128 bit floats

Article: Intel's Sandy Bridge Microarchitecture
By: Michael S (already5chosen.delete@this.yahoo.com), January 8, 2011 2:10 pm
Room: Moderated Discussions
Brett (ggtgp@yahoo.com) on 1/8/11 wrote:
---------------------------
>Michael S (already5chosen@yahoo.com) on 1/8/11 wrote:
>---------------------------
>>The thing I really miss in Intel's fix-point
>>SIMD relatively to "real" DSP processors
>>is extended accumulators. It was easy to do
>>back in original MMX days when 64-bits
>>MMX registers were sitting on top of 80-bit
>>x87 registers, but it was never done
>>back then. Now everything is power-of-two
>>and although i still would like extended-precision
>>accumulators I don't see much chances for them.
>
>I think POWER has some support for 128 bit floats.
>

You confuses zArch with Power.

But when I am talking about extended precision for signal processing I never mean 128 bit. Quite an opposite - for majority of signal-processing application 52-bit mantissa of double-precision IEEE format is an overkill and many people don't like the idea of sacrificing half of their throughput and some latency for that unneeded precision. On the other hand, 23-bit mantissa of single-precision IEEE is typically sufficient for inputs and results, but sometimes insufficient for intermediates. 40-bit (1+8+31) registers with fast 32-bit loads/store plus ability to load/store full 40-bit at cost of some overhead was traditionally considered a good compromise by digital signal processing vendor and community.

In context of fix-point processing, 64-bit accumulators are typically overkill while 32-bit is often insufficient and leads to complications in implementation of most important algorithms with optimal precision. 40 or 48-bit accumulators solve the problem nicely, although, at cost of not too bad complication in software you can achieve the same precision and almost the same throughput with combination of 36-bit accumulators in the inner loop and 64-bit in the outer loop.

I am less experienced with fix-point image processing (despite being there once a decade ago), but expect that it faces the same trade-offs at twice smaller scale. I.e. 32-bit accumulator = overkill, 16-bit accumulator = insufficient.

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                                                Displayrcf2010/10/03 01:12 PM
                                                  Displaympx2010/10/03 02:36 PM
                                                    Displayrcf2010/10/03 05:36 PM
                                                      DisplayRicardo B2010/10/04 02:50 PM
                                                        Displaygallier22010/10/05 03:44 AM
                                                          DisplayDavid Hess2010/10/05 05:21 AM
                                                            Displaygallier22010/10/05 08:21 AM
                                                  DisplayDavid Hess2010/10/03 11:21 PM
                                                    Displayrcf2010/10/04 08:06 AM
                                                DisplayDavid Kanter2010/10/03 01:54 PM
                                                  Alternative integrationPaul A. Clayton2010/10/06 08:51 AM
                                              Displayslacker2010/10/03 07:26 PM
                                              Display & marketing & analogies?2010/10/04 02:33 AM
                                                Display & marketing & analogieskdg2010/10/04 06:00 AM
                                      DisplayKevin G2010/10/02 09:49 AM
                                        DisplayAnon2010/10/03 03:43 PM
                        Sandy Bridge CPU article onlineDavid Kanter2010/09/29 03:17 PM
        Sandy Bridge CPU article onlineJack2010/09/28 06:27 AM
    Sandy Bridge CPU article onlineIntelUser20002010/09/28 03:07 AM
      Sandy Bridge CPU article onlinempx2010/09/28 12:34 PM
        Sandy Bridge CPU article onlineAaron Spink2010/09/28 01:28 PM
          Sandy Bridge CPU article onlineJoshW2010/09/28 02:13 PM
          Sandy Bridge CPU article onlinempx2010/09/28 02:54 PM
        Sandy Bridge CPU article onlineFoo_2010/09/29 01:19 AM
          Sandy Bridge CPU article onlinempx2010/09/29 03:06 AM
            Sandy Bridge CPU article onlineJS2010/09/29 03:42 AM
              Sandy Bridge CPU article onlinempx2010/09/29 04:03 AM
            Sandy Bridge CPU article onlineFoo_2010/09/29 05:55 AM
  Sandy Bridge CPU article onlineajensen2010/09/28 12:19 AM
    Sandy Bridge CPU article onlineIan Ollmann2010/09/28 04:52 PM
      Sandy Bridge CPU article onlinea reader2010/09/28 05:05 PM
      Sandy Bridge CPU article onlineajensen2010/09/28 11:35 PM
  Updated: Sandy Bridge CPU articleDavid Kanter2010/10/01 05:11 AM
    Updated: Sandy Bridge CPU articleanon2011/01/07 09:55 PM
      Updated: Sandy Bridge CPU articleEric Bron2011/01/08 03:29 AM
        Updated: Sandy Bridge CPU articleanon2011/01/11 11:24 PM
          Updated: Sandy Bridge CPU articleanon2011/01/15 11:21 AM
            David Kanter can you shed some light? Re Updated: Sandy Bridge CPU articleanon2011/01/16 11:22 PM
              David Kanter can you shed some light? Re Updated: Sandy Bridge CPU articleanonymous2011/01/17 02:04 AM
                David Kanter can you shed some light? Re Updated: Sandy Bridge CPU articleanon2011/01/17 07:12 AM
                  I can try....David Kanter2011/01/18 03:54 PM
                    I can try....anon2011/01/18 08:07 PM
                      I can try....David Kanter2011/01/18 11:24 PM
                        I can try....anon2011/01/19 07:51 AM
                          Wider fetch than execute makes sensePaul A. Clayton2011/01/19 08:53 AM
  Sandy Bridge CPU article onlineNicolas Capens2011/01/04 07:29 AM
    Sandy Bridge CPU article onlineSeni2011/01/04 09:07 PM
      Sandy Bridge CPU article onlinehobold2011/01/04 11:26 PM
        Sandy Bridge CPU article onlineMichael S2011/01/05 02:01 AM
          software assist exceptionshobold2011/01/05 04:36 PM
      Sandy Bridge CPU article onlineMichael S2011/01/05 01:58 AM
        Sandy Bridge CPU article onlineanon2011/01/05 04:51 AM
          Sandy Bridge CPU article onlineSeni2011/01/05 08:53 AM
            Sandy Bridge CPU article onlineMichael S2011/01/05 09:03 AM
              Sandy Bridge CPU article onlineanon2011/01/05 04:14 PM
      Sandy Bridge CPU article onlineNicolas Capens2011/01/05 04:50 AM
        Sandy Bridge CPU article onlineGabriele Svelto2011/01/05 05:00 AM
          Sandy Bridge CPU article onlineNicolas Capens2011/01/05 07:26 AM
            Sandy Bridge CPU article onlineGabriele Svelto2011/01/05 07:50 AM
              Sandy Bridge CPU article onlineMichael S2011/01/05 08:39 AM
              Sandy Bridge CPU article onlineNicolas Capens2011/01/05 03:50 PM
                permuting vector elementshobold2011/01/05 05:03 PM
                  permuting vector elementsNicolas Capens2011/01/05 06:01 PM
                  permuting vector elementsNicolas Capens2011/01/06 08:27 AM
                Sandy Bridge CPU article onlineGabriele Svelto2011/01/11 11:33 AM
                  Sandy Bridge CPU article onlineEduardoS2011/01/11 01:51 PM
                  Sandy Bridge CPU article onlinehobold2011/01/11 02:11 PM
                    Sandy Bridge CPU article onlineDavid Kanter2011/01/11 06:07 PM
                      Sandy Bridge CPU article onlineMichael S2011/01/12 03:25 AM
                        Sandy Bridge CPU article onlinehobold2011/01/12 05:03 PM
                          Sandy Bridge CPU article onlineDavid Kanter2011/01/12 11:27 PM
                            Sandy Bridge CPU article onlineEric Bron2011/01/13 02:38 AM
                            Sandy Bridge CPU article onlineMichael S2011/01/13 03:32 AM
                              Sandy Bridge CPU article onlinehobold2011/01/13 01:53 PM
                            What happened to VPERMIL2PS?Michael S2011/01/13 03:46 AM
                              What happened to VPERMIL2PS?Eric Bron2011/01/13 06:46 AM
                          Lower cost permutePaul A. Clayton2011/01/13 12:11 PM
                          Sandy Bridge CPU article onlineanon2011/01/25 06:31 PM
                  Sandy Bridge CPU article onlineNicolas Capens2011/01/12 06:34 PM
                    Sandy Bridge CPU article onlineGabriele Svelto2011/01/13 07:38 AM
                      Sandy Bridge CPU article onlineNicolas Capens2011/01/15 09:47 PM
                        Sandy Bridge CPU article onlineGabriele Svelto2011/01/16 03:13 AM
                        And just to make a further exampleGabriele Svelto2011/01/16 04:24 AM
                        Sandy Bridge CPU article onlinempx2011/01/16 01:27 PM
                      Sandy Bridge CPU article onlineNicolas Capens2011/01/25 02:56 PM
                        Sandy Bridge CPU article onlineDavid Kanter2011/01/25 04:11 PM
                          Sandy Bridge CPU article onlineNicolas Capens2011/01/26 08:49 AM
                            Sandy Bridge CPU article onlineEduardoS2011/01/26 04:35 PM
                              Sandy Bridge CPU article onlineNicolas Capens2011/01/27 02:51 AM
                                Sandy Bridge CPU article onlineEduardoS2011/01/27 02:40 PM
                                  Sandy Bridge CPU article onlineNicolas Capens2011/01/28 03:24 AM
                                    Sandy Bridge CPU article onlineEric Bron2011/01/28 03:49 AM
                                      Sandy Bridge CPU article onlineNicolas Capens2011/01/30 02:11 PM
                                        Sandy Bridge CPU article onlineEric Bron2011/01/31 03:43 AM
                                          Sandy Bridge CPU article onlineNicolas Capens2011/02/01 04:02 AM
                                            Sandy Bridge CPU article onlineEric Bron2011/02/01 04:28 AM
                                            Sandy Bridge CPU article onlineEric Bron2011/02/01 04:43 AM
                                    Sandy Bridge CPU article onlineEduardoS2011/01/28 07:14 PM
                                      Sandy Bridge CPU article onlineNicolas Capens2011/02/01 02:58 AM
                                        Sandy Bridge CPU article onlineEduardoS2011/02/01 02:36 PM
                                          Sandy Bridge CPU article onlineanon2011/02/01 04:56 PM
                                            Sandy Bridge CPU article onlineEduardoS2011/02/01 09:17 PM
                                              Sandy Bridge CPU article onlineanon2011/02/01 10:13 PM
                                              Sandy Bridge CPU article onlineEric Bron2011/02/02 04:08 AM
                                              Sandy Bridge CPU article onlineEric Bron2011/02/02 04:26 AM
                                Sandy Bridge CPU article onlinekalmaegi2011/02/01 09:29 AM
                            SW RasterizationDavid Kanter2011/01/27 05:18 PM
                              Lower pin count memoryiz2011/01/27 09:19 PM
                                Lower pin count memoryDavid Kanter2011/01/27 09:25 PM
                                  Lower pin count memoryiz2011/01/27 11:31 PM
                                    Lower pin count memoryDavid Kanter2011/01/27 11:52 PM
                                      Lower pin count memoryiz2011/01/28 12:28 AM
                                        Lower pin count memoryDavid Kanter2011/01/28 01:05 AM
                                          Lower pin count memoryiz2011/01/28 03:55 AM
                                            Lower pin count memoryDavid Hess2011/01/28 01:15 PM
                                            Lower pin count memoryDavid Kanter2011/01/28 01:57 PM
                                              Lower pin count memoryiz2011/01/28 05:20 PM
                                      Two years laterForgotPants2013/10/26 11:33 AM
                                        Two years lateranon2013/10/26 11:36 AM
                                        Two years laterExophase2013/10/26 12:56 PM
                                        Two years laterDavid Hess2013/10/26 05:05 PM
                                        Herz is totally the thing you DON*T care.Jouni Osmala2013/10/27 01:48 AM
                                          Herz is totally the thing you DON*T care.EduardoS2013/10/27 07:00 AM
                                            Herz is totally the thing you DON*T care.Michael S2013/10/27 07:45 AM
                                        Two years latersomeone2013/10/28 07:21 AM
                                  Lower pin count memoryMartin Høyer Kristiansen2011/01/28 01:41 AM
                                    Lower pin count memoryiz2011/01/28 03:07 AM
                                Lower pin count memoryDarrell Coker2011/01/27 10:39 PM
                                  Lower pin count memoryiz2011/01/28 12:20 AM
                                    Lower pin count memoryDarrell Coker2011/01/28 06:07 PM
                                      Lower pin count memoryiz2011/01/28 11:57 PM
                                        Lower pin count memoryDarrell Coker2011/01/29 02:21 AM
                                          Lower pin count memoryiz2011/01/31 10:28 PM
                              SW RasterizationNicolas Capens2011/02/02 08:48 AM
                                SW RasterizationEric Bron2011/02/02 09:37 AM
                                  SW RasterizationNicolas Capens2011/02/02 04:35 PM
                                    SW RasterizationEric Bron2011/02/02 05:11 PM
                                    SW RasterizationEric Bron2011/02/03 02:13 AM
                                      SW RasterizationNicolas Capens2011/02/04 07:57 AM
                                        SW RasterizationEric Bron2011/02/04 08:50 AM
                                          erratumEric Bron2011/02/04 08:58 AM
                                          SW RasterizationNicolas Capens2011/02/04 05:25 PM
                                            SW RasterizationDavid Kanter2011/02/04 05:33 PM
                                              SW Rasterizationanon2011/02/04 06:04 PM
                                              SW RasterizationNicolas Capens2011/02/05 03:39 PM
                                                SW RasterizationDavid Kanter2011/02/05 05:07 PM
                                                  SW RasterizationNicolas Capens2011/02/05 11:39 PM
                                        SW RasterizationEric Bron2011/02/04 10:55 AM
                                Comments pt 1David Kanter2011/02/02 01:08 PM
                                  Comments pt 1Eric Bron2011/02/02 03:16 PM
                                  Comments pt 1Gabriele Svelto2011/02/03 01:37 AM
                                    Comments pt 1Eric Bron2011/02/03 02:36 AM
                                    Comments pt 1Nicolas Capens2011/02/03 11:08 PM
                                  Comments pt 1Nicolas Capens2011/02/03 10:26 PM
                                    Comments pt 1Eric Bron2011/02/04 03:33 AM
                                      Comments pt 1Nicolas Capens2011/02/04 05:24 AM
                                    example codeEric Bron2011/02/04 04:51 AM
                                      example codeNicolas Capens2011/02/04 08:24 AM
                                        example codeEric Bron2011/02/04 08:36 AM
                                          example codeNicolas Capens2011/02/05 11:43 PM
                                    Comments pt 1Rohit2011/02/04 12:43 PM
                                      Comments pt 1Nicolas Capens2011/02/04 05:05 PM
                                        Comments pt 1David Kanter2011/02/04 05:36 PM
                                          Comments pt 1Nicolas Capens2011/02/05 02:45 PM
                                            Comments pt 1Eric Bron2011/02/05 04:13 PM
                                              Comments pt 1Nicolas Capens2011/02/05 11:52 PM
                                                Comments pt 1Eric Bron2011/02/06 01:31 AM
                                                  Comments pt 1Nicolas Capens2011/02/06 04:06 PM
                                                    Comments pt 1Eric Bron2011/02/07 03:12 AM
                                                      The need for gather/scatter supportNicolas Capens2011/02/10 10:07 AM
                                                        The need for gather/scatter supportEric Bron2011/02/11 03:11 AM
                                                          Gather/scatter performance dataNicolas Capens2011/02/13 03:39 AM
                                                            Gather/scatter performance dataEric Bron2011/02/13 07:46 AM
                                                              Gather/scatter performance dataNicolas Capens2011/02/14 07:48 AM
                                                                Gather/scatter performance dataEric Bron2011/02/14 09:32 AM
                                                                Gather/scatter performance dataEric Bron2011/02/14 10:07 AM
                                                            Gather/scatter performance dataEric Bron2011/02/13 09:00 AM
                                                              Gather/scatter performance dataNicolas Capens2011/02/14 07:49 AM
                                                                Gather/scatter performance dataEric Bron2011/02/15 02:23 AM
                                                            Gather/scatter performance dataEric Bron2011/02/13 05:06 PM
                                                              Gather/scatter performance dataNicolas Capens2011/02/14 07:52 AM
                                                                Gather/scatter performance dataEric Bron2011/02/14 09:43 AM
                                SW Rasterization - a long way offRohit2011/02/02 01:17 PM
                                  SW Rasterization - a long way offNicolas Capens2011/02/04 03:59 AM
                                    CPU only rendering - a long way offRohit2011/02/04 11:52 AM
                                      CPU only rendering - a long way offNicolas Capens2011/02/04 07:15 PM
                                        CPU only rendering - a long way offRohit2011/02/05 02:00 AM
                                          CPU only rendering - a long way offNicolas Capens2011/02/05 09:45 PM
                                            CPU only rendering - a long way offDavid Kanter2011/02/06 09:51 PM
                                              CPU only rendering - a long way offGian-Carlo Pascutto2011/02/07 12:22 AM
                                                EncryptionDavid Kanter2011/02/07 01:18 AM
                                                  EncryptionNicolas Capens2011/02/07 07:51 AM
                                                    EncryptionDavid Kanter2011/02/07 11:50 AM
                                                      EncryptionNicolas Capens2011/02/08 10:26 AM
                                                        CPUs are latency optimizedDavid Kanter2011/02/08 11:38 AM
                                                          efficient compiler on an efficient GPU real today.sJ2011/02/08 11:29 PM
                                                          CPUs are latency optimizedNicolas Capens2011/02/09 09:49 PM
                                                            CPUs are latency optimizedEric Bron2011/02/10 12:49 AM
                                                              CPUs are latency optimizedAntti-Ville Tuunainen2011/02/10 06:16 AM
                                                              CPUs are latency optimizedNicolas Capens2011/02/10 07:04 AM
                                                                CPUs are latency optimizedEric Bron2011/02/10 07:48 AM
                                                                  CPUs are latency optimizedNicolas Capens2011/02/10 01:31 PM
                                                                    CPUs are latency optimizedEric Bron2011/02/11 02:43 AM
                                                                      CPUs are latency optimizedNicolas Capens2011/02/11 07:31 AM
                                                            CPUs are latency optimizedEduardoS2011/02/10 05:29 PM
                                                              CPUs are latency optimizedAnon2011/02/10 06:40 PM
                                                                CPUs are latency optimizedDavid Kanter2011/02/10 08:33 PM
                                                                CPUs are latency optimizedEduardoS2011/02/11 02:18 PM
                                                              CPUs are latency optimizedNicolas Capens2011/02/11 05:56 AM
                                                                CPUs are latency optimizedRohit2011/02/11 07:33 AM
                                                                  CPUs are latency optimizedNicolas Capens2011/02/14 02:19 AM
                                                                    CPUs are latency optimizedEric Bron2011/02/14 03:23 AM
                                                                    CPUs are latency optimizedEduardoS2011/02/14 01:11 PM
                                                                CPUs are latency optimizedDavid Kanter2011/02/11 02:45 PM
                                                                  CPUs are latency optimizedNicolas Capens2011/02/15 05:22 AM
                                                                    CPUs are latency optimizedDavid Kanter2011/02/15 12:47 PM
                                                                      CPUs are latency optimizedNicolas Capens2011/02/15 07:10 PM
                                                                        Have funDavid Kanter2011/02/15 10:04 PM
                                                                          Have funNicolas Capens2011/02/17 03:59 AM
                                                                            Have funBrett2011/02/17 12:56 PM
                                                                              Have funNicolas Capens2011/02/19 04:53 PM
                                                                                Have funBrett2011/02/20 06:08 PM
                                                                                  Have funBrett2011/02/20 07:13 PM
                                                                                  On-die storage to fight AmdahlNicolas Capens2011/02/23 05:37 PM
                                                                                    On-die storage to fight AmdahlBrett2011/02/23 09:59 PM
                                                                                      On-die storage to fight AmdahlBrett2011/02/23 10:08 PM
                                                                                      On-die storage to fight AmdahlNicolas Capens2011/02/24 07:42 PM
                                                                                        On-die storage to fight AmdahlRohit2011/02/25 11:02 PM
                                                                                          On-die storage to fight AmdahlNicolas Capens2011/03/09 06:53 PM
                                                                                            On-die storage to fight AmdahlRohit2011/03/10 08:02 AM
                                                                                              NVIDIA using tile based rendering?Nathan Monson2011/03/11 07:58 PM
                                                                                                NVIDIA using tile based rendering?Rohit2011/03/12 04:29 AM
                                                                                                  NVIDIA using tile based rendering?Nathan Monson2011/03/12 11:05 AM
                                                                                                    NVIDIA using tile based rendering?Rohit2011/03/12 11:16 AM
                                                                                        On-die storage to fight AmdahlBrett2011/02/26 02:10 AM
                                                                                          On-die storage to fight AmdahlNathan Monson2011/02/26 01:51 PM
                                                                                            On-die storage to fight AmdahlBrett2011/02/26 04:40 PM
                                                                                          Convergence is inevitableNicolas Capens2011/03/09 08:22 PM
                                                                                            Convergence is inevitableBrett2011/03/09 10:59 PM
                                                                                              Convergence is inevitableAntti-Ville Tuunainen2011/03/10 03:34 PM
                                                                                                Convergence is inevitableBrett2011/03/10 09:39 PM
                                                                                                  Procedural texturing?David Kanter2011/03/11 01:32 AM
                                                                                                    Procedural texturing?hobold2011/03/11 03:59 AM
                                                                                                    Procedural texturing?Dan Downs2011/03/11 09:28 AM
                                                                                                    Procedural texturing?Mark Roulo2011/03/11 02:58 PM
                                                                                                    Procedural texturing?Anon2011/03/11 06:11 PM
                                                                                                      Procedural texturing?Nathan Monson2011/03/11 07:30 PM
                                                                                                        Procedural texturing?Brett2011/03/15 07:45 AM
                                                                                                          Procedural texturing?Seni2011/03/15 10:13 AM
                                                                                                            Procedural texturing?Brett2011/03/15 11:45 AM
                                                                                                              Procedural texturing?Seni2011/03/15 02:09 PM
                                                                                                      Procedural texturing?Brett2011/03/11 10:02 PM
                                                                                                    Procedural texturing?Brett2011/03/11 09:34 PM
                                                                                                    Procedural texturing?Eric Bron2011/03/12 03:37 AM
                                                                                            Convergence is inevitableJouni Osmala2011/03/09 11:28 PM
                                                                                            Convergence is inevitableBrett2011/04/05 05:08 PM
                                                                                              Convergence is inevitableNicolas Capens2011/04/07 05:23 AM
                                                                                                Convergence is inevitablenone2011/04/07 07:03 AM
                                                                                                  Convergence is inevitableNicolas Capens2011/04/07 10:34 AM
                                                                                                  Convergence is inevitableanon2011/04/07 02:15 PM
                                                                                                    Convergence is inevitablenone2011/04/08 01:57 AM
                                                                                                  Convergence is inevitableBrett2011/04/07 08:04 PM
                                                                                                    Convergence is inevitablenone2011/04/08 02:14 AM
                                                                                                      Gather implementationDavid Kanter2011/04/08 12:01 PM
                                                                                                RAM LatencyDavid Hess2011/04/07 08:22 AM
                                                                                                  RAM LatencyBrett2011/04/07 07:20 PM
                                                                                                  RAM LatencyNicolas Capens2011/04/07 10:18 PM
                                                                                                    RAM LatencyBrett2011/04/08 05:33 AM
                                                                                                      RAM LatencyNicolas Capens2011/04/10 02:23 PM
                                                                                                    RAM LatencyRohit2011/04/08 06:57 AM
                                                                                                      RAM LatencyNicolas Capens2011/04/10 01:23 PM
                                                                                                        RAM LatencyDavid Kanter2011/04/10 02:27 PM
                                                                                                        RAM LatencyRohit2011/04/11 06:17 AM
                                                                                                Convergence is inevitableEric Bron2011/04/07 09:46 AM
                                                                                                  Convergence is inevitableNicolas Capens2011/04/07 09:50 PM
                                                                                                    Convergence is inevitableEric Bron2011/04/08 12:39 AM
                                                                                      Flaws in PowerVRRohit2011/02/25 11:21 PM
                                                                                        Flaws in PowerVRBrett2011/02/26 12:37 AM
                                                                                          Flaws in PowerVRPaul2011/02/26 05:17 AM
                                                                            Have funDavid Kanter2011/02/18 12:52 PM
                                                                              Have funMichael S2011/02/19 12:12 PM
                                                                                Have funDavid Kanter2011/02/19 03:26 PM
                                                                                  Have funMichael S2011/02/19 04:43 PM
                                                                                    Have funanon2011/02/19 05:02 PM
                                                                                      Have funMichael S2011/02/19 05:56 PM
                                                                                        Have funanon2011/02/20 03:50 PM
                                                                                Have funEduardoS2011/02/20 02:44 PM
                                                                                  Linear vs non-linearEduardoS2011/02/20 02:55 PM
                                                                                  Have funMichael S2011/02/20 04:19 PM
                                                                                    Have funEduardoS2011/02/20 05:51 PM
                                                                              Have funNicolas Capens2011/02/21 11:12 AM
                                                                                Have funMichael S2011/02/21 12:38 PM
                                                                                  Have funEric Bron2011/02/21 02:10 PM
                                                                                  Have funEric Bron2011/02/21 02:39 PM
                                                                                    Have funMichael S2011/02/21 06:13 PM
                                                                                      Have funEric Bron2011/02/22 12:43 AM
                                                                                        Have funMichael S2011/02/22 01:47 AM
                                                                                          Have funEric Bron2011/02/22 02:10 AM
                                                                                            Have funMichael S2011/02/22 11:37 AM
                                                                                              Have funanon2011/02/22 01:38 PM
                                                                                              Have funEduardoS2011/02/22 03:49 PM
                                                                                  Gather/scatter efficiencyNicolas Capens2011/02/23 06:37 PM
                                                                                    Gather/scatter efficiencyanonymous2011/02/23 06:51 PM
                                                                                      Gather/scatter efficiencyNicolas Capens2011/02/24 06:57 PM
                                                                                        Gather/scatter efficiencyanonymous2011/02/24 07:16 PM
                                                                                          Gather/scatter efficiencyMichael S2011/02/25 07:45 AM
                                                                                            Gather implementationDavid Kanter2011/02/25 05:34 PM
                                                                                              Gather implementationMichael S2011/02/26 10:40 AM
                                                                                                Gather implementationanon2011/02/26 11:52 AM
                                                                                                  Gather implementationMichael S2011/02/26 12:16 PM
                                                                                                    Gather implementationanon2011/02/26 11:22 PM
                                                                                                      Gather implementationMichael S2011/02/27 07:23 AM
                                                                                          Gather/scatter efficiencyNicolas Capens2011/02/28 03:14 PM
                                                                                Consider yourself ignoredDavid Kanter2011/02/22 01:05 AM
                                                                        one more anti-FMA flame. By me.Michael S2011/02/16 07:40 AM
                                                                          one more anti-FMA flame. By me.Eric Bron2011/02/16 08:30 AM
                                                                          one more anti-FMA flame. By me.Eric Bron2011/02/16 09:15 AM
                                                                          one more anti-FMA flame. By me.Nicolas Capens2011/02/17 06:27 AM
                                                                            anti-FMA != anti-throughput or anti-SGMichael S2011/02/17 07:42 AM
                                                                              anti-FMA != anti-throughput or anti-SGNicolas Capens2011/02/17 05:46 PM
                                                                                Tarantula paperPaul A. Clayton2011/02/18 12:38 AM
                                                                                  Tarantula paperNicolas Capens2011/02/19 05:19 PM
                                                                                anti-FMA != anti-throughput or anti-SGEric Bron2011/02/18 01:48 AM
                                                                                  anti-FMA != anti-throughput or anti-SGNicolas Capens2011/02/20 03:46 PM
                                                                                    anti-FMA != anti-throughput or anti-SGMichael S2011/02/20 05:00 PM
                                                                                      anti-FMA != anti-throughput or anti-SGNicolas Capens2011/02/23 04:05 AM
                                                                                        Software pipelining on x86David Kanter2011/02/23 05:04 AM
                                                                                          Software pipelining on x86JS2011/02/23 05:25 AM
                                                                                            Software pipelining on x86Salvatore De Dominicis2011/02/23 08:37 AM
                                                                                            Software pipelining on x86Jouni Osmala2011/02/23 09:10 AM
                                                                                            Software pipelining on x86LeeMiller2011/02/23 10:07 PM
                                                                                          Software pipelining on x86Nicolas Capens2011/02/24 03:17 PM
                                                                                            Software pipelining on x86anonymous2011/02/24 07:04 PM
                                                                                              Software pipelining on x86Nicolas Capens2011/02/28 09:27 AM
                                                                                              Software pipelining on x86Antti-Ville Tuunainen2011/03/02 04:31 AM
                                                                                              Software pipelining on x86Megol2011/03/02 12:55 PM
                                                                                                Software pipelining on x86Geert Bosch2011/03/03 07:58 AM
                                                                                            FMA benefits and latency predictionsDavid Kanter2011/02/25 05:14 PM
                                                                                              FMA benefits and latency predictionsAntti-Ville Tuunainen2011/02/26 10:43 AM
                                                                                                FMA benefits and latency predictionsMatt Waldhauer2011/02/27 06:42 AM
                                                                                              FMA benefits and latency predictionsNicolas Capens2011/03/09 06:11 PM
                                                                                                FMA benefits and latency predictionsRohit2011/03/10 08:11 AM
                                                                                                  FMA benefits and latency predictionsEric Bron2011/03/10 09:30 AM
                                                                                        anti-FMA != anti-throughput or anti-SGMichael S2011/02/23 05:19 AM
                                                                                          anti-FMA != anti-throughput or anti-SGNicolas Capens2011/02/23 07:50 AM
                                                                                            anti-FMA != anti-throughput or anti-SGMichael S2011/02/23 10:37 AM
                                                                                              FMA and beyondNicolas Capens2011/02/24 04:47 PM
                                                                                                detour on terminologyhobold2011/02/24 07:08 PM
                                                                                                  detour on terminologyNicolas Capens2011/02/28 02:24 PM
                                                                                                    detour on terminologyEric Bron2011/03/01 02:38 AM
                                                                                                      detour on terminologyMichael S2011/03/01 05:03 AM
                                                                                                        detour on terminologyEric Bron2011/03/01 05:39 AM
                                                                                                          detour on terminologyMichael S2011/03/01 08:33 AM
                                                                                                            detour on terminologyEric Bron2011/03/01 09:34 AM
                                                                                                              erratum Eric Bron2011/03/01 09:54 AM
                                                                                                      detour on terminologyNicolas Capens2011/03/10 08:39 AM
                                                                                                        detour on terminologyEric Bron2011/03/10 09:50 AM
                                                                                        anti-FMA != anti-throughput or anti-SGNicolas Capens2011/02/23 06:12 AM
                                                                                    anti-FMA != anti-throughput or anti-SGDavid Kanter2011/02/20 11:25 PM
                                                                              anti-FMA != anti-throughput or anti-SGDavid Kanter2011/02/17 06:51 PM
                                                                                Tarantula vector unit well-integratedPaul A. Clayton2011/02/18 12:38 AM
                                                                                anti-FMA != anti-throughput or anti-SGMegol2011/02/19 02:17 PM
                                                                                  anti-FMA != anti-throughput or anti-SGDavid Kanter2011/02/20 02:09 AM
                                                                                    anti-FMA != anti-throughput or anti-SGMegol2011/02/20 09:55 AM
                                                                                      anti-FMA != anti-throughput or anti-SGDavid Kanter2011/02/20 01:39 PM
                                                                                        anti-FMA != anti-throughput or anti-SGEduardoS2011/02/20 02:35 PM
                                                                                        anti-FMA != anti-throughput or anti-SGMegol2011/02/21 08:12 AM
                                                                              anti-FMA != anti-throughput or anti-SGanon2011/02/17 10:44 PM
                                                                                anti-FMA != anti-throughput or anti-SGMichael S2011/02/18 06:20 AM
                                                                            one more anti-FMA flame. By me.Eric Bron2011/02/17 08:24 AM
                                                                              thanksMichael S2011/02/17 04:56 PM
                                                                    CPUs are latency optimizedEduardoS2011/02/15 01:24 PM
                                                                    SwiftShader SNB testEric Bron2011/02/15 03:46 PM
                                                                      SwiftShader NHM testEric Bron2011/02/15 04:50 PM
                                                                      SwiftShader SNB testNicolas Capens2011/02/17 12:06 AM
                                                                        SwiftShader SNB testEric Bron2011/02/17 01:21 AM
                                                                        SwiftShader SNB testEric Bron2011/02/22 10:32 AM
                                                                          SwiftShader SNB test 2nd runEric Bron2011/02/22 10:51 AM
                                                                            SwiftShader SNB test 2nd runNicolas Capens2011/02/23 02:14 PM
                                                                              SwiftShader SNB test 2nd runEric Bron2011/02/23 02:42 PM
                                                                                Win7SP1 out but no AVX hype?Michael S2011/02/24 03:14 AM
                                                                                  Win7SP1 out but no AVX hype?Eric Bron2011/02/24 03:39 AM
                                                                  CPUs are latency optimizedEric Bron2011/02/15 08:02 AM
                                                                CPUs are latency optimizedEduardoS2011/02/11 03:40 PM
                                              CPU only rendering - not a long way offNicolas Capens2011/02/07 06:45 AM
                                                CPU only rendering - not a long way offDavid Kanter2011/02/07 12:09 PM
                                                  CPU only rendering - not a long way offanonymous2011/02/07 10:25 PM
                                                    Sandy Bridge IGP EUsDavid Kanter2011/02/07 11:22 PM
                                                      Sandy Bridge IGP EUsHannes2011/02/08 05:59 AM
                                SW Rasterization - Why?Seni2011/02/02 02:53 PM
                                  Market reasons to ditch the IGPNicolas Capens2011/02/10 03:12 PM
                                    Market reasons to ditch the IGPSeni2011/02/11 05:42 AM
                                      Market reasons to ditch the IGPNicolas Capens2011/02/16 04:29 AM
                                        Market reasons to ditch the IGPSeni2011/02/16 01:39 PM
                                          An excellent post!David Kanter2011/02/16 03:18 PM
                                          CPUs clock higherMoritz2011/02/17 08:06 AM
                                          Market reasons to ditch the IGPNicolas Capens2011/02/18 06:22 PM
                                            Market reasons to ditch the IGPIntelUser20002011/02/18 07:20 PM
                                              Market reasons to ditch the IGPNicolas Capens2011/02/21 02:42 PM
                                                Bad data (repeated)David Kanter2011/02/22 12:21 AM
                                                  Bad data (repeated)none2011/02/22 03:04 AM
                                                    13W or 8W?Foo_2011/02/22 06:00 AM
                                                      13W or 8W?Linus Torvalds2011/02/22 08:58 AM
                                                        13W or 8W?David Kanter2011/02/22 11:33 AM
                                                          13W or 8W?Mark Christiansen2011/02/22 02:47 PM
                                                  Bigger pictureNicolas Capens2011/02/24 06:33 PM
                                                    Bigger pictureNicolas Capens2011/02/24 08:06 PM
                                                    20+ WattNicolas Capens2011/02/24 08:18 PM
                                                      <20WDavid Kanter2011/02/25 01:13 PM
                                                        >20WNicolas Capens2011/03/08 07:34 PM
                                                          IGP is 3X more efficientDavid Kanter2011/03/08 10:53 PM
                                                            IGP is 3X more efficientEric Bron2011/03/09 02:44 AM
                                                          >20WEric Bron2011/03/09 03:48 AM
                                                    Specious data and claims are still speciousDavid Kanter2011/02/25 02:38 AM
                                                      IGP power consumption, LRB samplersNicolas Capens2011/03/08 06:24 PM
                                                        IGP power consumption, LRB samplersEduardoS2011/03/08 06:52 PM
                                                        IGP power consumption, LRB samplersRohit2011/03/09 07:42 AM
                                                Market reasons to ditch the IGPnone2011/02/22 02:58 AM
                                                  Market reasons to ditch the IGPNicolas Capens2011/02/24 06:43 PM
                                                Market reasons to ditch the IGPslacker2011/02/22 02:32 PM
                                            Market reasons to ditch the IGPSeni2011/02/18 09:51 PM
                                              Correction - 28 comparators, not 36. (NT)Seni2011/02/18 10:03 PM
                                              Market reasons to ditch the IGPGabriele Svelto2011/02/19 01:49 AM
                                                Market reasons to ditch the IGPSeni2011/02/19 11:59 AM
                                                  Market reasons to ditch the IGPExophase2011/02/20 10:43 AM
                                              Market reasons to ditch the IGPEduardoS2011/02/19 10:13 AM
                                                Market reasons to ditch the IGPSeni2011/02/19 11:46 AM
                                              The next revolutionNicolas Capens2011/02/22 03:33 AM
                                                The next revolutionGabriele Svelto2011/02/22 09:15 AM
                                                  The next revolutionEric Bron2011/02/22 09:48 AM
                                                  The next revolutionNicolas Capens2011/02/23 07:39 PM
                                                    The next revolutionGabriele Svelto2011/02/24 12:43 AM
                                                      GPGPU content creation (or lack of it)Nicolas Capens2011/02/28 07:39 AM
                                                        GPGPU content creation (or lack of it)The market begs to differ2011/03/01 06:32 AM
                                                          GPGPU content creation (or lack of it)Nicolas Capens2011/03/09 09:14 PM
                                                            GPGPU content creation (or lack of it)Gabriele Svelto2011/03/10 01:01 AM
                                                        The market begs to differGabriele Svelto2011/03/01 06:33 AM
                                                    The next revolutionAnon2011/02/24 02:15 AM
                                                      The next revolutionNicolas Capens2011/02/28 02:34 PM
                                                The next revolutionSeni2011/02/22 02:02 PM
                                                  The next revolutionGabriele Svelto2011/02/23 06:27 AM
                                                    The next revolutionSeni2011/02/23 09:03 AM
                                                  The next revolutionNicolas Capens2011/02/24 06:11 AM
                                                    The next revolutionSeni2011/02/24 08:45 PM
                                                      IGP sampler countNicolas Capens2011/03/03 05:19 AM
                                                      Latency and throughput optimized coresNicolas Capens2011/03/07 03:28 PM
                                                        The real reason no IGP /CPU converge.Jouni Osmala2011/03/07 11:34 PM
                                                          Still convergingNicolas Capens2011/03/13 03:08 PM
                                                      Homogeneous CPU advantagesNicolas Capens2011/03/08 12:12 AM
                                                        Homogeneous CPU advantagesSeni2011/03/08 09:23 AM
                                                        Homogeneous CPU advantagesDavid Kanter2011/03/08 11:16 AM
                                                          Homogeneous CPU advantagesBrett2011/03/09 03:37 AM
                                                        Homogeneous CPU advantagesJouni Osmala2011/03/09 12:27 AM
                                SW Rasterizationfirsttimeposter2011/02/03 11:18 PM
                                  SW RasterizationNicolas Capens2011/02/04 04:48 AM
                                    SW RasterizationEric Bron2011/02/04 05:14 AM
                                      SW RasterizationNicolas Capens2011/02/04 08:36 AM
                                        SW RasterizationEric Bron2011/02/04 08:42 AM
                        Sandy Bridge CPU article onlineEric Bron2011/01/26 03:23 AM
                        Sandy Bridge CPU article onlineGabriele Svelto2011/02/04 04:31 AM
                          Sandy Bridge CPU article onlineNicolas Capens2011/02/05 08:46 PM
                            Sandy Bridge CPU article onlineGabriele Svelto2011/02/06 06:20 AM
                              Sandy Bridge CPU article onlineNicolas Capens2011/02/06 06:07 PM
      Sandy Bridge CPU article onlinearch.comp2011/01/06 10:58 PM
        Sandy Bridge CPU article onlineSeni2011/01/07 10:25 AM
    Sandy Bridge CPU article onlineMichael S2011/01/05 04:28 AM
      Sandy Bridge CPU article onlineNicolas Capens2011/01/05 06:06 AM
        permuting vector elements (yet again)hobold2011/01/05 05:15 PM
          permuting vector elements (yet again)Nicolas Capens2011/01/06 06:11 AM
      Sandy Bridge CPU article onlineEric Bron2011/01/05 12:46 PM
        wow ...!hobold2011/01/05 05:19 PM
          wow ...!Nicolas Capens2011/01/05 06:11 PM
          wow ...!Eric Bron2011/01/05 10:46 PM
            compress LUTEric Bron2011/01/05 11:05 PM
          wow ...!Michael S2011/01/06 02:25 AM
            wow ...!Nicolas Capens2011/01/06 06:26 AM
              wow ...!Eric Bron2011/01/06 09:08 AM
                wow ...!Nicolas Capens2011/01/07 07:19 AM
                wow ...!Steve Underwood2011/01/07 10:53 PM
                  saturationhobold2011/01/08 10:25 AM
                    saturationSteve Underwood2011/01/08 12:38 PM
                      saturationMichael S2011/01/08 01:05 PM
                        128 bit floatsBrett2011/01/08 01:39 PM
                          128 bit floatsMichael S2011/01/08 02:10 PM
                            128 bit floatsAnil Maliyekkel2011/01/08 03:46 PM
                              128 bit floatsKevin G2011/02/27 11:15 AM
                                128 bit floatshobold2011/02/27 04:42 PM
                                  128 bit floatsIan Ollmann2011/02/28 04:56 PM
                                    OpenCL FP accuracyhobold2011/03/01 06:45 AM
                                      OpenCL FP accuracyanon2011/03/01 08:03 PM
                                        OpenCL FP accuracyhobold2011/03/02 03:53 AM
                                      OpenCL FP accuracyEric Bron2011/03/02 07:10 AM
                                        pet projecthobold2011/03/02 09:22 AM
                                          pet projectAnon2011/03/02 09:10 PM
                                            pet projecthobold2011/03/03 04:57 AM
                                          pet projectEric Bron2011/03/03 02:29 AM
                                            pet projecthobold2011/03/03 05:14 AM
                                              pet projectEric Bron2011/03/03 03:10 PM
                                                pet projecthobold2011/03/03 04:04 PM
                                        OpenCL and AMDVincent Diepeveen2011/03/07 01:44 PM
                                          OpenCL and AMDEric Bron2011/03/08 02:05 AM
                                            OpenCL and AMDVincent Diepeveen2011/03/08 08:27 AM
                                128 bit floatsMichael S2011/02/27 04:46 PM
                                128 bit floatsAnil Maliyekkel2011/02/27 06:14 PM
                        saturationSteve Underwood2011/01/17 04:42 AM
            wow ...!hobold2011/01/06 05:05 PM
  RingMoritz2011/01/20 10:51 PM
    RingAntti-Ville Tuunainen2011/01/21 12:25 PM
      RingMoritz2011/01/23 01:38 AM
        RingMichael S2011/01/23 04:04 AM
          So fastMoritz2011/01/23 07:57 AM
            So fastDavid Kanter2011/01/23 10:05 AM
  Sandy Bridge CPU (L1D cache)Gordon Ward2011/09/09 02:47 AM
    Sandy Bridge CPU (L1D cache)David Kanter2011/09/09 04:19 PM
      Sandy Bridge CPU (L1D cache)EduardoS2011/09/09 08:53 PM
      Sandy Bridge CPU (L1D cache)Paul A. Clayton2011/09/10 05:12 AM
      Sandy Bridge CPU (L1D cache)Michael S2011/09/10 09:41 AM
        Sandy Bridge CPU (L1D cache)EduardoS2011/09/10 11:17 AM
  Address Ports on Sandy Bridge SchedulerVictor2011/10/16 06:40 AM
    Address Ports on Sandy Bridge SchedulerEduardoS2011/10/16 07:45 PM
    Address Ports on Sandy Bridge SchedulerMegol2011/10/17 09:20 AM
      Address Ports on Sandy Bridge SchedulerVictor2011/10/18 05:34 PM
        Benefits of early schedulingPaul A. Clayton2011/10/18 06:53 PM
          Benefits of early schedulingVictor2011/10/19 05:58 PM
            Consistency and invalidation orderingPaul A. Clayton2011/10/20 04:43 AM
        Address Ports on Sandy Bridge SchedulerJohn Upcroft2011/10/21 04:16 PM
          Address Ports on Sandy Bridge SchedulerDavid Kanter2011/10/22 10:49 AM
            Address Ports on Sandy Bridge SchedulerJohn Upcroft2011/10/26 01:24 PM
              Store TLB look-up at commit?Paul A. Clayton2011/10/26 08:30 PM
                Store TLB look-up at commit?Richard Scott2011/10/26 09:40 PM
                  Just a guessPaul A. Clayton2011/10/27 01:54 PM
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