Bulldozer's integer execution units

By: EduardoS (no.delete@this.spam.com), April 26, 2012 2:47 pm
Room: Moderated Discussions
Exophase (exophase@gmail.com) on 4/26/12 wrote:
---------------------------
>I wonder how much the lack of bypassing from AGU to the opposite ALU and AGU hurts
>performance. What kind of penalty does this incur; does latency increase entirely
>until a PRF writeback stage or does it take a longer bypass path (ie, AG0->EX0->EX1->AG1 to cover the entire distance)?

Assuming the manual is correct and no instruction can use AGU without ALU the answear is 0, there will always space on the corresponding AGU.

AGUS will go underutilized, as previous generation.

The ALU/AGU relation looks more and more like previous generation, what's the difference? If they are equal why so much loud about the being different? The coupling in previous generation wasn't a bad idea, if it persists why deny it?
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  So, what do people think of these numbers>I.S.T.2012/04/19 06:34 PM
    So, what do people think of these numbers>Linus Torvalds2012/04/20 07:34 AM
      So, what do people think of these numbers>Kira2012/04/20 08:18 AM
        So, what do people think of these numbers>Linus Torvalds2012/04/20 09:05 AM
      So, what do people think of these numbers>Doug Siebert2012/04/20 08:00 PM
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      So, what do people think of these numbers>bakaneko2012/04/20 10:37 AM
        So, what do people think of these numbers>Linus Torvalds2012/04/20 12:24 PM
          So, what do people think of these numbers>Joel2012/04/20 01:59 PM
            So, what do people think of these numbers>Kira2012/04/20 02:32 PM
              So, what do people think of these numbers>EduardoS2012/04/20 03:00 PM
                Bulldozer's Oddities.Joel2012/04/20 03:54 PM
                  In defense of Bulldozer's OdditiesDavid Kanter2012/04/20 04:32 PM
                    In defense of Bulldozer's OdditiesExophase2012/04/20 06:11 PM
                      In defense of Bulldozer's OdditiesEduardoS2012/04/20 06:46 PM
                        In defense of Bulldozer's OdditiesExophase2012/04/20 07:18 PM
                          In defense of Bulldozer's Odditiesanonymous2012/04/20 10:26 PM
                            In defense of Bulldozer's OdditiesJJB2012/04/20 10:34 PM
                              In defense of Bulldozer's Odditiesimaxx2012/04/21 06:21 AM
                                In defense of Bulldozer's OdditiesMichael S2012/04/21 09:42 AM
                                  Bulldozer's integer execution unitsDavid Kanter2012/04/25 03:29 PM
                                    Bulldozer's integer execution unitsExophase2012/04/26 11:17 AM
                                      Bulldozer's integer execution unitsanonymous2012/04/26 02:15 PM
                                        Bulldozer's integer execution unitsEduardoS2012/04/26 02:40 PM
                                          Bulldozer's integer execution unitsFoo_2012/04/27 07:21 AM
                                            Bulldozer's integer execution unitsMegol2012/04/27 12:38 PM
                                      Bulldozer's integer execution unitsEduardoS2012/04/26 02:47 PM
                                        Bulldozer's integer execution unitsExophase2012/04/26 04:02 PM
                                          Bulldozer's integer execution unitsEduardoS2012/04/26 05:03 PM
                                            Bulldozer's integer execution unitsExophase2012/04/26 05:24 PM
                                              Bulldozer's integer execution unitsEduardoS2012/04/26 06:18 PM
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                                                  Bulldozer's cache memory performanceEduardoS2012/04/28 09:06 AM
                                      Bulldozer's integer execution unitsDavid Kanter2012/04/26 03:03 PM
                                        Bulldozer's integer execution unitsExophase2012/04/26 03:59 PM
                                          Bulldozer's integer execution unitsDavid Kanter2012/04/26 09:53 PM
                                            Bulldozer's integer execution unitsExophase2012/04/27 07:42 AM
                                              Bulldozer's integer execution unitsDavid Kanter2012/04/27 10:06 AM
                                                Bulldozer's integer execution unitsEduardoS2012/04/27 12:27 PM
                                                K8 divided pipelines?Paul A. Clayton2012/04/27 12:59 PM
                                          Bulldozer's integer execution unitsMichael S2012/04/27 03:37 AM
                                            Bulldozer's integer execution unitsExophase2012/04/27 07:33 AM
                                            Bulldozer's integer execution unitsanonymous2012/04/27 08:03 AM
                                    Renaming FlagsKonrad Schwarz2012/04/27 02:04 AM
                                      Renaming Flagsnone2012/04/27 03:03 AM
                                        Renaming FlagsMegol2012/04/27 11:42 AM
                                    Bulldozer's integer execution unitshcl642012/04/27 03:31 PM
                                      VEX supports 3+ operands. FPU have renaming already(NT)Megol2012/04/28 07:20 AM
                              In defense of Bulldozer's OdditiesLinus Torvalds2012/04/21 11:26 AM
                                Thanks for the lessonJJB2012/04/21 01:23 PM
                                  Side note..Linus Torvalds2012/04/21 01:57 PM
                            In defense of Bulldozer's OdditiesExophase2012/04/21 11:13 AM
                            In defense of Bulldozer's OdditiesEduardoS2012/04/21 11:53 AM
                    In defense of Bulldozer's OdditiesGionatan Danti2012/04/21 11:42 AM
                    In defense of Bulldozer's Odditieshcl642012/04/27 04:07 PM
                      In defense of Bulldozer's OdditiesDavid Kanter2012/04/28 05:29 AM
                        In defense of Bulldozer's Odditieshcl642012/04/28 01:44 PM
                          In defense of Bulldozer's OdditiesDavid Kanter2012/04/28 08:42 PM
                            In defense of Bulldozer's Odditieshcl642012/04/28 09:39 PM
                  Bulldozer's Oddities.EduardoS2012/04/20 05:05 PM
                    Bulldozer's Oddities.anon2012/04/20 07:32 PM
                      Bulldozer's Oddities.EduardoS2012/04/21 11:37 AM
                        Bulldozer's Oddities.anon2012/04/21 09:16 PM
                          Bulldozer's Oddities.EduardoS2012/04/21 09:43 PM
                            Bulldozer's Oddities.anon2012/04/22 01:09 AM
                              Bulldozer's Oddities.EduardoS2012/04/22 12:57 PM
                                Bulldozer's Oddities.anon2012/04/22 03:17 PM
                                  Bulldozer's Oddities.EduardoS2012/04/22 04:05 PM
                                    Bulldozer's Oddities.anon2012/04/22 04:42 PM
                                      Bulldozer's Oddities.anon2012/04/22 05:01 PM
                                      Bulldozer's Oddities.EduardoS2012/04/22 09:28 PM
                                        Bulldozer's Oddities.anon2012/04/22 10:05 PM
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                      Bulldozer's isn't bad.hcl642012/04/27 04:58 PM
                        Bulldozer's isn't bad.anon2012/04/27 05:16 PM
                          Bulldozer's isn't bad.hcl642012/04/27 06:33 PM
                            Bulldozer's isn't bad.rwessel2012/04/27 10:12 PM
                        Bulldozer's isn't bad.EduardoS2012/04/28 08:29 AM
                          Bulldozer's isn't bad.EduardoS2012/04/28 08:30 AM
                          Bulldozer's isn't bad.Michael S2012/04/28 11:36 AM
                    Bulldozer is made for SPEC fpPelle-482012/04/21 10:41 AM
                  Bulldozer's Oddities.mpx2012/04/22 02:47 AM
                    Bulldozer's Oddities.EduardoS2012/04/22 12:57 PM
                      Bulldozer's Oddities.mpx2012/04/23 06:04 AM
                        Bulldozer's Oddities.Eric2012/04/23 11:33 AM
                          Bulldozer's Oddities.EduardoS2012/04/23 01:22 PM
                            Bulldozer's Oddities.Eric2012/04/23 06:30 PM
                              Bulldozer's Oddities.hcl642012/04/27 05:16 PM
                            Bulldozer's Oddities.Y2012/04/25 03:34 AM
                              Bulldozer's IDIVHeikki Kultala2012/04/27 09:56 PM
                                Bulldozer's IDIVY2012/04/30 12:51 AM
                                  Bulldozer's IDIVEduardoS2012/04/30 04:39 AM
                                    Bulldozer's IDIVP3Dnow2012/05/08 12:23 AM
                                      Bulldozer's IDIVExophase2012/05/08 06:37 AM
                        Bulldozer's Oddities.EduardoS2012/04/23 01:15 PM
              Clustered MT as SMT for high frequencyPaul A. Clayton2012/04/20 03:10 PM
                Clustered MT as SMT for high frequencyhcl642012/04/27 11:56 PM
                  Clustered MT as SMT for high frequencyanonymous2012/04/28 12:43 AM
                    Clustered MT as SMT for high frequencyhcl642012/04/28 01:59 PM
                      Clustered MT as SMT for high frequencyanonymous2012/04/28 07:45 PM
                  Clustered MT as SMT for high frequencyanon2012/04/28 01:13 AM
                    Clustered MT as SMT for high frequencyhcl642012/04/28 02:23 PM
                      Clustered MT as SMT for high frequencyanon2012/04/28 05:19 PM
                        Clustered MT as SMT for high frequencyhcl642012/04/28 06:58 PM
                  Clustered MT as SMT for high frequencyDavid Kanter2012/04/28 05:38 AM
                    Guessed meaning of "strong dependency model"Paul A. Clayton2012/04/28 06:24 AM
                      Guessed meaning of "strong dependency model"EduardoS2012/04/28 08:46 AM
                        *Right meaning* about "strong dependency model"hcl642012/04/28 03:59 PM
                    Clustered MT as SMT for high frequencyhcl642012/04/28 03:24 PM
                      Clustered MT as SMT for high frequencyanonymous2012/04/28 07:50 PM
                        Clustered MT as SMT for high frequencyhcl642012/04/28 08:47 PM
                          SNB widthDavid Kanter2012/04/28 08:48 PM
                            SNB widthhcl642012/04/29 01:24 AM
                      Clustered MT as SMT for high frequencyDavid Kanter2012/04/28 08:56 PM
                        Clustered MT as SMT for high frequencyhcl642012/04/28 10:44 PM
                          SOI, FD vs. PDDavid Kanter2012/04/29 06:19 AM
                            SOI, FD vs. PDhcl642012/04/29 04:31 PM
                              SOI, FD vs. PDDavid Kanter2012/04/29 10:26 PM
                                SOI, FD vs. PDhcl642012/04/30 07:08 AM
                                  SOI, FD vs. PDDavid Kanter2012/04/30 08:59 AM
                                    SOI, FD vs. PDhcl642012/04/30 05:10 PM
                                      SOI, FD vs. PDDavid Kanter2012/04/30 05:32 PM
                                        SOI, FD vs. PDhcl642012/04/30 09:47 PM
                                          SOI, FD vs. PDDavid Kanter2012/05/01 01:24 AM
                                            SOI, FD vs. PDhcl642012/05/01 04:46 AM
                                            SOI, FD vs. PDhcl642012/05/01 05:37 AM
                                              SOI, FD vs. PDDavid Kanter2012/05/01 07:19 AM
                                          SOI, FD vs. PDhcl642012/05/01 06:39 AM
                                            PD-SOIDavid Kanter2012/05/02 11:22 AM
                                    SOI, FD vs. PDslacker2012/04/30 07:10 PM
                                      SOI, FD vs. PDDavid Kanter2012/04/30 09:16 PM
                                        SOI, FD vs. PDslacker2012/05/01 09:04 PM
                                          SOI, FD vs. PDDavid Kanter2012/05/02 07:19 AM
                                            SOI, FD vs. PDzou2012/05/02 11:23 AM
                  Previous discussion of clustered MTPaul A. Clayton2012/04/28 06:00 AM
                    Previous discussion of clustered MThcl642012/04/28 08:38 PM
                      Previous discussion of clustered MTDavid Kanter2012/04/30 03:37 PM
                        Previous discussion of clustered MThcl642012/04/30 06:24 PM
                          Previous discussion of clustered MTDavid Kanter2012/04/30 06:40 PM
                            Previous discussion of clustered MThcl642012/05/01 08:15 AM
                              Latency issuesDavid Kanter2012/05/02 11:01 AM
              So, what do people think of these numbers>Megol2012/04/21 12:57 AM
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