RE: new power7+ models, # of threads

[Matt Olson <Matt.Olson@xxxxxxxx>]

Yeah understood, all OS's these days do that and all databases do that today.  I'm talking about individual applications utilizing multiple cores.  

For instance I'm not sure how you right a massively parallel processing RPG program like you can do in other programming languages.

-----Original Message-----
From: Mark S Waterbury [mailto:mark.s.waterbury@xxxxxxxxxxxxx] 
Sent: Wednesday, February 06, 2013 11:43 AM
To: Midrange Systems Technical Discussion
Subject: Re: new power7+ models, # of threads

Matt:

The operating system (IBM i or OS/400) can take advantage of multiple cores, for example, when running multiple jobs simultaneously, in different job queues or in the same, multi-threaded job queue. Also, various IBM program products take advantage of multiple cores and multiple threads.  For example, DB2 can take advantage of multiple threads when processing queries, etc.

So, even though your applications might not be written to directly exploit multiple threads, does not mean that there may be some benefits to having more than one processor core available.

Also, the *JOBD contains an attribute "Allow multiple threads" that you can use to allow a batch job to use mulitple threads. But the programs must be designed and written to take advantage of multiple threads.

HTH,

Mark S. Waterbury

> On 2/6/2013 11:11 AM, Matt Olson wrote:
> Isn't this entirely dependent on whether or not the software you are using is even taking advantage of multi-threading?  Not all software does, and good luck finding out if it is.  It's easy to see if a process / software is using multiple cores in other environments, I have no clue how you would on the i.
>
> I think the real question you should be asking, is: "Does software x,y,z utilize multiple cores/threads".
>
> -----Original Message-----
> From: Gqcy [mailto:gmufasa01@xxxxxxxxx]
> Sent: Wednesday, February 06, 2013 10:08 AM
> To: midrange-l@xxxxxxxxxxxx
> Subject: Re: new power7+ models, # of threads
>
> wow...
> is my supposition correct in that my power 5+ is running 2 threads, since I have 2 "processors" active?
>
>
>
>
> On 2/6/2013 10:03 AM, Nathan Andelin wrote:
> > > If I get a new 720+, and activate 2 cores, I can have
> > > 4 threads?
> >
> >
> > http://www-03.ibm.com/systems/power/hardware/720/perfdata.html
> >
> >
> > Same chart. 4 threads per core times 2 cores = 8 threads.
> >
> > -Nathan
> --
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