150 GFLOP/s measured?

Article: PhysX87: Software Deficiency
By: ? (0xe2.0x9a.0x9b.delete@this.gmail.com), July 27, 2010 11:42 pm
Room: Moderated Discussions
Vincent Diepeveen (diep@xs4all.nl) on 7/27/10 wrote:
---------------------------
>a reader (a@b.c) on 7/22/10 wrote:
>---------------------------
>>it's not easy to pin point why p4 perform so badly on real code.
>
>In general the design sucked ass.
>
>You want to do a shift-right instruction?
>
>Boom 7 cycles penalty.
>
>You wanted a CMOV type instruction (how ELSE to replace a branch?)?

You mean that you fail to imagine how to replace an if-then-else with an other type of instruction than CMOV? You can't be serious! The only explanation of why you have written this sentence seems to me that you want to spread disinformation and false statements in order to keep the general public in stupidity, so that you can claim you are more intelligent.

Considering that you can do the reverse (i.e: replace ANY kind of a complex instruction with a mixture of if-then-else statements and simple bit manipulations) ...

>Boom also BIG penalty.
>
>All sorts of worst cases.
>
>Just give me a chip with 512 pentium3's at 1Ghz at a cheap price.

Yes, that is also what I am wondering about. It was possible to built i386 with 275*1000 transitors. The 8-thread Nehalem has 731*1000*1000 transistors. Why not a chip with 100-1000 simpler x86 cores?

>Nearly no communication between the cores at all, or nearly not at all. No synchronisation
>between caches. Just embarrassingly parallel chip. *nearly* embarrassingly parallel.
>
>Each P3 just its own memory space. Then i can run 128 tasks embarrassingly parallel.
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            150 GFLOP/s measured?Aaron Spink2010/07/08 09:05 PM
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                                        150 GFLOP/s measured?anon2010/07/24 02:36 AM
                                    150 GFLOP/s measured?Vincent Diepeveen2010/07/27 05:37 PM
                                      150 GFLOP/s measured??2010/07/27 11:42 PM
                                        150 GFLOP/s measured?slacker2010/07/28 05:55 AM
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                                            Confusing and not very useful definition?2010/07/22 10:58 PM
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            You are just quoting SINGLE precision flops? OMG what planet do you live? Vincent Diepeveen2010/07/19 10:26 AM
              The prior poster was talking about SP (NT)David Kanter2010/07/19 11:34 AM
                All FFT's need double precisionVincent Diepeveen2010/07/19 02:02 PM
                  All FFT's need double precisionDavid Kanter2010/07/19 02:09 PM
                    All FFT's need double precisionVincent Diepeveen2010/07/19 04:06 PM
                  All FFT's need double precision - notMichael S2010/07/20 01:16 AM
                    All FFT's need double precision - notUngo2010/07/21 12:04 AM
                      All FFT's need double precision - notMichael S2010/07/21 02:35 PM
                      All FFT's need double precision - notEduardoS2010/07/21 02:52 PM
                        All FFT's need double precision - notAnon2010/07/21 05:23 PM
                          All FFT's need double precision - notRicardo B2010/07/26 07:46 AM
                        I'm on a boat!anon2010/07/22 11:42 AM
                        All FFT's need double precision - notVincent Diepeveen2010/07/24 11:39 PM
                          All FFT's need double precision - notslacker2010/07/25 03:27 AM
                            All FFT's need double precision - notRicardo B2010/07/26 07:40 AM
                          All FFT's need double precision - notEduardoS2010/07/25 08:37 AM
                            All FFT's need double precision - notMichael S2010/07/25 10:43 AM
                    All FFT's need double precision - notVincent Diepeveen2010/07/24 11:19 PM
      A bit off baseEduardoS2010/07/08 04:08 PM
        A bit off baseGroo2010/07/08 06:11 PM
          A bit off basejohn mann2010/07/08 06:58 PM
            All right...let's cool it...David Kanter2010/07/08 07:54 PM
    A bit off baseVincent Diepeveen2010/07/19 03:36 PM
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