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Subject: Re: Opteron Specifics

Author: Jay Urbanski

Date: 15:44:44 07/02/03

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On July 01, 2003 at 04:30:50, Roberto Nerici wrote:

>On July 01, 2003 at 02:01:13, Russell Reagan wrote:
>
>>On July 01, 2003 at 01:48:25, Luis Smith wrote:
>>
>>>I believe Robert Hyatt said Crafty was 64 bit from the first day he ported it
>>>over to C from Cray, but I could be wrong...
>>
>>I think he means that he wants a version of Crafty that is compiled specifically
>>for the Opteron's 64-bit capabilities, rather than running a 32-bit version on
>>the 64-bit hardware.
>
>Yes, I agree, and that is the important distinction. There have recently been a
>number of posts (not surprisingly) regarding Opterons/Athlon 64s and Crafty and
>SPECmarks etc, but sometimes 32bit figures are being quoted and sometimes 64bit
>ones.
>
>Right now most of us can't do much with a 64 bit version, but I think those are
>the interesting figures. I want to know what difference the 64 bit code makes,
>and then I can spend the next x years looking forward to seeing the difference
>myself...
>
>Roberto/.

I'll run SPECINT for Opteron compiled with PGI's 64-bit compiler and post the
results in a few days.



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