On Wed, Sep 7, 2016 at 7:27 AM, Scott Ford <[email protected]> wrote:

> Gil,
>
> I agree, why was zxxP engines developed?  I assume for Java like code or ?
>

​From what I remember, the "specialty" engines ​are a marketing gimmick. In
particular, the zAAP was created to allow people to run Java on z/OS
without incurring the software costs that they would have if they have if
they had to increase their MSUs on GP engines to do so. This was to sell
WebSphere Application Server (a Tomcat like environment) when IBM was
strongly pushing the "you can run your Java Enterprise software on z/OS
instead of on Intel" idea. That gave rise to the other specialty engines.
IMO, the best specialty engine is the IFL to run zLinux without increasing
your z/OS software costs. Linux on z would have died if it were tied to
normal GPs. Mainly due to the "CEC MSU" pricing that some software vendors
use. Imagine the cost if you dedicate 3 CPs to Linux, but had to pay your
z/OS vendors as if you were using them for z/OS because "well, you _could_
do so, so we will charge you because we are assuming that you are doing
so." I hate the current software pricing. And, no, I don't have a genius
idea for something better.



>
> Scott
>
>

-- 
Unix: Some say the learning curve is steep, but you only have to climb it
once. -- Karl Lehenbauer
Unicode: http://xkcd.com/1726/

Maranatha! <><
John McKown

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