ISSCC Poulson Preview Online - OoO not unlikely?

Article: New Itanium Microarchitecture at ISSCC 2011
By: anonymous (no.delete@this.spam.com), November 19, 2010 2:17 am
Room: Moderated Discussions
>I guess you are ignorant of the fact that IA64 includes
>means for the compiler to associate hints about the
>spacial and temporal locality of the data associated
>with each load and store instruction as well as specify
>the degree of ordering strictness required between sets
>of memory transfers. These features, AFAIK unique to
>IA64, allow conflict and capacity misses to be reduced
>as well as avoiding stalls from hardware enforcement
>of unnecessary memory ordering.

The compiler can only annotate loads and stores for
which it managed to tell or predict locality. And hey,
in real life loads and stores do depend on input data
which simply is not available at compile time, period.

Also, a compiler that manages to gain locality insight
can issue prefetches for desired addresses and cache
levels, use non-temporals, etc. on e.g. x86 -- IA64 is
certainly not the only ISA which lets you do this stuff.

>It is funny how negative opinion of IA64 is so highly
>correlated with degree of sheer ignorance about it. ;^)

Maybe ignorance about IA64 correlates with its success?
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ISSCC Poulson Preview OnlineDavid Kanter2010/11/17 03:40 AM
  ISSCC Poulson Preview Onlinesavantu2010/11/17 05:25 AM
  ISSCC Poulson Preview Onlinesomeone2010/11/17 08:51 AM
    ISSCC Poulson Preview OnlineLinus Torvalds2010/11/17 09:27 AM
      ISSCC Poulson Preview Onlinesomeone2010/11/17 10:31 AM
        ISSCC Poulson Preview OnlineRichard Cownie2010/11/17 10:55 AM
          ISSCC Poulson Preview OnlineLinus Torvalds2010/11/17 11:30 AM
          ISSCC Poulson Preview Onlinesomeone2010/11/17 11:42 AM
            ISSCC Poulson Preview Onlinea reader2010/11/17 02:07 PM
        ISSCC Poulson Preview OnlineGabriele Svelto2010/11/19 02:52 AM
          ISSCC Poulson Preview Onlinesavantu2010/11/19 05:37 AM
    ISSCC Poulson Preview OnlineDavid Kanter2010/11/17 12:12 PM
      ISSCC Poulson Preview Onlinesomeone2010/11/17 12:40 PM
        ISSCC Poulson Preview OnlineDavid Kanter2010/11/17 02:08 PM
          ISSCC Poulson Preview Onlineajensen2010/11/18 01:24 AM
  ISSCC Poulson Preview Onlinelubemark2010/11/17 09:52 AM
  ISSCC Poulson Preview Online - OoO not unlikely?anon2010/11/17 11:41 AM
    ISSCC Poulson Preview Online - OoO not unlikely?Linus Torvalds2010/11/17 12:12 PM
      ISSCC Poulson Preview Online - OoO not unlikely?anon2010/11/17 05:38 PM
        ISSCC Poulson Preview Online - OoO not unlikely?Linus Torvalds2010/11/17 08:03 PM
    ISSCC Poulson Preview Online - OoO not unlikely?someone2010/11/17 12:14 PM
      ISSCC Poulson Preview Online - OoO not unlikely?Richard Cownie2010/11/17 02:07 PM
        ISSCC Poulson Preview Online - OoO not unlikely?someone2010/11/17 02:59 PM
          ISSCC Poulson Preview Online - OoO not unlikely?sylt2010/11/17 03:26 PM
          ISSCC Poulson Preview Online - OoO not unlikely?anon2010/11/17 05:53 PM
            ISSCC Poulson Preview Online - OoO not unlikely?someone2010/11/17 08:34 PM
              ISSCC Poulson Preview Online - OoO not unlikely?anon2010/11/17 09:22 PM
              ISSCC Poulson Preview Online - OoO not unlikely?Martin Høyer Kristiansen2010/11/18 12:35 AM
                ISSCC Poulson Preview Online - OoO not unlikely?anon2010/11/18 01:14 AM
                  ISSCC Poulson Preview Online - OoO not unlikely?Martin Høyer Kristiansen2010/11/18 02:00 AM
          ISSCC Poulson Preview Online - OoO not unlikely?Groo2010/11/18 03:28 PM
            ISSCC Poulson Preview Online - OoO not unlikely?someone2010/11/18 09:30 PM
              ISSCC Poulson Preview Online - OoO not unlikely?Doug Siebert2010/11/19 12:06 AM
                ISSCC Poulson Preview Online - OoO not unlikely?someone2010/11/19 07:52 AM
                  Negativity and ignorancePaul A. Clayton2010/11/19 06:11 PM
                  rhetoricshobold2010/11/20 05:01 AM
              ISSCC Poulson Preview Online - OoO not unlikely?anonymous2010/11/19 02:17 AM
                ISSCC Poulson Preview Online - OoO not unlikely?someone2010/11/19 08:22 AM
                  ISSCC Poulson Preview Online - OoO not unlikely?Linus Torvalds2010/11/19 09:26 AM
                    ISSCC Poulson Preview Online - OoO not unlikely?someone2010/11/19 11:04 AM
                      ISSCC Poulson Preview Online - OoO not unlikely?Linus Torvalds2010/11/19 11:24 AM
                        ISSCC Poulson Preview Online - OoO not unlikely?someone2010/11/19 12:05 PM
                          ISSCC Poulson Preview Online - OoO not unlikely?Linus Torvalds2010/11/19 01:08 PM
                            ISSCC Poulson Preview Online - OoO not unlikely?someone2010/11/20 11:02 AM
                              ISSCC Poulson Preview Online - OoO not unlikely?dc2010/11/20 12:59 PM
                              ISSCC Poulson Preview Online - OoO not unlikely?dc2010/11/20 01:01 PM
                                ISSCC Poulson Preview Online - OoO not unlikely?rwessel2010/11/20 01:27 PM
                                  ISSCC Poulson Preview Online - OoO not unlikely?dc2010/11/21 05:00 PM
                                    single-system single-location != RASanonymous2010/11/21 09:33 PM
                                      single-system single-location != RASdc2010/11/25 12:06 PM
                                        single-system single-location != RASDavid Kanter2010/11/25 01:58 PM
                    CS:SNAREPslacker2010/11/20 04:07 AM
                      CS:SNAREPnone2010/11/20 04:53 AM
                        CS:SNAREPS. Rao2010/11/20 11:20 AM
                      CS:SNAREPGabriele Svelto2010/11/22 07:11 AM
                  ISSCC Poulson Preview Online - OoO not unlikely?anon2010/11/19 11:08 AM
                    ISSCC Poulson Preview Online - OoO not unlikely?someone2010/11/19 06:51 PM
                      ISSCC Poulson Preview Online - OoO not unlikely?rwessel2010/11/20 01:53 AM
                        ISSCC Poulson Preview Online - OoO not unlikely?dc2010/11/20 12:43 PM
                          ISSCC Poulson Preview Online - OoO not unlikely?anon2010/11/20 05:43 PM
                            ISSCC Poulson Preview Online - OoO not unlikely?Foo_2010/11/20 05:56 PM
              ISSCC Poulson Preview Online - OoO not unlikely?Groo2010/11/20 12:59 PM
                P = E/tslacker2010/11/20 11:31 PM
                  P = E/tAndi Kleen2010/11/21 03:02 AM
                ISSCC Poulson Preview Online - OoO not unlikely?someone2010/11/21 10:24 AM
                  ISSCC Poulson Preview Online - OoO not unlikely?Richard Cownie2010/11/21 01:07 PM
                    ISSCC Poulson Preview Online - OoO not unlikely?someone2010/11/21 04:50 PM
                      ISSCC Poulson Preview Online - OoO not unlikely?Richard Cownie2010/11/21 05:38 PM
                        ISSCC Poulson Preview Online - OoO not unlikely?someone2010/11/21 06:27 PM
                          ISSCC Poulson Preview Online - OoO not unlikely?Richard Cownie2010/11/22 08:37 AM
                            ISSCC Poulson Preview Online - OoO not unlikely?someone2010/11/22 09:07 AM
                              ISSCC Poulson Preview Online - OoO not unlikely?Richard Cownie2010/11/22 09:25 AM
                                ISSCC Poulson Preview Online - OoO not unlikely?dc2010/11/25 12:22 PM
                                  ISSCC Poulson Preview Online - OoO not unlikely?Richard Cownie2010/11/26 10:44 AM
                              perfAM2010/11/24 03:28 AM
                                perfajensen2010/11/24 03:46 AM
                                perfsomeone2010/11/24 09:59 AM
                          OOOE and energy efficiencyDavid Kanter2010/11/23 11:28 AM
                            OOOE and energy efficiencysomeone2010/11/23 12:42 PM
                              OOOE and energy efficiencyDavid Kanter2010/11/23 06:00 PM
                                OOOE and energy efficiencyajensen2010/11/24 01:58 AM
                                  OOOE and energy efficiencyRichard Cownie2010/11/24 10:44 AM
                                    OOOE and energy efficiencyajensen2010/11/24 01:51 PM
                                      OOOE and energy efficiencyRichard Cownie2010/11/24 02:59 PM
                                        OOOE and energy efficiencyajensen2010/11/25 12:20 AM
                              OOOE and energy efficiencyChuck2010/11/23 10:04 PM
    ISSCC Poulson Preview Online - OoO not unlikely?ajensen2010/11/18 12:48 AM
  ISSCC Poulson Preview OnlineMatt Waldhauer2010/11/17 11:50 AM
    ISSCC Poulson Preview OnlineDavid Kanter2010/11/17 12:21 PM
    ISSCC Poulson Preview Onlinesomeone2010/11/17 12:51 PM
      ISSCC Poulson Preview OnlineMatt Waldhauer2010/11/18 07:38 AM
    ISSCC Poulson Preview OnlineDan Downs2010/11/18 10:15 AM
      ISSCC Poulson Preview OnlineMatt Waldhauer2010/11/23 03:19 AM
  OoOE IPFajensen2010/11/22 02:12 AM
    OoOE IPFanon2010/11/22 03:24 AM
      OoOE IPFajensen2010/11/22 03:46 AM
  ISSCC Poulson Preview Online- Abstractlubemark2010/11/22 08:02 AM
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      ISSCC Poulson Preview Online- AbstractDavid Kanter2010/11/22 11:08 AM
      Cache sharingPaul A. Clayton2010/11/22 01:42 PM
  ISSCC Poulson Preview OnlineTwelve2011/03/23 01:32 PM
    ISSCC Poulson Preview OnlineDaniel Bizó2011/03/24 06:23 AM
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