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Subject: Re: Since the CPU is what really count for Chess !

Author: Matt Taylor

Date: 09:58:07 03/19/03

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On March 18, 2003 at 23:11:35, Robert Hyatt wrote:

>On March 18, 2003 at 20:22:33, Jeremiah Penery wrote:
>
>>This exact discussion has taken place here at least twice before.  I'm not sure
>>why Bob persists with his 120ns number, but no amount of convincing or data is
>>going to change his mind.
>
>
>Would you care to post some _exact_ data that disproves 120ns?  Did you see
>Matt's number in the post parallel to yours?  Using current DDR ram speeds?
>
>So your "no amount of convincing" leaves me cold.  "no amount of data" has yet
>been presented to show any machine with < 100ns latency.  Feel free to disprove
>it but post your code.  Any old sloppy C code won't do, the code has to be
>written to test latency, not prefetching or cache reuse.

I used registered DDR which is slower, and being on SMP it will also be slower.
It is conceivable that someone has ~100 ns latency. I'll try running the
benchmark later on my nForce 2 board w/pc2100 CL 2.5 non-registered ram.

-Matt



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