RE: LPAR & DB2 SMP

[Michael Oakes <Michael.Oakes@xxxxxxxxx>]

Thanks Andy,
        The application mix we run makes great use of Query.

        I was thinking that I would have to install SMP into each partition,
which could potentially have multiple processors, and was glad you confirmed
this.

When moving processor resource from one partition to another. How would SMP
handle the dynamic addition and subtraction of processors at V5R1?

Would it be the next timeslice of a job running that the SMP would be
enabled for that job. Or, would a job already running not benefit from the
addition of more processors?

Does anyone knows of a web page or redbook that discusses this at V5R1 ?

Many thanks Michael.

-----Original Message-----
From: Andy Nolen-Parkhouse [mailto:aparkhouse@mediaone.net]
Sent: 16 August 2001 11:22
To: midrange-l@midrange.com
Subject: RE: LPAR & DB2 SMP


Michael,

Each partition will have its own copy of the OS.  You will only need to
install SMP in the partition with multiple processors.  You only need
SMP if you wish to devote multiple processors in that partition to a
single database query.

What is the business use of the machine?  There are some benefits to not
allowing database work to exceed a single processor if other tasks need
to be accomplished concurrently.  Is this a data warehouse of some kind?

Andy Nolen-Parkhouse

> I am currently preparing an upgrade for a uni processor to a 8xx multi
> processor system. I had already determined that I would install DB2
SMP
> when
> the system went to a multi processor system.(no thoughts on requiring
LPAR
> at the time)
> 
> Now I have a changed configuration which will include one managing
> partition
> and three further partitions. One which will have multiple processors,
and
> the others partial processors all at V5R1.
> 
> Would I need DB2 SMP at all?
> 
> If so, do I need to install it in to just the managing partition, or
what
> combination?
> 
> Any assistance gratefully appreciated.
> 
> Michael Oakes

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