                                                x86 vs RISCAnon2022/06/05 03:32 PM
                                                                                                                Register Windows.Mark Roulo2022/06/06 08:56 AM
                                                                                                                  Register Windows.blaine2022/06/06 12:51 PM
                                                                                                                    S/W managed TLB missesMark Roulo2022/06/06 01:18 PM
                                                                                                                      S/W managed TLB missesMichael S2022/06/06 01:31 PM
                                                                                                                      S/W managed TLB missesblaine2022/06/06 10:53 PM
                                                                                                                      S/W managed TLB missesvonk2022/06/07 12:04 AM
                                                                                                                      S/W managed TLB missesDoug S2022/06/07 07:50 AM
                                                                                                                        S/W managed TLB missesanon22022/06/07 09:21 PM
                                                                                                                          S/W managed TLB missesJames2022/06/08 01:07 AM
                                                                                                                            S/W managed TLB missesMichael S2022/06/08 01:20 AM
                                                                                                                            S/W managed TLB missesanon22022/06/08 01:53 AM
                                                                                                                          Fairchild Clipper had h/w table walkPaul A. Clayton2022/06/09 11:46 AM
                                                                                                                            Fairchild Clipper had h/w table walkSimon Farnsworth2022/06/10 12:58 AM
                                                                                                                    Register Windows.anon22022/06/06 02:21 PM
                                                                                                        x86 vs RISCEric Fink2022/06/02 09:11 PM
                                                                                                          x86 vs RISCMichael S2022/06/03 05:49 AM
                                                                                                            x86 vs RISCBrett2022/06/03 11:32 AM
                                                                                                            x86 vs RISCAnon2022/06/05 01:23 AM
                                                                                                        x86 vs RISCAdrian2022/06/02 10:47 PM
                                                                                                      RISC-VAnon2022/06/02 01:33 PM
                                                                                                  RISC-V lifespan; encodings2022/06/04 10:39 AM
                                                                                                    µop CachePeter Lewis2022/06/04 05:56 PM
                                                                                                      x86 decode cores2022/06/04 11:32 PM
                                                                                                        x86 decode coresPeter Lewis2022/06/05 12:26 AM
                                                                                                        x86 decode coresPeter Lewis2022/06/06 03:22 AM
                                                                                                      µop CacheDoug S2022/06/05 10:08 AM
                                                                                                    RISC-V lifespan; encodingsEric Fink2022/06/05 03:26 AM
                                                                                                      RISC-V lifespan; encodings2022/06/05 06:37 AM
                                                                                                        RISC-V lifespan; encodingsanonymou52022/06/05 11:32 AM
                                                                                                          RISC-V lifespan; encodingsAnon2022/06/05 02:09 PM
                                                                                                          RISC-V lifespan; encodings2022/06/06 06:52 AM
                                                                                                            RISC-V lifespan; encodingsanonymou52022/06/06 07:07 AM
                                                                                                              RISC-V lifespan; encodingsAdrian2022/06/06 09:59 AM
                                                                                                                RISC-V lifespan; encodingsAnon2022/06/06 11:38 AM
                                                                                                                  RISC-V lifespan; encodingsAdrian2022/06/07 12:21 AM
                                                                                                                    RISC-V lifespan; encodingsMichael S2022/06/07 01:23 AM
                                                                                                                      RISC-V lifespan; encodingsAdrian2022/06/07 04:20 AM
                                                                                                                        RISC-V lifespan; encodingsBrett2022/06/07 05:04 PM
                                                                                                                          RISC-V lifespan; encodingsAnon2022/06/07 08:58 PM
                                                                                                                            RISC-V lifespan; encodings2022/06/08 07:07 AM
                                                                                                                              RISC-V lifespan; encodingsAnon2022/06/08 09:25 AM
                                                                                                                                RISC-V lifespan; encodings2022/06/08 11:07 AM
                                                                                                                RISC-V lifespan; encodingsBrett2022/06/06 12:50 PM
                                                                                                                  RISC-V lifespan; encodingsAdrian2022/06/06 11:59 PM
                                                                                                              RISC-V lifespan; encodingsAdrian2022/06/06 09:59 AM
                                                                                                              RISC-V lifespan; encodings2022/06/06 10:08 AM
                                                                                                    RISC-V lifespan; encodings---2022/06/05 05:12 PM
                                                                                                      RISC-V lifespan; encodingsAnon2022/06/05 05:48 PM
                                                                                                      RISC-V lifespan; encodingsJukka Larja2022/06/05 09:18 PM
                                                                                                        Profile-Guided OptimizationPeter Lewis2022/06/06 02:55 AM
                                                                                                          Profile-Guided Optimizationrwessel2022/06/06 04:26 AM
                                                                                                            Profile-Guided OptimizationDoug S2022/06/06 09:44 AM
                                                                                                              Profile-Guided OptimizationAndrew Clough2022/06/06 10:08 AM
                                                                                                              Profile-Guided Optimizationrwessel2022/06/06 10:57 AM
                                                                                                                Example of JIT cacheMark Roulo2022/06/06 01:10 PM
                                                                                                                  Example of JIT cacherwessel2022/06/06 01:59 PM
                                                                                                                    Example of JIT cacheMark Roulo2022/06/07 05:40 AM
                                                                                                                      Example of JIT cacherwessel2022/06/07 06:46 AM
                                                                                                              Profile-Guided OptimizationSimon Farnsworth2022/06/07 01:47 AM
                                                                                                          Profile-Guided OptimizationJukka Larja2022/06/06 07:42 PM
                                                                                                      Accurate branch prediction is not everythingPaul A. Clayton2022/06/14 10:48 AM
                                                                                                        Accurate branch prediction is not everything---2022/06/14 12:40 PM
                                                                                                          Accurate branch prediction is not everythingJames2022/06/14 02:41 PM
                                                                                                        Accurate branch prediction is not everythingdmcq2022/06/15 08:38 AM
                                                                                                          Accurate branch prediction is not everythingnone2022/06/15 08:57 AM
                                                                                                            Accurate branch prediction is not everythingdmcq2022/06/15 09:23 AM
                                                                                                            Accurate branch prediction is not everythingDoug S2022/06/15 12:55 PM
                                                                                                              Accurate branch prediction is not everythingdmcq2022/06/15 03:38 PM
                                                                                                Adding Neural Engines to x86Peter Lewis2022/06/04 06:06 PM
                                                                                                  Adding Neural Engines to x86Freddie2022/06/05 11:07 AM
                                                                                                    Adding Neural Engines to x86Peter Lewis2022/06/05 03:20 PM
                                                                                                      Adding Neural Engines to x86---2022/06/05 05:40 PM
                                                                                                        Adding Neural Engines to x86Peter Lewis2022/06/05 08:22 PM
                                                                                                  Adding Neural Engines to x86---2022/06/05 05:34 PM
                                                                                                    Missing metricsAnon2022/06/05 05:59 PM
                                                                                                    Adding Neural Engines to x86Peter Lewis2022/06/06 02:41 AM
                                                                                            RISC-VJan Wassenberg2022/05/31 09:00 PM
                                                                                              RISC-VPeter Lewis2022/06/01 03:02 PM
                                                                                                RISC-VJan Wassenberg2022/06/01 09:17 PM
                                                                                              RISC-V Eric Fink2022/06/01 11:25 PM
                                                                                                RISC-VJan Wassenberg2022/06/02 10:10 PM
                                                                                                  RISC-VEric Fink2022/06/02 11:23 PM
                                                                                                    RISC-VJan Wassenberg2022/06/03 10:10 PM
                                                                                                      RISC-VJukka Larja2022/06/03 11:15 PM
                                                                                                        RISC-VJan Wassenberg2022/06/04 10:23 PM
                                                                                                      RISC-VEric Fink2022/06/04 04:59 AM
                                                                                                        RISC-VJan Wassenberg2022/06/04 10:14 PM
                                                                                                    RISC-VLinus Torvalds2022/06/04 09:17 AM
                                                                                                      RISC-V-.-2022/06/04 04:56 PM
                                                                                                        RISC-VLinus Torvalds2022/06/04 07:00 PM
This Post has been deleted
                                                                                                      RISC-VEric Fink2022/06/05 03:31 AM
                                                                                                        SIMD in parsingWilco2022/06/05 04:40 AM
                                                                                                          SIMD in parsingFoo_2022/06/06 01:19 AM
                                                                                                            SIMD in parsingMichael S2022/06/06 01:43 AM
                                                                                                              SIMD in parsingLinus Torvalds2022/06/06 08:40 AM
                                                                                                          SIMD in parsing-.-2022/06/08 04:28 AM
                                                                                              RISC-V V-extensionHeikki Kultala2022/06/02 09:40 AM
                                                                                                RISC-V V-extensionJan Wassenberg2022/06/02 10:09 PM
                                                                                            RISC-VPer Hesselgren2022/06/01 04:40 AM
                                                                                    Proposal for heterogeneous runtime dispatchBrendan2022/05/23 12:51 AM
                                                                                    Proposal for heterogeneous runtime dispatchBrendan2022/05/23 12:51 AM
                                                                                      Proposal for heterogeneous runtime dispatchBjörn Ragnar Björnsson2022/05/23 04:41 PM
                                                                                        Proposal for heterogeneous runtime dispatchJan Wassenberg2022/05/23 09:38 PM
                                                                                          Proposal for heterogeneous runtime dispatchJukka Larja2022/05/24 01:48 AM
                                                                                            Proposal for heterogeneous runtime dispatchJan Wassenberg2022/05/24 03:35 AM
                                                                                              Proposal for heterogeneous runtime dispatchJukka Larja2022/05/24 06:38 AM
                                                                                                Proposal for heterogeneous runtime dispatchJan Wassenberg2022/05/28 11:51 PM
                                                                                          Proposal for heterogeneous runtime dispatchMichael S2022/05/24 02:48 AM
                                                                                            SIMD applicabilityJan Wassenberg2022/05/24 03:50 AM
                                                                                              Don't mix up SIMD support with AVX2 vs AVX-512 heterogeneityMark Roulo2022/05/24 06:41 AM
                                                                                                Don't mix up SIMD support with AVX2 vs AVX-512 heterogeneityJan Wassenberg2022/05/24 10:23 AM
                                                                                                  Don't mix up SIMD support with AVX2 vs AVX-512 heterogeneitySimon Farnsworth2022/05/24 12:56 PM
                                                                                                Don't mix up SIMD support with AVX2 vs AVX-512 heterogeneityBrendan2022/05/24 04:09 PM
                                                                                                  Don't mix up SIMD support with AVX2 vs AVX-512 heterogeneityDoug S2022/05/24 09:03 PM
                                                                                                    Don't mix up SIMD support with AVX2 vs AVX-512 heterogeneityBrendan2022/05/25 04:37 PM
                                                                                                  Don't mix up SIMD support with AVX2 vs AVX-512 heterogeneityJukka Larja2022/05/25 05:24 AM
                                                                                                    Don't mix up SIMD support with AVX2 vs AVX-512 heterogeneityBrendan2022/05/25 05:16 PM
                                                                                                      Don't mix up SIMD support with AVX2 vs AVX-512 heterogeneityJukka Larja2022/05/25 07:50 PM
                                                                                            Proposal for heterogeneous runtime dispatchAdrian2022/05/24 01:39 PM
                                                                                              Proposal for heterogeneous runtime dispatchJörn Engel2022/05/24 08:41 PM
                                                                                              Proposal for heterogeneous runtime dispatchJan Wassenberg2022/05/28 11:51 PM
                                                                                                Proposal for heterogeneous runtime dispatchAdrian2022/05/29 03:33 AM
                                                                                                  Proposal for heterogeneous runtime dispatchAdrian2022/05/29 03:48 AM
                                                                                                  Proposal for heterogeneous runtime dispatchJan Wassenberg2022/05/29 10:05 AM
                                                                                                    Proposal for heterogeneous runtime dispatchAdrian2022/05/29 12:39 PM
                                                                                                      turbostat instructionsJan Wassenberg2022/05/29 09:51 PM
                                                                                                  Proposal for heterogeneous runtime dispatchSome dude2022/05/30 11:04 AM
                                                                                          Proposal for heterogeneous runtime dispatchSimon Farnsworth2022/05/24 03:21 AM
                                                                                  Sierra Forest Xeons - E Cores OnlyBrendan2022/05/22 11:41 PM
                                                                                    Sierra Forest Xeons - E Cores OnlySimon Farnsworth2022/05/23 02:03 AM
                                                                                      Sierra Forest Xeons - E Cores OnlyBrendan2022/05/23 08:12 AM
                                                                                        Sierra Forest Xeons - E Cores OnlySimon Farnsworth2022/05/24 03:18 AM
                                                                                          Sierra Forest Xeons - E Cores Onlyrwessel2022/05/24 07:22 AM
                                                                                    Sierra Forest Xeons - E Cores OnlyLinus Torvalds2022/05/23 11:30 AM
                                                                                      Sierra Forest Xeons - E Cores OnlyBrendan2022/05/23 12:13 PM
                                                                                        Sierra Forest Xeons - E Cores OnlyLinus Torvalds2022/05/23 03:54 PM
                                                                                          Sierra Forest Xeons - E Cores Only2022/05/24 10:49 AM
                                                                                            Sierra Forest Xeons - E Cores OnlyLinus Torvalds2022/05/24 11:11 AM
                                                                                              Sierra Forest Xeons - E Cores Only2022/05/24 02:12 PM
                                                                                                Sierra Forest Xeons - E Cores OnlyLinus Torvalds2022/05/24 03:33 PM
                                                                                          Sierra Forest Xeons - E Cores OnlyBrendan2022/05/24 12:44 PM
                                                                                            Sierra Forest Xeons - E Cores OnlySimon Farnsworth2022/05/24 01:14 PM
                                                                                              Sierra Forest Xeons - E Cores Only2022/05/24 02:37 PM
                                                                                                Sierra Forest Xeons - E Cores OnlyJames2022/05/26 02:42 AM
                                                                                              Sierra Forest Xeons - E Cores OnlyBrendan2022/05/24 08:53 PM
                                                                                              Sierra Forest Xeons - E Cores OnlyJörn Engel2022/05/24 11:09 PM
                                                                                                Sierra Forest Xeons - E Cores OnlySimon Farnsworth2022/05/25 01:27 AM
                                                                                                  Sierra Forest Xeons - E Cores OnlyJan Wassenberg2022/05/28 11:49 PM
                                                                                                    Sierra Forest Xeons - E Cores OnlyMichael S2022/05/29 01:15 AM
                                                                                                      Sierra Forest Xeons - E Cores OnlyLinus Torvalds2022/05/29 09:48 AM
                                                                                                        Sierra Forest Xeons - E Cores Onlyanonymou52022/05/29 10:35 AM
                                                                                                          Sierra Forest Xeons - E Cores OnlyLinus Torvalds2022/05/30 10:07 AM
                                                                                                            Sierra Forest Xeons - E Cores Onlyanonymou52022/05/30 11:46 AM
                                                                                                        Sierra Forest Xeons - E Cores OnlyMichael S2022/05/29 10:59 AM
                                                                                                      Sierra Forest Xeons - E Cores OnlyJan Wassenberg2022/05/29 10:20 AM
                                                                                                        Sierra Forest Xeons - E Cores OnlyMichael S2022/05/29 12:38 PM
                                                                                                          Sierra Forest Xeons - E Cores OnlyJörn Engel2022/05/29 01:10 PM
                                                                                                          Sierra Forest Xeons - E Cores Only-.-2022/05/29 04:28 PM
                                                                                                            Sierra Forest Xeons - E Cores OnlyMichael S2022/05/30 12:32 AM
                                                                                                              Sierra Forest Xeons - E Cores Only-.-2022/05/30 01:44 AM
                                                                                                                Sierra Forest Xeons - E Cores OnlyMichael S2022/05/30 02:12 AM
                                                                                                                  Sierra Forest Xeons - E Cores Only-.-2022/05/30 04:46 AM
                                                                                                          Sierra Forest Xeons - E Cores OnlyJan Wassenberg2022/05/29 09:48 PM
                                                                                                            quick radix mergeMichael S2022/05/30 12:02 AM
                                                                                                              quick radix mergeJan Wassenberg2022/05/30 06:16 AM
                                                                                                                quick radix mergeMichael S2022/05/30 07:36 AM
                                                                                                                  quick radix mergeJan Wassenberg2022/05/30 09:07 PM
                                                                                                                quick radix mergerwessel2022/05/30 08:36 AM
                                                                                      Sierra Forest Xeons - E Cores OnlyChristian Bornträger2022/05/24 07:06 AM
                                                                                        Sierra Forest Xeons - E Cores Onlyrwessel2022/05/24 07:40 AM
                                                                          Sierra Forest Xeons - E Cores Only2022/05/22 10:51 AM
                                                                            Sierra Forest Xeons - E Cores OnlyDoug S2022/05/22 07:52 PM
                                                                              Linux doesn't have a plan for hetero-ISA CPUs2022/05/23 05:03 AM
                                                                                Linux doesn't have a plan for hetero-ISA CPUsDoug S2022/05/23 07:35 AM
                                                                                  Linux doesn't have a plan for hetero-ISA CPUsBrendan2022/05/23 10:44 AM
                                                                                    Linux doesn't have a plan for hetero-ISA CPUsGionatan Danti2022/05/24 05:29 AM
                                                                            Sierra Forest Xeons - E Cores OnlySimon Farnsworth2022/05/23 03:16 AM
                                                                    Sierra Forest Xeons - E Cores OnlyJukka Larja2022/05/21 09:23 PM
                                                          well said (NT)Michael S2022/05/21 10:48 AM
                                                  Sierra Forest Xeons - E Cores OnlyMichael S2022/05/19 04:00 AM
                                                  Sierra Forest Xeons - E Cores Only-.-2022/05/19 05:25 AM
                                                    Sierra Forest Xeons - E Cores OnlyMichael S2022/05/20 05:29 AM
                                                  Sierra Forest Xeons - E Cores Onlyanonymou52022/05/19 08:46 AM
                                                    Sierra Forest Xeons - E Cores OnlyCharlie Burnes2022/05/19 01:19 PM
                                                      Sierra Forest Xeons - E Cores OnlyAdrian2022/05/19 11:29 PM
                                              Lack of Backward Compatibility for Intel AVX512Adrian2022/05/18 10:57 PM
                                                Lack of Backward Compatibility for Intel AVX512Brett2022/05/19 09:55 AM
                                                  Lack of Backward Compatibility for Intel AVX512Michael S2022/05/19 10:53 AM
                                                  Lack of Backward Compatibility for Intel AVX512Adrian2022/05/19 11:38 PM
                              Backward Compatibility for SVE2 Code---2022/05/17 01:57 PM
                                Backward Compatibility for SVE2 CodeCharlie Burnes2022/05/17 03:12 PM
                                Backward Compatibility for SVE2 Codeanon12022/05/18 01:44 AM
                                  Backward Compatibility for SVE2 CodeSimon Farnsworth2022/05/18 02:03 AM
                                    Backward Compatibility for SVE2 CodeDoug S2022/05/18 09:14 AM
                                      Backward Compatibility for SVE2 Codedmcq2022/05/20 04:43 AM
                                        Backward Compatibility for SVE2 CodeDoug S2022/05/20 09:07 AM
                                          Backward Compatibility for SVE2 Codedmcq2022/05/21 07:35 AM
                                            Backward Compatibility for SVE2 Codedmcq2022/05/21 07:57 AM
                                  Backward Compatibility for SVE2 Code---2022/05/18 08:56 AM
                      Backward Compatibility for SVE2 CodeJan Wassenberg2022/05/17 11:26 AM
                        Backward Compatibility for SVE2 Code---2022/05/17 02:01 PM
                        Use of Highway to provide backward compatibilityCharlie Burnes2022/05/18 02:55 PM
                          Use of Highway to provide backward compatibilityBrett2022/05/18 07:57 PM
                            Use of Highway to provide backward compatibilityJan Wassenberg2022/05/18 09:16 PM
                              Use of Highway to provide backward compatibilityCharlie Burnes2022/05/18 10:03 PM
                                Use of Highway to provide backward compatibilityBrett2022/05/18 10:20 PM
                                  Use of Highway to provide backward compatibility---2022/05/19 12:20 PM
                                    Use of Highway to provide backward compatibilityCharlie Burnes2022/05/19 02:05 PM
                                      Use of Highway to provide backward compatibilityBrett2022/05/19 03:18 PM
                                        Use of Highway to provide backward compatibilityCharlie Burnes2022/05/19 06:29 PM
                                          Use of Highway to provide backward compatibilityJan Wassenberg2022/05/19 08:12 PM
                                            Use of Highway to provide backward compatibilityBrett2022/05/19 09:38 PM
                                            Use of Highway to provide backward compatibilityCharlie Burnes2022/05/21 06:48 AM
                                              Use of Highway to provide backward compatibilityCharlie Burnes2022/05/21 11:36 AM
                                              Use of Highway to provide backward compatibilityJan Wassenberg2022/05/21 09:45 PM
                                                Use of Highway to provide backward compatibilityCharlie Burnes2022/05/22 06:52 AM
        Questions About Apple's AVX512dmcq2022/05/13 03:24 PM
      Questions About Apple's AVX512Matt Lohmann2022/05/13 12:32 PM
        Questions About Apple's AVX512---2022/05/13 01:09 PM
        Questions About Apple's AVX512Anon12022/05/13 02:55 PM
          Questions About Apple's AVX512Matt Lomann2022/05/13 06:02 PM
            Questions About Apple's AVX512---2022/05/13 08:03 PM
            Questions About Apple's AVX512Simon Farnsworth2022/05/14 05:11 AM
              Questions About Apple's AVX512---2022/05/14 11:06 AM
        Questions About Apple's AVX512Adrian2022/05/13 11:35 PM
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