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Subject: Re: Impact of disk performance in endgames

Author: Dann Corbit

Date: 12:47:04 07/15/02

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On July 15, 2002 at 15:27:41, Anthony Cozzie wrote:

>Bandwidth isn't really the issue here. Latency is.
>
>The problem is that you are pulling tiny little bits of information from all
>over the disk.  The SCSI drive spins faster, so it has a lower seek time.

I disagree.  Often, when I view the statistics for two chess engines that have
been playing a long time in the endgame, I see that hundreds of gigabytes have
been read by both engines.  99.99% of that I/O is from EGTB reads.  So I think
that the transfer rate is at least as important, if not more important, than the
seek time.  But I have no way to benchmark the differences in time for the
different stages of a read, so I cannot be sure.



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