Re: IOPless machines and multiple CPUs

[Jim Oberholtzer <midrangel@xxxxxxxxxxxxxxxxx>]

Patrik:

I think you are mixing cores and CPU.   One CPU has multiple cores.   IBM i
is licensed by the core.

That said, at one time IBM produced the answer to your question (about the
time of P6 to P7 in a series of articles.

Here are functions that do share cores (query with DB2 multisystem comes to
mind) but not all functions do.


Best to find that IBM documentation.

On Sun, Jul 26, 2020 at 10:39 AM Patrik Schindler <poc@xxxxxxxxxx> wrote:

> Hello,
>
> imagine a newer POWER machine with, say, four CPUs. IBM i is licensed to
> one CPU, so I guess when you give the LPAR more than one, it won't be used
> for running "normal" code. Right?
>
> Does anybody know (and provide evidence) if a second assigned CPU will be
> used as "helper CPU" for I/O? Not exactly an IOP, since this involves
> drivers and other stuff. My thinking stems from the z-world where
> processors can be freely configured to specialized tasks (I/O, running
> Linux, running Java, …). The number of CPUs often influences licensing
> cost, which probably was one of the reasons to invent this feature in the
> first place.
>
> Thanks!
>
> :wq! PoC
>
> PGP-Key: DDD3 4ABF 6413 38DE - https://www.pocnet.net/poc-key.asc
>
>
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