Re: SFTP Question

LOL, Vern. I believe there are relevant distinctions between IBM i and PASE
that more people, particularly developers should be aware of. The same
would be true if say Microsoft were to port Windows to run on Power 8
processors.

PASE and IBM i are joined at the hypervisor level in the SLIC, and below
that at the Power chip level. Otherwise they are quite separate. PASE runs
on top of the "syscall" interface, while IBM i runs on top of the
"technology independent machine interface". PASE does not receive the
benefits of single-level store, nor the assurance that your applications
will run on new hardware.

Below the SLIC, the hypervisor switches between two distinct processor
modes, one for running PASE workloads, and another for running IBM i
workloads. The "switching" is comparable to that which results from having
multiple partitions running simultaneously.

Up in the application layer, it takes a lot of work and overhead for PASE
applications to communicate with IBM i applications, and visa versa. The
overhead is similar to communicating between Unix / Linux workloads and IBM
i workloads, which are running on completely separate hardware.

I acknowledge the benefit of joining these environments on shared hardware.
On the other hand, I find it silly for an organization to refuse say a
third party SFTP client which runs "natively" on IBM i, and favoring one
that runs in PASE.



On Fri, Mar 11, 2016 at 12:46 PM, Vernon Hamberg <vhamberg@xxxxxxxxxxxxxxx>
wrote:

LOL - this is maybe a distinction without a difference, since IBM are
making a strong point of using something in PASE instead of taking time and
personnel to write it in "native" IBM i.

We already have Java running there, and the C/C++ compiler, IIRC.

Add to that the 5733-OPS "product" offering - is that the licensed product
designation for the open source stuff?

I know you said "like", Nathan - still, it's not a Linux anything - and it
is an AIX environment, not a full-blown installation, as you know, I'm sure.

There are no commands to run things in an AIX or Linux LPAR directly -
there are to run things in PASE.

Admittedly, all this does get kind of confusing. And I prefer that the IBM
i developers concentrate on what is more important, the native stuff,
rather than take time to port and rewrite everything else.

Of course, this is only my own opinion as to whether it is "IBM i" - IBM
seem to be thinking of PASE as part of IBM i.

Regards
Vern


On 3/11/2016 12:19 PM, Nathan Andelin wrote:

That definition would include the sftp option they're using!

Good point. PASE is more like running a second AIX/Linux partition on a
Power server. It's not really "IBM i". There are fundamental and relevant
distinctions

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