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Subject: Re: 4,200,000 max kN with Shredder 7.04

Author: Aaron Gordon

Date: 17:18:57 08/17/03

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On August 17, 2003 at 19:05:57, Michael P. Nance Sr. wrote:

>On August 17, 2003 at 17:44:53, Tony Werten wrote:
>
>>On August 17, 2003 at 17:34:14, William Penn wrote:
>>
>>>I've noticed that when running Shredder 7.04 UCI engine in CB Shredder 7 GUI in
>>>infinite analysis mode, there's a problem with the kN and kN/s counters after
>>>the total KN exceeds about 4,200,000. That's not an exact number, but
>>>approximated.
>>
>>I can make the pretty precise gues that problems start after 4,294,967,295
>>nodes.
>>
>>
>>>In any case, kN reverts to zero at that point and begins counting
>>>up again. The value of kN/s also drops to zero then start increasing again (very
>>>slowly). I believe the 7.04 engine continues to work OK, just that counter is
>>>buggy.
>>
>>It's not buggy, it's 32 bit.
>>
>>Tony
>>
>>
>>>WP
>So with 64 bit technology it would go further?

I'm sure all they'd have to do is change the counter from an unsigned int to a
float, double, or 64bit integer and recompile. Any cpu today could display >
2^32 with ease.. so.. no, you wouldn't need a 64bit cpu to be able to do this.



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