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Subject: Re: But, Re: Questions re P4 3.03 with HT ??

Author: Matt Taylor

Date: 09:31:46 12/10/02

Go up one level in this thread


On December 10, 2002 at 12:21:33, Robert Hyatt wrote:

>On December 10, 2002 at 11:34:45, Jeremiah Penery wrote:
>
>>On December 10, 2002 at 10:57:40, Robert Hyatt wrote:
>>
>>>On December 10, 2002 at 09:08:10, Vincent Diepeveen wrote:
>>>
>>>>Matt i don't know it for crafty or other crap products. Crafty as we
>>>>see in test needs less nodes when running MT=2,
>>>
>>>I realize this is hard for you to do, but is it _possible_ that you can stick
>>>to _real_ data when you post?  The above is _absolute_ crap.  Crafty does
>>>_not_ "need less nodes when MT=2".  In some positions, yes, but in
>>>more positions it needs _more_.  And for the average case it needs _more_.
>>>
>>>I don't know why you continue to post something that any person here can
>>>refute simply by running the code.  I've done it for you many times.  The
>>>above is false.  Please find something _else_ to wave your hands about.
>>
>>It came from the original data in this thread:
>
>So?  That is over 6 positions.  Using that to prove that a program searches
>"fewer
>nodes with mt=2" is total nonsense, as is the claim that a program +will+ search
>fewer nodes overall using two threads.  It simply doesn't happen.  And it falls
>in
>the same class as the perpetual-motion machine...  It doesn't work...

I like Cold Fusion a little better.

>>Crafty v18.15
>>White(1): bench
>>Running benchmark. . .
>>......
>>Total nodes: 97487547
>>Raw nodes per second: 1160566
>>Total elapsed time: 84
>>SMP time-to-ply measurement: 7.619048
>>White(1):
>>-------------------------------------
>>Crafty v18.15 (2 cpus)
>>White(1): bench
>>Running benchmark. . .
>>......
>>Total nodes: 94658095
>>Raw nodes per second: 1314695
>>Total elapsed time: 72
>>SMP time-to-ply measurement: 8.888889
>>
>>
>>>What is "a buggy crafty?"  And what is the 13-16%?  I posted _real_ data.  You
>>>post fantasy without even having access to a box?  And that is fact???
>>
>>You can see also that the NPS speedup in that above data is 13%.
>
>For _one_ test...  With a version of the program that has a _known_ problem with
>SMT.

You mean the pause issue, or is there more than just that?

-Matt



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