Virtually indexed, untagged

Article: Knights Landing Details
By: Michael S (already5chosen.delete@this.yahoo.com), January 12, 2014 3:09 am
Room: Moderated Discussions
Nicolas Capens (nicolas.capens.delete@this.gmail.com) on January 11, 2014 9:45 pm wrote:
> Gabriele Svelto (gabriele.svelto.delete@this.gmail.com) on January 11, 2014 4:08 am wrote:
> > Nicolas Capens (nicolas.capens.delete@this.gmail.com) on January 10, 2014 11:27 am wrote:
> > > There is no address being computed. But I can agree on calling
> > > it a form of virtual indexing (VI) if you want.
> > > But since VIPT caches are high performance, it's really about
> > > the tagging, not the indexing. What you and David
> > > appear to be confused about is that this isn't a virtually
> > > tagged cache. There are no tags. The L0 would not
> > > contain any data that isn't in L1. The symbolic encoding of
> > > the address is only used for lookup, not for validation.
> >
> > On the one hand you mention that this would be done 'just as the LSU does' and on the other hand
> > you come up with tracking the contents of this cache only via instruction decoding, now let me ask
> > you: how would you do that across predicted branches? Interrupts? Exceptions? Multi-threading? Every
> > write to a register could invalidate your tags and if you generate them during decoding you need
> > first to bolt some of this logic to the decoders which already sounds crazy enough to me but then
> > you also need to keep track of whatever tags you generate in the ROB. You can't seriously think this
> > is simple. If this was done 'like the LSU' then you'd be using addresses and the logic would be limited
> > to within the LSU; what you're suggesting requires modifications all over the core.
>
> The decoder isn't involved at all. When a memory operand is needed, the encoding for it (the SIB byte
> and its extension bits) is sent to the LSU, which for an L1 access then reads the registers used by
> that symbolic address and computes the virtual address out of the contents of those registers. Then
> that virtual address is used for the actual L1 lookup, and it's also translated into a physical address
> along the way. Instead for the L0 cache I'm describing, there would be no translation from the symbolic
> address to the virtual address. The symbolic address is used to tag previously loaded data.
>
> Clearly the LSU readily has access to this symbolic address. Where you might
> be confused is that in many architectures the LSU doesn't take the symbolic
> address directly, but instead gets the virtual address from an AGU.
>
> So I hope this clears up for you that the instruction decoders are not involved at all, and
> branching doesn't affect it either. You just skip the virtual address calculation and go straight
> to the L0 cache to check if you've loaded that data before recently. If not, it becomes a regular
> L1 access. You may also start the L1 access in parallel and abort it on an L0 hit.

Do you realize that after you conceded that you also need the 2nd LSU (or at least LU) your continued insistence on symbolic address just makes no sense at all? Conventional virtually-tagged*
L0 cache will be better than you proposal from all points of view, including energy.

-------------
* - I don't say virtually-indexed, due to assumption of fully-associative cache topology that has no notion of index
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TopicPosted ByDate
Knights Landing details (new article)David Kanter2014/01/02 11:58 PM
  eDRAM as cacheiz2014/01/03 03:39 AM
    eDRAM optionsEric Bron2014/01/09 02:45 AM
  Knights Landing details (new article)Emil Briggs2014/01/03 05:06 AM
  Knights Landing details (new article)Michael S2014/01/03 06:05 AM
    PCI-E and QPIDavid Kanter2014/01/03 11:11 AM
  eDRAM still seems too expensive ...Mark Roulo2014/01/03 09:48 AM
    Nevermind ... I see that you addressed this :-)Mark Roulo2014/01/03 09:51 AM
    eDRAM still seems too expensive ...Eric Bron2014/01/03 12:42 PM
  eDRAM or stacked DRAM?Patrick Chase2014/01/03 10:21 AM
    eDRAM or stacked DRAM?Wes Felter2014/01/03 02:00 PM
      eDRAM or stacked DRAM?Patrick Chase2014/01/03 06:26 PM
        eDRAM or stacked DRAM?tarlinian2014/06/23 08:59 PM
          eDRAM or stacked DRAM?Maynard Handley2014/06/24 12:47 AM
            eDRAM or stacked DRAM?Michael S2014/06/24 02:13 AM
            eDRAM or stacked DRAM?David Kanter2014/06/24 11:09 AM
              eDRAM or stacked DRAM?anon2014/06/24 06:50 PM
                eDRAM or stacked DRAM?Eric Bron2014/06/24 09:02 PM
                  eDRAM or stacked DRAM?anon2014/06/24 09:39 PM
                eDRAM or stacked DRAM?Michael S2014/06/25 12:46 AM
              eDRAM or stacked DRAM?Michael S2014/06/25 12:29 AM
          eDRAM or stacked DRAM?Eric Bron2014/06/24 04:37 AM
            eDRAM or stacked DRAM?tarlinian2014/06/24 07:53 AM
              eDRAM or stacked DRAM?Eric Bron2014/06/24 08:09 AM
                eDRAM or stacked DRAM?tarlinian2014/06/24 08:40 AM
                  eDRAM or stacked DRAM?Eric Bron2014/06/24 09:10 AM
                    eDRAM or stacked DRAM?Eric Bron2014/06/24 09:12 AM
          eDRAM or stacked DRAM?Wes Felter2014/06/24 09:09 PM
            eDRAM or stacked DRAM?Michael S2014/06/25 01:02 AM
  Why not tag-inclusive L3?Paul A. Clayton2014/01/03 03:28 PM
    Why not tag-inclusive L3?Eric Bron2014/01/04 02:22 AM
  Knights Landing L/S bandwidthNicolas Capens2014/01/04 04:43 AM
    Knights Landing L/S bandwidthEric Bron2014/01/04 05:20 AM
      Knights Landing L/S bandwidthNicolas Capens2014/01/04 01:55 PM
        Knights Landing L/S bandwidthEric Bron2014/01/04 02:27 PM
          Knights Landing L/S bandwidthhobold2014/01/04 03:23 PM
            Knights Landing L/S bandwidthEric Bron2014/01/04 04:20 PM
              Knights Landing L/S bandwidthMichael S2014/01/05 02:42 AM
                Knights Landing L/S bandwidthEric Bron2014/01/05 02:49 AM
                  Knights Landing L/S bandwidthPatrick Chase2014/01/11 07:13 PM
                    Knights Landing L/S bandwidthNicolas Capens2014/01/13 07:39 PM
                Knights Landing L/S bandwidthNicolas Capens2014/01/05 02:18 PM
                  Knights Landing L/S bandwidthMichael S2014/01/06 03:09 AM
                    Knights Landing L/S bandwidthEric Bron2014/01/06 04:11 AM
                      Knights Landing L/S bandwidthMichael S2014/01/06 04:40 AM
                        Knights Landing L/S bandwidthEric Bron2014/01/06 04:54 AM
                        Knights Landing L/S bandwidthEric Bron2014/01/08 08:00 AM
                    Knights Landing L/S bandwidthNicolas Capens2014/01/07 02:31 PM
                      Knights Landing L/S bandwidthMichael S2014/01/07 03:17 PM
                        Knights Landing L/S bandwidthNicolas Capens2014/01/07 08:55 PM
                          Knights Landing L/S bandwidthMichael S2014/01/08 12:42 AM
                            Knights Landing L/S bandwidthGabriele Svelto2014/01/08 07:30 AM
                              Occam's razorNicolas Capens2014/01/08 01:33 PM
                                Occam's razorGabriele Svelto2014/01/08 01:51 PM
                                  Occam's razorEric Bron2014/01/08 02:28 PM
                                    Occam's razorbakaneko2014/01/09 03:45 AM
                                      Occam's razoranon2014/01/09 04:02 AM
                                        Occam's razorbakaneko2014/01/09 05:24 AM
                                          Occam's razorbakaneko2014/01/09 05:51 AM
                                            Occam's razoranon2014/01/09 06:18 AM
                                          Occam's razoranon2014/01/09 06:16 AM
                                            Occam's razorbakaneko2014/01/09 07:43 AM
                                              Occam's razoranon2014/01/09 08:17 AM
                                                Occam's razorbakaneko2014/01/09 10:12 AM
                                                  Occam's razorEric Bron2014/01/09 10:18 AM
                                                    Occam's razorbakaneko2014/01/09 10:58 AM
                                                  Occam's razoranon2014/01/09 11:35 AM
                                                    Occam's razorbakaneko2014/01/12 09:48 AM
                                                  99.9% not a new extensionNicolas Capens2014/01/10 10:39 AM
                                                    Compiler complexityGabriele Svelto2014/01/11 02:58 AM
                                                      Compiler complexityNicolas Capens2014/01/11 12:20 PM
                                                        Compiler complexityGabriele Svelto2014/01/11 02:17 PM
                                                          Patent pendingNicolas Capens2014/01/14 06:21 PM
                                                    99.9% not a new extensionbakaneko2014/01/12 10:08 AM
                                  L0 data cacheEric Bron2014/01/08 03:52 PM
                                  Occam's razorDavid Kanter2014/01/08 03:53 PM
                                    Occam's razorNicolas Capens2014/01/09 02:07 AM
                                      Occam's razorRicardo B2014/01/09 04:21 AM
                                        Virtually indexed, untaggedNicolas Capens2014/01/10 10:27 AM
                                          Virtually indexed, untaggedGabriele Svelto2014/01/11 03:08 AM
                                            Virtually indexed, untaggedNicolas Capens2014/01/11 08:45 PM
                                              Virtually indexed, untaggedDavid Kanter2014/01/12 01:13 AM
                                                Virtually indexed, untaggedanon2014/01/12 03:02 AM
                                                Virtually indexed, untaggedNicolas Capens2014/01/16 08:55 AM
                                              Virtually indexed, untaggedMichael S2014/01/12 03:09 AM
                                                Virtually indexed, untaggedNicolas Capens2014/01/16 09:47 AM
                                      Occam's razorDavid Kanter2014/01/09 05:42 PM
                                        Occam's razorNicolas Capens2014/01/10 01:22 PM
                                          Occam's razorDavid Kanter2014/01/10 03:06 PM
                                            MEM : ALU ratioNicolas Capens2014/01/10 11:24 PM
                                              MEM : ALU ratioGabriele Svelto2014/01/11 02:47 AM
                                                MEM : ALU ratioEric Bron2014/01/11 03:41 AM
                                                  MEM : ALU ratioEric Bron2014/01/11 04:06 AM
                                                    MEM : ALU ratioDavid Kanter2014/01/11 07:28 PM
                                                      MEM : ALU ratioEric Bron nli2014/01/12 01:54 AM
                                                  MEM : ALU ratioGabriele Svelto2014/01/11 09:15 AM
                                                MEM : ALU ratioNicolas Capens2014/01/14 05:56 PM
                                                  Etiquette in linking to papersPaul A. Clayton2014/01/14 06:44 PM
                                                  MEM : ALU ratioanon2014/01/14 07:32 PM
                                                    L0 power costNicolas Capens2014/01/16 01:05 PM
                                                      L0 power costanon2014/01/16 09:01 PM
                                                        L0 power costNicolas Capens2014/01/18 11:30 PM
                                                          Links revealedPaul A. Clayton2014/01/19 03:47 PM
                                                          L0 power costanon2014/01/20 12:19 AM
                                                            L0 power costNicolas Capens2014/01/20 01:49 PM
                                                              L0 power costanon2014/01/21 12:18 AM
                                                                Q.E.D.Nicolas Capens2014/01/21 07:44 PM
                                                                  Q.E.D.anon2014/01/21 08:24 PM
                                                                    Straw manNicolas Capens2014/01/23 10:56 PM
                                                                      Straw mananon2014/01/25 05:46 AM
                                                                        Still waiting for an explanationNicolas Capens2014/01/25 11:19 PM
                                                                          Still waiting for an explanationExophase2014/01/26 12:13 PM
                                                                            Still waiting for an explanationbakaneko2014/01/26 10:52 PM
                                                                  Q.E.D.Ricardo B2014/01/22 05:58 PM
                                                                    Q.E.D.Michael S2014/01/23 03:59 AM
                                                                      L0 entry countNicolas Capens2014/01/24 12:11 AM
                                                                        L0 entry countEric Bron2014/01/24 01:08 AM
                                                                          L0 entry countMichael S2014/01/24 05:18 AM
                                                                            L0 entry countEric Bron2014/01/24 06:15 AM
                                                                              L0 entry countMichael S2014/01/24 07:10 AM
                                                                                L0 entry countEric Bron2014/01/24 07:20 AM
                                                                          L0 entry countNicolas Capens2014/01/24 01:33 PM
                                                                            L0 entry countEric Bron2014/01/24 02:20 PM
                                                                              L0 entry count and L1 read port orthogonalityNicolas Capens2014/01/26 12:14 AM
                                                                                L0 entry count and L1 read port orthogonalityEric Bron2014/01/26 02:49 AM
                                                                    L0 hit rateNicolas Capens2014/01/23 11:49 PM
                                                                      L0 hit rateRicardo B2014/01/24 05:42 AM
                                                                        L0 hit rateExophase2014/01/24 12:37 PM
                                                                          L0 hit rateEric Bron2014/01/24 01:12 PM
                                                                        L0 vs RF powerNicolas Capens2014/01/24 01:43 PM
                                              MEM : ALU ratioDavid Kanter2014/01/11 12:47 PM
                                                MEM : ALU ratioNicolas Capens2014/01/16 08:23 AM
                                                  MEM : ALU ratioStubabe2014/01/17 11:58 AM
                                                    MEM : ALU ratioStubabe2014/01/17 12:42 PM
                                                      MEM : ALU ratioMichael S2014/01/18 03:57 PM
                                                        MEM : ALU ratiobakaneko2014/01/18 11:47 PM
                                                    MEM : ALU ratioNicolas Capens2014/01/20 02:48 PM
                                                      It's called "tunnel vision" (NT)iz2014/01/20 03:36 PM
                                                      MEM : ALU ratioMichael S2014/01/20 03:37 PM
                                                        MEM : ALU ratioStubabe2014/01/21 03:54 PM
                                                        MEM : ALU ratioNicolas Capens2014/01/21 09:07 PM
                                                          MEM : ALU ratioMichael S2014/01/22 07:17 AM
                                                            MEM : ALU ratioNicolas Capens2014/01/24 02:33 PM
                                                      MEM : ALU ratioStubabe2014/01/21 03:32 PM
                                                        MEM : ALU ratioMichael S2014/01/22 07:56 AM
                                                          MEM : ALU ratioStubabe2014/01/23 08:06 AM
                                                            MEM : ALU ratioEric Bron2014/01/23 08:45 AM
                                                              editEric Bron2014/01/23 08:49 AM
                                                            MEM : ALU ratioMichael S2014/01/23 08:58 AM
                                                              MEM : ALU ratioEric Bron2014/01/23 09:29 AM
                                                                MEM : ALU ratioMichael S2014/01/23 09:33 AM
                                                              MEM : ALU ratioStubabe2014/01/24 03:50 AM
                                                MEM : ALU ratiobakaneko2014/01/23 09:36 AM
                                              MEM : ALU ratioNoSpammer2014/01/11 02:39 PM
                                                L1 vs L0 access costNicolas Capens2014/01/16 02:17 PM
                                                  L1 vs L0 access costNoSpammer2014/01/19 12:48 PM
                                                    L1 vs L0 access costdmcq2014/01/22 04:45 AM
                                                      L1 vs L0 access costGabriele Svelto2014/01/22 06:29 AM
                                                        L1 vs L0 access costdmcq2014/01/22 12:33 PM
                                                          L1 vs L0 access costGabriele Svelto2014/01/22 03:33 PM
                                                            L1 vs L0 access costdmcq2014/01/24 03:19 AM
                                                    L1 vs L0 access costNicolas Capens2014/01/24 01:16 AM
                                      Occam's razorPatrick Chase2014/01/13 10:19 AM
                                  Occam's razorNicolas Capens2014/01/08 11:40 PM
                                    Occam's razorGabriele Svelto2014/01/09 01:41 AM
                                      Occam's razorEric Bron2014/01/09 01:54 AM
                                        Occam's razorGabriele Svelto2014/01/09 05:35 AM
                                          Occam's razorEric Bron2014/01/09 06:14 AM
                                            avoiding redundant loadsEric Bron2014/01/09 06:18 AM
                                            AVX2 versionEric Bron2014/01/09 06:32 AM
                                      Occam's razorAmiba Gelos2014/01/09 02:01 AM
                                        Occam's razorEric Bron2014/01/09 02:06 AM
                                          Occam's razorAmiba Gelos2014/01/09 02:43 AM
                                            Occam's razorEric Bron2014/01/09 03:02 AM
                                        L0 access latencyNicolas Capens2014/01/09 03:27 AM
                                          L0 access latencyAmiba Gelos2014/01/09 04:16 AM
                                            compared to L0$ i would say banking is far more likely (NT)Amiba Gelos2014/01/09 04:20 AM
                                            L0 access latencyNicolas Capens2014/01/10 02:20 PM
                                      Occam's razorNicolas Capens2014/01/09 03:19 AM
                                    Occam's razorNoSpammer2014/01/09 11:55 AM
                                      Occam's razorNicolas Capens2014/01/10 02:40 PM
                                        Occam's razorMichael S2014/01/11 09:21 AM
                                        Occam's razorMichael S2014/01/12 02:21 PM
                                          KNC compiler outputNicolas Capens2014/01/16 05:39 PM
                                            KNC compiler outputMichael S2014/01/18 04:13 PM
                                    L0 cache coherencyDavid Kanter2014/01/11 07:39 PM
                                Occam's razoranon2014/01/09 04:12 AM
                            Knights Landing L/S bandwidthEric Bron2014/01/08 09:46 AM
                              Knights Landing L/S bandwidthMichael S2014/01/08 10:23 AM
                            Knights Landing L/S bandwidthNicolas Capens2014/01/08 01:02 PM
                              Knights Landing L/S bandwidthMichael S2014/01/08 01:29 PM
                                Knights Landing L/S bandwidthEric Bron2014/01/08 01:54 PM
                                  Knights Landing L/S bandwidthMichael S2014/01/08 02:00 PM
                                    Knights Landing L/S bandwidthEric Bron2014/01/08 02:13 PM
                                      Knights Landing L/S bandwidthMichael S2014/01/08 02:28 PM
                                        Knights Landing L/S bandwidthEric Bron2014/01/08 02:32 PM
                                          Knights Landing L/S bandwidthMichael S2014/01/08 02:40 PM
                                            Knights Landing L/S bandwidthEric Bron2014/01/08 02:51 PM
                                              Knights Landing L/S bandwidthMichael S2014/01/09 11:18 AM
                          Knights Landing L/S bandwidthPatrick Chase2014/01/12 09:03 PM
                            Also page/line splits?David Kanter2014/01/12 09:50 PM
                              Also page/line splits?anon2014/01/13 12:44 AM
                                Also page/line splits?none2014/01/13 02:09 AM
                                  Also page/line splits?anon2014/01/13 03:19 AM
                            Knights Landing L/S bandwidthExophase2014/01/12 11:15 PM
                            Knights Landing L/S bandwidthanon2014/01/13 12:41 AM
                              Knights Landing L/S bandwidthPatrick Chase2014/01/13 10:14 AM
                            Aliased writesNicolas Capens2014/01/14 08:46 PM
                      Knights Landing L/S bandwidthRicardo B2014/01/07 03:27 PM
                        Knights Landing L/S bandwidthNicolas Capens2014/01/07 09:28 PM
                          Knights Landing L/S bandwidthRicardo B2014/01/08 01:13 AM
                            Knights Landing L/S bandwidthEric Bron2014/01/08 10:10 AM
                            Knights Landing L/S bandwidthNicolas Capens2014/01/08 02:31 PM
                              Knights Landing L/S bandwidthRicardo B2014/01/08 02:58 PM
                                Knights Landing L/S bandwidthG. Gouvine2014/01/09 08:10 AM
                                  Knights Landing L/S bandwidthRicardo B2014/01/09 10:19 AM
                                    Efficient load queue vs. efficient L0 cacheNicolas Capens2014/01/11 11:28 AM
                                      Efficient load queue vs. efficient L0 cacheG. Gouvine2014/01/13 01:11 AM
                                        Efficient load queue vs. efficient L0 cacheMichael S2014/01/13 02:43 AM
                                Register file read port requirementsNicolas Capens2014/01/10 11:55 PM
                                  Register file read port requirementsRicardo B2014/01/11 04:24 AM
                                    Register file read port requirementsEric Bron2014/01/11 04:32 AM
                                      Register file read port requirementsMichael S2014/01/11 08:57 AM
                                        Register file read port requirementsEric Bron2014/01/11 10:16 AM
                                          Register file read port requirementsMichael S2014/01/11 10:46 AM
                                            Register file read port requirementsEric Bron2014/01/11 11:12 AM
                                              Register file read port requirementsMichael S2014/01/11 11:36 AM
                                                Register file read port requirementsEric Bron2014/01/11 11:51 AM
                                              Register file read port requirementsPatrick Chase2014/01/13 01:27 PM
                                                Register file read port requirementsEric Bron2014/01/13 03:24 PM
                                                  Register file read port requirementsPatrick Chase2014/01/13 05:02 PM
                                                    Register file read port requirementsEric Bron2014/01/14 03:50 AM
                                                      Register file read port requirementsMichael S2014/01/14 10:36 AM
                                                        Register file read port requirementsEric Bron nli2014/01/14 12:04 PM
                                            Register file read port requirementsPatrick Chase2014/01/13 01:17 PM
                                              Register file read port requirementsMichael S2014/01/15 03:27 AM
                                        Register file read port requirementsEric Bron2014/01/11 10:28 AM
                                          Register file read port requirementsMichael S2014/01/11 11:07 AM
                                            Register file read port requirementsPatrick Chase2014/01/13 01:40 PM
                                          Register file read port requirementsPatrick Chase2014/01/13 01:34 PM
                                      Register file read port requirementsRicardo B2014/01/11 11:55 AM
                                        Register file read port requirementsEric Bron2014/01/11 12:17 PM
                                          Register file read port requirementsRicardo B2014/01/11 01:36 PM
                                            Register file read port requirementsEric Bron2014/01/11 01:42 PM
                                              Register file read port requirementsRicardo B2014/01/11 02:20 PM
                                                Register file read port requirementsEric Bron2014/01/11 02:26 PM
                                                  Register file read port requirementsMichael S2014/01/11 03:07 PM
                                                    Register file read port requirementsRicardo B2014/01/11 03:38 PM
                                                      Register file read port requirementsMichael S2014/01/11 03:49 PM
                                                Register file read port requirementsEric Bron2014/01/11 02:39 PM
                                                  Register file read port requirementsEric Bron2014/01/11 02:41 PM
                                                  Register file read port requirementsRicardo B2014/01/11 03:30 PM
                                    Register file read port requirementsNicolas Capens2014/01/11 11:09 AM
              Knights Landing L/S bandwidthanon2014/01/05 05:55 AM
                Knights Landing L/S bandwidthEric Bron2014/01/05 06:30 AM
                  Knights Landing L/S bandwidthanon2014/01/06 12:07 AM
                    Knights Landing L/S bandwidthEric Bron2014/01/06 01:38 AM
                      Knights Landing L/S bandwidthanon2014/01/06 03:01 AM
                        Knights Landing L/S bandwidthEric Bron2014/01/06 03:44 AM
                          Knights Landing L/S bandwidthanon2014/01/06 04:39 AM
                            Knights Landing L/S bandwidthEric Bron2014/01/06 05:00 AM
                              Knights Landing L/S bandwidthanon2014/01/06 05:44 AM
                                Knights Landing L/S bandwidthMichael S2014/01/06 07:54 AM
                                  Knights Landing L/S bandwidthEric Bron2014/01/06 09:11 AM
                                    Knights Landing L/S bandwidthMichael S2014/01/06 09:14 AM
                                      Knights Landing L/S bandwidthEric Bron2014/01/06 10:37 AM
                                        Knights Landing L/S bandwidthRicardo B2014/01/08 05:25 AM
                                          Knights Landing L/S bandwidthEric Bron2014/01/08 07:36 AM
                                            Knights Landing L/S bandwidthEric Bron2014/01/08 07:41 AM
                                            KNC code generator with EVEX back-end?Michael S2014/01/08 08:43 AM
                                              KNC code generator with EVEX back-end?Exophase2014/01/08 09:00 AM
                                                KNC code generator with EVEX back-end?Ricardo B2014/01/08 10:39 AM
                                                  KNC code generator with EVEX back-end?Eric Bron2014/01/08 11:15 AM
                                                    KNC code generator with EVEX back-end?Exophase2014/01/08 12:17 PM
                                                      KNC code generator with EVEX back-end?Ricardo B2014/01/08 01:06 PM
                                                        KNC code generator with EVEX back-end?Exophase2014/01/08 01:24 PM
                                                        KNC code generator with EVEX back-end?Eric Bron2014/01/08 01:38 PM
                                                    KNC code generator with EVEX back-end?Michael S2014/01/08 12:54 PM
                                              KNC code generator with EVEX back-end?Eric Bron2014/01/08 09:25 AM
                                              KNC code generator with EVEX back-end?Eric Bron2014/01/08 09:35 AM
                                                KNC code generator with EVEX back-end?Michael S2014/01/08 10:07 AM
                                                  KNC code generator with EVEX back-end?Eric Bron2014/01/08 10:24 AM
                                                    KNC code generator with EVEX back-end?Michael S2014/01/08 10:43 AM
                                                      KNC code generator with EVEX back-end?Eric Bron2014/01/08 12:23 PM
                                              KNC code generator with EVEX back-end?Eric Bron2014/01/08 09:43 AM
                                          AVX2 code much different than AVX-512Eric Bron2014/01/08 07:52 AM
                                            evil questionhobold2014/01/08 09:22 AM
                                              evil questionEric Bron2014/01/08 09:27 AM
                                                evil questionhobold2014/01/08 01:33 PM
                                                  evil questionMichael S2014/01/08 01:37 PM
                                                    stupid question (was: evil question)hobold2014/01/09 04:41 AM
                                                      stupid question (was: evil question)Eric Bron2014/01/09 04:52 AM
                                                        stupid question (was: evil question)Michael S2014/01/09 07:00 AM
                                                          stupid question (was: evil question)Michael S2014/01/09 07:12 AM
                                                            stupid question (was: evil question)Eric Bron2014/01/09 09:47 AM
                                                              stupid question (was: evil question)Michael S2014/01/09 10:48 AM
                                                                more decisive (hopefully) test caseMichael S2014/01/09 11:01 AM
                                                                  more decisive (hopefully) test caseEric Bron2014/01/09 11:08 AM
                                                                    more decisive (hopefully) test caseMichael S2014/01/09 11:24 AM
                                                                      more decisive (hopefully) test caseEric Bron2014/01/09 11:27 AM
                                                                        more decisive (hopefully) test caseMichael S2014/01/09 11:33 AM
                                                                  AVX2Eric Bron2014/01/09 11:14 AM
                                                                    AVX2Michael S2014/01/09 11:30 AM
                                                                      AVX2Eric Bron2014/01/09 11:40 AM
                                                                  another tryMichael S2014/01/09 02:02 PM
                                                                    another tryEric Bron2014/01/09 02:33 PM
                                                                      another tryMichael S2014/01/09 03:20 PM
                                                                      another try - ignore misformated mess aboveMichael S2014/01/09 03:24 PM
                                                                        another try - ignore misformated mess aboveGabriele Svelto2014/01/10 12:01 AM
                                                                          another try - ignore misformated mess aboveEric Bron2014/01/10 02:05 AM
                                                                            another try - ignore misformated mess aboveMichael S2014/01/11 09:23 AM
                                                                              another try - ignore misformated mess aboveEric Bron2014/01/11 10:08 AM
                                                                                another try - ignore misformated mess aboveMichael S2014/01/11 11:09 AM
                                                                                  another try - ignore misformated mess aboveMichael S2014/01/11 11:12 AM
                                                                                    another try - ignore misformated mess aboveEric Bron2014/01/11 11:24 AM
                                                                                      another try - ignore misformated mess aboveMichael S2014/01/11 12:24 PM
                                                                                        another try - ignore misformated mess aboveEric Bron2014/01/11 01:11 PM
                                                                                          another try - ignore misformated mess aboveMichael S2014/01/11 01:18 PM
                                                                                            another try - ignore misformated mess aboveEric Bron2014/01/11 01:27 PM
                                                                                              another try - ignore misformated mess aboveMichael S2014/01/11 01:29 PM
                                                                                                another try - ignore misformated mess aboveEric Bron2014/01/11 01:46 PM
                                                                                                  another try - ignore misformated mess aboveEric Bron2014/01/11 01:46 PM
                                                                                                  another try - ignore misformated mess aboveMichael S2014/01/11 02:28 PM
                                                                                        another try - ignore misformated mess aboveEric Bron2014/01/11 01:17 PM
                                                                                          another try - ignore misformated mess aboveMichael S2014/01/11 01:24 PM
                                                                    KNC versionMichael S2014/01/11 04:19 PM
                                                                      KNC versionEric Bron nli2014/01/12 01:59 AM
                                                                        KNC versionGabriele Svelto2014/01/12 08:06 AM
                                                  evil questionEric Bron2014/01/08 01:41 PM
              Knights Landing L/S bandwidthPatrick Chase2014/01/05 10:20 PM
                Knights Landing L/S bandwidthEric Bron2014/01/06 01:45 AM
                  Knights Landing L/S bandwidthanon2014/01/06 03:12 AM
                    Knights Landing L/S bandwidthMichael S2014/01/06 03:17 AM
                      Knights Landing L/S bandwidthanon2014/01/06 04:20 AM
          Knights Landing L/S bandwidthNicolas Capens2014/01/04 04:34 PM
            Knights Landing L/S bandwidthEric Bron2014/01/04 04:44 PM
              Knights Landing L/S bandwidthNicolas Capens2014/01/05 11:25 AM
                Knights Landing L/S bandwidthEric Bron2014/01/05 12:50 PM
                  Knights Landing L/S bandwidthNicolas Capens2014/01/05 02:34 PM
                    Might even help with gatherNicolas Capens2014/01/05 02:40 PM
                      What is an L0 cache?David Kanter2014/01/05 09:44 PM
                        What is an L0 cache?anon2014/01/06 04:57 AM
                          What is an L0 cache?Nicolas Capens2014/01/06 11:57 AM
                            What is an L0 cache?anon2014/01/06 01:18 PM
    Knights Landing L/S bandwidthDavid Kanter2014/01/04 09:58 AM
      Knights Landing L/S bandwidthNicolas Capens2014/01/04 03:24 PM
        Knights Landing L/S bandwidthEric Bron2014/01/04 03:46 PM
          Knights Landing L/S bandwidthKonrad Schwarz2014/01/07 11:48 PM
            Knights Landing L/S bandwidthMichael S2014/01/08 01:45 AM
        Knights Landing L/S bandwidthDavid Kanter2014/01/05 12:44 AM
          Knights Landing L/S bandwidthEric Bron2014/01/05 02:55 AM
          Knights Landing L/S bandwidthNicolas Capens2014/01/05 11:18 AM
            Knights Landing L/S bandwidthMaynard Handley2014/01/05 10:33 PM
              Knights Landing L/S bandwidthEric Bron2014/01/06 03:02 AM
                Knights Landing L/S bandwidthMichael S2014/01/06 03:23 AM
                  Knights Landing L/S bandwidthEric Bron2014/01/06 03:35 AM
                    Knights Landing L/S bandwidthMichael S2014/01/06 04:20 AM
                      Knights Landing L/S bandwidthMichael S2014/01/06 04:32 AM
                      Knights Landing L/S bandwidthEric Bron2014/01/06 04:36 AM
                        Knights Landing L/S bandwidthMichael S2014/01/06 05:00 AM
                          Knights Landing L/S bandwidthEric Bron2014/01/06 05:07 AM
                          Knights Landing L/S bandwidthEric Bron2014/01/06 05:14 AM
                            editsEric Bron2014/01/06 05:22 AM
                              optimized versionEric Bron2014/01/06 05:35 AM
                                yet more optimized versionEric Bron2014/01/06 05:42 AM
                                  latest version for todayEric Bron2014/01/06 05:51 AM
                                    Probably just L2 bandwith limitedNicolas Capens2014/01/06 10:48 AM
                                  yet more optimized versionMaynard Handley2014/01/06 05:54 PM
                                optimized versionMaynard Handley2014/01/06 05:52 PM
                                  optimized versionMichael S2014/01/07 09:42 AM
                                    optimized versionNicolas Capens2014/01/07 11:36 AM
                                      optimized versionMichael S2014/01/07 02:41 PM
                                        optimized versionNicolas Capens2014/01/07 09:52 PM
                                          optimized versionMichael S2014/01/08 01:10 AM
                                    optimized versionEric Bron2014/01/07 01:34 PM
                                      optimized versionMichael S2014/01/07 02:18 PM
                                        optimized versionEric Bron2014/01/07 02:30 PM
                                          optimized versionEric Bron2014/01/07 02:33 PM
                                            optimized versionMichael S2014/01/07 02:57 PM
                                    optimized versionMaynard Handley2014/01/07 05:50 PM
                                      optimized versionMichael S2014/01/08 01:39 AM
                Knights Landing L/S bandwidthMaynard Handley2014/01/06 05:47 PM
              Knights Landing L/S bandwidthNicolas Capens2014/01/06 08:18 AM
                Knights Landing L/S bandwidthMaynard Handley2014/01/06 05:56 PM
                  Knights Landing L/S bandwidthNicolas Capens2014/01/07 11:18 AM
        Knights Landing L/S bandwidthNoSpammer2014/01/05 12:15 PM
          Knights Landing L/S bandwidthNicolas Capens2014/01/05 02:06 PM
            Knights Landing L/S bandwidthNoSpammer2014/01/06 03:20 AM
              Knights Landing L/S bandwidthNicolas Capens2014/01/06 10:54 AM
                Knights Landing L/S bandwidthNoSpammer2014/01/06 12:24 PM
                  Knights Landing L/S bandwidthNicolas Capens2014/01/06 08:15 PM
                    Knights Landing L/S bandwidthNoSpammer2014/01/07 02:58 AM
                      Knights Landing L/S bandwidthNicolas Capens2014/01/07 02:18 PM
                        Knights Landing L/S bandwidthNoSpammer2014/01/08 12:38 PM
                          Knights Landing L/S bandwidthNicolas Capens2014/01/08 10:14 PM
  AVX512F questionMichael S2014/01/06 09:18 AM
    AVX512F questionNicolas Capens2014/01/06 11:01 AM
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How do you spell green?