Re: Have you read this?

["Simon Yi" <simonyi@xxxxxxx>]

-----Original Message-----
From: Don <dr2@cssas400.com>
To: leif@attglobal.net <leif@attglobal.net>
Cc: MIDRANGE-L@midrange.com <MIDRANGE-L@midrange.com>
Date: Thursday, January 13, 2000 1:37 AM
Subject: Re: Have you read this?


>
>
>Leif,
>
>since we're dealing down in this area of functionality limited by the CPU,
>isn't there a governor process that basically dummies down the CPU or
>makes it idle cycles to allow for performance differences between models?
>
>Seems like I heard something back a while ago (unconfirmed!) that alot of
>the boxes shipped are in effect using the same CPU but have this governer
>tweeked to basically disallow one from getting the full performance and
>forcing one to buy more stuff...  IN THEORY, as I was once told, if you
>could tweek this governor, you could open the cpu wide open for full
>performance...
>
>Comments?
>
>Don in DC
>
>---------
>
>On Wed, 12 Jan 2000 leif@attglobal.net wrote:
>
>> > except that on some (all?) AS/400 models, the PowerPC floating point
>> > unit is disabled while running OS/400. So the calculations would run
>> > very slowly with emulated floating point operations.
>> > ---------------
>> > I find it a little difficult to believe that Rochester would design
what
>> they
>> > call "IBM's fastest floating point processor" for the old Muskie chip
sets
>> and
>> > then turn the thing off in all of those 530 and 53S machines.  Maybe
the
>> FPU's
>> > are turned off in low-end machines - that would be about par for the
way
>> IBM
>> > screws us over to create their bloody "price points" - but in all
models?
>> That
>> > doesn't seem reasonable.
>>
>> I have actually only confirmed this on low-end modes. I don't know about
>> the high-end (that why the 'all' had a ? next to it). I was hoping from
some
>> input from IBM lurkers on this.
>>
>> About the fast FPU, don't forget that it is also used on AIX.
>>
>>
>>
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>
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