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Subject: Re: Opteron vs. XP

Author: Tom Kerrigan

Date: 18:25:09 06/30/03

Go up one level in this thread


On June 30, 2003 at 21:16:35, Sune Fischer wrote:

>On June 30, 2003 at 21:13:21, Tom Kerrigan wrote:
>
>>On June 30, 2003 at 21:11:06, Sune Fischer wrote:
>>
>>>On June 30, 2003 at 20:51:58, Tom Kerrigan wrote:
>>>
>>>>On June 29, 2003 at 16:57:02, Sune Fischer wrote:
>>>>
>>>>>On June 29, 2003 at 16:08:02, Jeremiah Penery wrote:
>>>>>
>>>>>
>>>>>>>Measuring specint for a new chip using a compiler that in effect cripples it, is
>>>>>>>not only incompetent, it's misleading, IMO.
>>>>>>
>>>>>>If it's incompetent to use a compiler that makes faster binaries than another
>>>>>>compiler, then I think you can call everyone incompetent.
>>>>>
>>>>>Well yes, it is.
>>>>>
>>>>>If Carl Lewis has a broken leg, we should postpone the race until he is back in
>>>>>shape, anything else will just be a race with a broken leg.
>>>>>
>>>>>It is however amazing how fast the chip is running, even with it being on
>>>>>crutches.
>>>>>
>>>>>-S.
>>>>
>>>>It is not on crutches. The x86-64 ISA is more or less the same as the x86-32
>>>>ISA.
>>>>
>>>>-Tom
>>>
>>>Seeing is believing.
>>>
>>>If I'm not mistaken the specint uses Crafty as an integer benchmark, obviously
>>>this is 64-bit *integer*, hence huge difference between 332 abd 64 bit, hence
>>>the whole thing is more or less rediculous.
>>>
>>>-S.
>>
>>What would you suggest? That AMD retract its SPEC submissions and ask vendors
>>not to make SPEC submissions until performance of 64-bit binaries on the Opteron
>>is to your liking? Sure. That'll boost sales.
>
>Ah I see, you think running 32 bit binaries is testing a 64 bit chip, hurray for
>progress - why did AMD even bother?
>
>-S.

Chicken and egg. 64 bit is obviously good (that's why they bothered) but the
chip has to be available for a while for people to take advantage of 64 bit.
Until then, its 32 bit performance is what's interesting to users (and what's
accurately measurable).

-Tom



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