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Subject: Re: hyper-threading at dual xeon 2.8Ghz

Author: Robert Hyatt

Date: 18:12:45 02/23/03

Go up one level in this thread


On February 23, 2003 at 01:38:55, Matt Taylor wrote:

>On February 23, 2003 at 00:39:34, Robert Hyatt wrote:
>
>>On February 22, 2003 at 02:54:21, Vincent Diepeveen wrote:
>>
>>>On February 21, 2003 at 19:49:04, David Weber wrote:
>>>
>>>>what chess programs support hyper-threading
>>>
>>>DIEP, Crafty, Fritz.
>>>
>>>for fritz it speeds up 10% node count at 4 threads at a dual Xeon 2.8Ghz
>>>(compared to HT turned off and 2 threads), but chessbase didn't test yet whether
>>>it actually speeds up search depth (according to Mathias who operates fritz
>>>here).
>>>for shredder it does speed up the node counts but not search depth
>>>so it has SMT/HT turned off here at this tournament and runs with 2 threads at a
>>>dual Xeon 2.8Ghz here.
>>
>>
>>Did you make the necessary changes to spinlocks and spinwaits???
>
>Sorry, can't resist a good laugh!
>
>"No, they're not out yet!"
>
>:-)
>
>-Matt


Forgot about that.  :)




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