AS/400-->iSeries: Upgrading from V3R2 to V5R2 (the rest of y ou can delete this message)

[STWDJJ@flash.net]

Just an FYI.  If you can get one of the new dual 
processors AS/400's that has one processor for batch, 
and one for interactive, you will really see 
PowerHouse run fast.

David Johnson
Stw Inc.
--- Original Message ---
From: "Whittall, Conrad" <Conrad.Whittall@Cognos.COM>
To: "'David Morrison - Corporate'" 
<dmorrison@mcbrideelectric.com>, powerh-
l@lists.swau.edu
Subject: RE: AS/400-->iSeries:  Upgrading from V3R2 to 
V5R2 (the rest of y ou can delete this message)

>Hello David,
>
>I'm not sure about how your performance will work 
out, but I remember
>working with a couple of AS/400 customer many years 
back who both upgraded
>and saw a significant improvement in response times. 
The trick is, as
>always, getting the balance right between the 
interactive and batch pools.
>
>Another good piece of news for you is that, assuming 
you're installing the
>same version of PowerHouse on your new machine, you 
can simply backup your
>PowerHouse application files (PDC dictionary, QUICK 
screens, QUIZ reports,
>and QTP runs) from your old machine and restore them 
to the new one and they
>will run. No recompilation needed. This is because 
the internal format of
>the PowerHouse files is identical, regardless of 
whether PowerHouse is
>running on a CICS or RISC processor-based AS/400 or 
iServer.
>
>IBM did such a good job with the AS/400 hardware 
abstraction layer (HAL) and
>the Integrated Language Environment (ILE) that I seem 
to remember that
>Cognos was very pleasantly surprised when we received 
our first RISC-based
>AS/400, and found that we didn't even have to 
recompile PowerHouse to run on
>the new architectures. So long as certain files 
created by the ILE C
>compiler were included in the installation kit (which 
they were...PowerHouse
>has been built with ILE C since version 5.87), the 
single product could be
>loaded onto either type of machine and run at native 
speed. This is because
>ILE compiles programs for the HAL rather than for a 
specific processor, and
>the system's microcode takes care of translating the 
virtual machine
>instructions into physical hardware instructions. So 
far as I remember this
>is how every piece of software on the AS/400 and 
iSeries servers is
>built...compiled for the HAL and interpreted by the 
microcode for the
>specific processor in the current system. Very 
elegant!
>
>Best regards,
>Conrad
>
>Conrad Whittall
>e-Learning Architect, Global Education Services
>Cognos Incorporated, 3755 Riverside Drive, Ottawa, 
Ontario, K1G 4K9, Canada
>
>-----Original Message-----
>From: David Morrison - Corporate 
[mailto:dmorrison@mcbrideelectric.com]
>Sent: 6 December 2002 12:03
>To: powerh-l@lists.swau.edu
>Subject: AS/400-->iSeries: Upgrading from V3R2 to 
V5R2 (the rest of you
>can delete this message)
>
>
>We're finally getting a new IBM server!  
>
>My question for the user group:  
>
>Have you run into any issues with going from a CISC 
processor to a RISC
>processor?  Is there anything we're going to need to 
do with respect to
>PowerHouse, other than re-compiling our programs?
>
>Our new processor has a much higher overall CPW 
rating than our old
>processor, but most of the "juice" will be going to 
batch processing (mainly
>due to IBM's pricing model).   If the interactive 
portion of the CPW rating
>is less than the total CPW on the old processor, any 
idea what we can expect
>for interactive response?  We've seen Performance 
Monitor graphs that show
>how much better things will be; can we trust that?  
Are there any
>performance issues that we should be aware of here?
>
>Thanks in advance for your feedback.
>
>David Morrison
>McBride Electric
>
>
>**************************************************
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