Re: "IBM i Modernization" & PASE

[Charles Wilt <charles.wilt@xxxxxxxxx>]

Another old article...
http://www.itjungle.com/tfh/tfh022105-story02.html

"The third-generation TCP/IP stack IBM created for OS/400 is actually the
TCP/IP stack from AIX running inside PASE."

So unless you're running twinax or something from before v5r1...your "ILE
only" solutions are in fact ILE + PASE.

Charles


On Thu, Dec 1, 2016 at 2:21 PM, Charles Wilt <charles.wilt@xxxxxxxxx> wrote:

> On Thu, Dec 1, 2016 at 1:44 PM, Nathan Andelin <nandelin@xxxxxxxxx> wrote:
>
> > I view IBM i and PASE as essentially separate and distinct operating
> > systems (or environments). They both run on Power. They're packed
> > together.
> > But the runtime interfaces and characteristics are about the same as
> > running two separate partitions on a single hypervisor.
>
>
> ​That's a easy way of looking at it.  But it's not really even close to
> correct as I understand it.
>
> I don't recall all the details, nor where I picked them up (perhaps the
> Fortress book).  But​ as I understand it, PASE is neither separate nor
> distinct from IBM i.
>
> Here's an old article, http://www.ibmsystemsmag.com/ibmi/
> developer/general/Running-AIX-Applications-with-the-Help-of-
> i5-OS-PA/?page=1 With an old diagram http://www.ibmsystemsmag.com/
> getattachment/b44d4a03-a8fe-4c99-9282-be6c6b14ea62/
>
> The important part, "Unlike running UNIX applications in a separate Linux
> or AIX partition, i5/OS PASE applications utilize the same underlying i5/OS
> support as every other i5/OS application."
>
> I look at it this way, there are (at least) 4 environments on my IBM i
> OPM - runs Original Program Model programs
> EPM - runs Extended Program Model programs
> ILE - runs Integrated Language Environment programs
> PASE - runs AIX programs
>
> Assuming EPM is still valid...you apparently can't get the compilers
> anymore.  But the STREPMENV command is still there in v7.2 so I assume EPM
> programs still work.
>
> IBM is of course pushing folks toward ILE and PASE as opposed to OPM or
> EPM.
>
> I think you're doing yourself a disservice by dismissing PASE applications.
>
> Charles