ILP wall vs SIMD

By: vec (novaredasic.delete@this.gmail.com), June 17, 2022 12:44 pm
Room: Moderated Discussions
Why so much recent focus on core size for executing instructions in parallel but still less emphasis on vectors? SVE2 and AMD bringing AVX-512 to Zen 4 are a step forward, at least, but even AMD seem intent on building a wider core (see: comments about Zen 5's issue width from AMD)
SIMD seems like the only way forward for ST performance, at least with a proper SW and HW push, Dennard scaling is over and frequency has run it's course. Logic shrinks continue, but otoh is throwing these transistor budgets at larger cores for diminished ILP returns worthwhile?
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ILP wall vs SIMD vec2022/06/17 12:44 PM
  ILP wall vs SIMD Doug S2022/06/17 12:47 PM
    ILP wall vs SIMD Jan Wassenberg2022/06/18 06:34 AM
      ILP wall vs SIMD Michael S2022/06/18 10:55 AM
        ILP wall vs SIMD ---2022/06/18 04:16 PM
          ILP wall vs SIMD Jan Wassenberg2022/06/18 10:39 PM
            ILP wall vs SIMD ---2022/06/18 11:57 PM
              ILP wall vs SIMD Jukka Larja2022/06/19 01:07 AM
                ILP wall vs SIMD ---2022/06/19 01:33 PM
                  ILP wall vs SIMD Anon2022/06/19 02:59 PM
                    ILP wall vs SIMD Brett2022/06/19 08:34 PM
                  ILP wall vs SIMD Andrey2022/06/20 10:24 AM
                    ILP wall vs SIMD Brett2022/06/20 12:39 PM
  SIMD is less flexible than VLIWMark Roulo2022/06/17 12:56 PM
  ILP wall vs SIMD ---2022/06/17 02:22 PM
    ILP wall vs SIMD M2022/06/17 02:33 PM
      ILP wall vs SIMD Sean M2022/06/17 05:34 PM
        ILP wall vs SIMD Brett2022/06/17 09:24 PM
          ILP wall vs SIMD Sean M2022/06/17 11:28 PM
            ILP wall vs SIMD Brett2022/06/18 01:13 AM
              ILP wall vs SIMD rwessel2022/06/18 02:04 AM
                ILP wall vs SIMD Brett2022/06/18 10:54 AM
                  Three Source Integer Add/Subtract InstructionsGary Kopp2022/06/24 01:35 PM
                    Three Source Integer Add/Subtract InstructionsBrett2022/06/24 07:50 PM
                      Three Source Integer Add/Subtract InstructionsGary Kopp2022/06/25 04:06 AM
                        Three Source LogicalJan Wassenberg2022/06/25 11:29 PM
                          Three Source Logicalhobold2022/06/27 04:06 AM
                            Three Source Logicalrwessel2022/06/27 06:01 PM
                          Three Source Logical-.-2022/06/27 06:37 AM
                            Three Source LogicalJan Wassenberg2022/06/27 11:20 PM
                              Three Source Logical-.-2022/06/28 03:34 AM
                                Three Source LogicalzArchJon2022/06/28 08:00 AM
                                Three Source LogicalJan Wassenberg2022/06/28 10:13 PM
                          Three Source LogicalGary Kopp2022/07/02 01:38 PM
                            Three Source LogicalJan Wassenberg2022/07/02 10:10 PM
    ILP wall vs SIMD Adrian2022/06/18 12:58 AM
    ILP wall vs SIMD Jan Wassenberg2022/06/18 06:45 AM
      ILP wall vs SIMD dmcq2022/06/18 07:36 AM
        ILP wall vs SIMD Jukka Larja2022/06/18 07:49 AM
          ILP wall vs SIMD dmcq2022/06/18 08:48 AM
          ILP wall vs SIMD Jan Wassenberg2022/06/18 10:47 PM
      ILP wall vs SIMD ---2022/06/18 09:29 AM
        ILP wall vs SIMD Jan Wassenberg2022/06/18 11:26 PM
          ILP wall vs SIMD ---2022/06/18 11:50 PM
            ILP wall vs SIMD Jan Wassenberg2022/06/19 02:12 AM
              ILP wall vs SIMD ---2022/06/19 10:29 AM
                ILP wall vs SIMD Jan Wassenberg2022/06/19 09:47 PM
                  ILP wall vs SIMD Mark2022/06/20 02:24 PM
                    ILP wall vs SIMD 4n0n2022/06/20 03:57 PM
                      ILP wall vs SIMD Jan Wassenberg2022/06/20 09:55 PM
                        ILP wall vs SIMD 4n0n2022/06/21 06:13 AM
                          ILP wall vs SIMD Mark2022/06/21 07:50 AM
          Fugaku showsMichael S2022/06/19 01:31 PM
            Fugaku showsJan Wassenberg2022/06/19 09:37 PM
              Fugaku showsMichael S2022/06/20 08:43 AM
            Some results (not conclusive, of course)Mark Roulo2022/06/20 09:30 AM
          Re: Wide system RAM Eric Fink2022/06/20 01:46 AM
            Re: Wide system RAM Ted R2022/06/20 04:24 AM
              Re: Wide system RAM Eric Fink2022/06/20 01:52 PM
        Advantages of Shared AMX HardwareGordon H2022/06/19 03:55 AM
          Advantages of Shared AMX Hardware---2022/06/19 09:25 AM
            Advantages of Shared AMX HardwarezArchJon2022/06/20 09:20 AM
  ILP wall vs SIMD Brendan2022/06/17 04:37 PM
    ILP wall vs SIMD Sean M2022/06/17 07:34 PM
      Enabling/Disabling Hyperthreading Under Software ControlTed R2022/06/17 09:50 PM
        Enabling/Disabling Hyperthreading Under Software Controlanon22022/06/18 12:29 AM
        Enabling/Disabling Hyperthreading Under Software ControlAdrian2022/06/18 01:18 AM
          Enabling/Disabling Hyperthreading Under Software Controlanon22022/06/19 02:24 AM
            Resource sharingPaul A. Clayton2022/06/23 11:52 AM
          Enabling/Disabling Hyperthreading Under Software ControlHeikki Kultala2022/06/19 08:31 PM
            Enabling/Disabling Hyperthreading Under Software ControlTed R2022/06/20 04:52 AM
              Is TLB statically allocated to start with? (NT)Anon2022/06/20 10:18 AM
              Enabling/Disabling Hyperthreading Under Software Controlanon22022/06/20 05:07 PM
                Enabling/Disabling Hyperthreading Under Software ControlTed R2022/06/21 04:44 AM
                  Enabling/Disabling Hyperthreading Under Software ControlAnon2022/06/21 11:43 AM
                    Enabling/Disabling Hyperthreading Under Software ControlTed R2022/06/21 05:58 PM
                  Enabling/Disabling Hyperthreading Under Software Controlanon22022/06/21 03:56 PM
                    Enabling/Disabling Hyperthreading Under Software ControlTed R2022/06/21 05:47 PM
                      Enabling/Disabling Hyperthreading Under Software Controlanon22022/06/21 06:25 PM
          Enabling/Disabling Hyperthreading Under Software ControlBrendan2022/06/20 12:16 AM
            Enabling/Disabling Hyperthreading Under Software ControlTed R2022/06/20 05:09 AM
              Enabling/Disabling Hyperthreading Under Software ControlBrendan2022/06/20 07:44 PM
                Fixing Hyperthreading Problems on LinuxTed R2022/06/21 02:24 AM
                  Fixing Hyperthreading Problems on LinuxBrendan2022/06/22 12:35 AM
                Enabling/Disabling Hyperthreading Under Software ControlAdrian2022/06/21 04:54 AM
      ILP wall vs SIMD Ganon2022/06/17 10:05 PM
        ILP wall vs SIMD Sean M2022/06/17 11:36 PM
      ILP wall vs SIMD Adrian2022/06/18 01:04 AM
  Single-thread performance vs serial or scalar performanceHeikki Kultala2022/06/17 09:59 PM
    Single-thread performance vs serial or scalar performanceTed R2022/06/20 04:45 AM
      Single-thread performance vs serial or scalar performanceAdrian2022/06/21 05:45 AM
        Single-thread performance vs serial or scalar performanceTed R2022/06/21 08:08 PM
  ILP wall vs SIMD vs RLE2022/06/20 10:08 AM
    ILP wall vs SIMD vs RLEJan Wassenberg2022/06/20 10:55 AM
      ILP wall vs SIMD vs RLE2022/06/20 11:44 AM
        ILP wall vs SIMD vs RLEJan Wassenberg2022/06/20 09:48 PM
        ILP wall vs SIMD vs RLEdmcq2022/06/21 02:20 AM
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