On Sat, 4 Nov 2006 15:14:00 -0600, Tom Moulder <[EMAIL PROTECTED]> wrote:

>Begin Quoted E-mail ----------------------------------------------
>
>>then why couldn't the
>>customer buy z/OS and run the software on the machine.
>
>
>You don't "buy" z/OS.  You license it to run on a particular machne.
>
>
>When Amdahl started selling processors, the operating system was free.
>When IBM started to charge for it, they knew how much power an Amdahl
>processor had and where it fit in the pricing structure.  It's harder
>for them to know that with am emulator.  What stops you from putting
>in faster processors, or additional processors?
>
>Tom Marchant
>
>End Quoted E-mail ----------------------------------------------
>
>Excuse me for using the word "buy" -- I knew better that you license
>software.

As I said, you license the software for *a particular machine.*
That's the relevant phrase.  You had suggested buying it and
running it on another platform, which would be a violation of
the licensing terms.
>
>Upgrades have always been an issue in the "z" environment, now others are
>taking note of this and trying to do the same things for other platforms.
>So, there are a lot of devil in the details.  Like how PSI would handle the
>CPU serial number and upgrades to the processor number and speed.  I suppose
>they could change the serial number on an upgrade and force the customer to
>deal with IBM since the software is licensed to a CPU.
>

As you say, the devil is in the details.  You've avoided the
question that I asked, so I'll ask it again with emphasis.
What stops *you* from putting in faster processors, or
additional processors?  I didn't ask about PSI upgrading the
underlying hardware.

Of course, PSI could, in principle, provide the same sort of
processor capacity information to the operating system that
modern hardware provides.  Then, if you put in additional or
faster processors, the MSU rating would be provided to MVS.
This would be a non-trivial thing to do accurately due to the
number of variables involved in system performance.

-- 
Tom Marchant

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