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Subject: Re: Simple quad-opteron test

Author: Dann Corbit

Date: 17:00:57 12/03/03

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On December 03, 2003 at 19:54:45, Mike Siler wrote:

>On December 03, 2003 at 14:59:03, Robert Hyatt wrote:
>
>>===================== 1 seconds per position========================
>>average search depth..............         4.5
>>===================== 5 seconds per position========================
>>average search depth..............         5.6
>>=====================10 seconds per position========================
>>average search depth..............         4.6
>
>Why would the average search depth increase and then decrease as time increases?

SMP (or NUMA) searches often stumble onto the right answer in a somewhat random
fashion.  A worker thread might try a fortunate path early.

Probably, there will be a lot of randomness, but it will stay somewhere around
5.



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