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Subject: Re: crafty on Athlon 64

Author: Matt Taylor

Date: 17:15:01 12/30/02

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On December 30, 2002 at 19:19:00, Vincent Diepeveen wrote:

>On December 30, 2002 at 19:13:36, Bob Durrett wrote:
>
>>On December 30, 2002 at 12:23:59, Vincent Diepeveen wrote:
>>
>>>On December 30, 2002 at 11:55:51, Sean Mintz wrote:
>>>
>>>>I'm interested to know if they compiled crafty for 64 bits. I doubt that because
>>>>the 32 bit athlons running at the same speed get around 650. That's a 25%
>>>>increase. Isn't this the improvement they said we would get from running 32 bit
>>>>applications on the athlon 64? Anyone else have any ideas?
>>>
>>>Of course it was a 64 bits compile. They are not idiots. they have a multi
>>>billion dollar reason to compile it for 64 bits.
>>>
>>>Rethink your statement!
>>>
>>>Suppose someone from the testdepartment then tells his boss that the
>>>billions of investments into their 64 bits cpu were shown a bit worse
>>>because they only ran software in 64 bits.
>>>
>>>How many seconds before entire testdepartment is fired?
>>>
>>>0.01 if i was that manager.
>>>
>>>Of course the testdepartment optimized the executable as far as they could
>>>for the 64 bits processor. Anything that was possible until now has been done
>>>let me assure you that.
>>>
>>>The fastest executables with production compilers can be found at specint
>>>of course. Only beta versions of copmilers which didn't make it into the
>>>mainstream are possibly not allowed to get used for specint (which is
>>>a good thing).
>>>
>>>So if there is anything out there yet that allows to compile crafty to
>>>64 bits somehow, be sure they used it.
>>>
>>>Best regards,
>>>Vincent
>>
>>Vincent, please forgive me for saying this, but:
>>
>>You have not presented one shread of evidence to prove that they used 64 bit.
>>All you have presented is sheer speculation!
>>
>>What are the FACTS?  Do you have any?
>>
>>Sorry about that, but someone had to say it.
>>
>>Bob D.
>
>As you can see in specint the different companies which earn billions with
>processors will of course let their processor look like the best. They optimally
>prepare the software for their processor like they want to, of course under the
>rules there are.
>
>That means in short that it is more than naive to suppose they are not using 64
>bits when it can speed them up.
>
>There is billions at stake here.
>
>Please do not tell me the companies are idiots in this sense.
>
>Best regards,
>Vincent

Yes, but I didn't see any evidence that AMD ran the benchmark either. From what
I could tell, it seemed like a 3rd party got a Clawhammer sample and ran the
benchmark.

I'm sure AMD wants to look good -- but do other people care as much about AMD's
reputation?

-Matt



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