Edward Jaffe wrote:

> Agreed 100%. There is no difference between the engines on
> full-capacity models. There is no "special" optimization of any kind.
> An engine is an engine. They run exactly the same instructions
> through exactly the same instruction pipeline in exactly the same way.

C'mon Ed, you know that ain't true - at least one exception already
exists. Try IPL'ing z/OS native on one of your IFLs.
Different [micro,milli,macro]-code and the fact that they are now
"pooled" certainly allows for the prospect of such optimization without
the users being any the wiser. Maybe in the future, maybe already.

Shane ...

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