/MartinPacker
From:
Jon Butler butl...@us.ibm.com
To:
IBM-MAIN@listserv.ua.edu,
Date:
07/24/2012 07:24 PM
Subject:
Re: Help with elementary CPU speed question
Sent by:
IBM Mainframe Discussion List IBM-MAIN@listserv.ua.edu
There was a 3090-180J uni that was rated at 23.5. The 3090-300J (3+3
Mike Ward writes:
This is one area where I really have a problem. It used to be
back in the 370 days that if a machine was rated at 50 mips and
you moved up to 100 mips you really noticed the difference in
execution time I know I'm on a rant
Was there even a 100 MIPS uniprocessor model in
Of Charles Mills
Sent: Tuesday, July 17, 2012 8:53 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Help with elementary CPU speed question
I have gotten dragged into a CPU performance question; a field I know little
about.
I run a test on a 2094-722. It is rated at 19778 SU/Second. The job consumes
mw...@ssfcu.org (Ward, Mike S) writes:
This is one area where I really have a problem. It used to be back in
the 370 days that if a machine was rated at 50 mips and you moved up
to 100 mips you really noticed the difference in execution time. Today
if you have a 100 mip machine (I know they're
, 2012 11:44 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Help with elementary CPU speed question
mw...@ssfcu.org (Ward, Mike S) writes:
This is one area where I really have a problem. It used to be back in
the 370 days that if a machine was rated at 50 mips and you moved up
to 100 mips you really
: Help with elementary CPU speed question
On Wed, 18 Jul 2012 18:47:13 -0400, Dave Barry wrote:
In theory, you divide the rated SU/second by the number of processors
giving SUs/processor/second, adjusting for MP effect overhead.
No, the SU/second is called the SRM constant and it is used to convert
In
985915eee6984740ae93f8495c624c6c21e5c49...@jscpcwexmaa1.bsg.ad.adp.com,
on 07/17/2012
at 12:04 PM, Farley, Peter x23353 peter.far...@broadridge.com
said:
t SHOULD NOT be necessary to have considerable statistical prowess
or have access to DCOLLECT output (which most normal application
Another problem with Peter Farley's formulation of this issue is his
use of the phrase normally skilled professional application
programmer. The question just what skills such a person should have
is controversial. The question what skills they do in fact usually
have is less so.
A great figure
:53 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Help with elementary CPU speed question
I have gotten dragged into a CPU performance question; a field I know little
about.
I run a test on a 2094-722. It is rated at 19778 SU/Second. The job consumes
.146 CPU seconds total.
I run the same job
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Help with elementary CPU speed question
As has been pointed out, there are many IBM tools such as zPCR that you can
download to help with this exercise. The tools require either a good estimate
or RMF data from the LPARs to give you an accurate
Steve Finch
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of Charles Mills
Sent: Wednesday, July 18, 2012 2:46 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Help with elementary CPU speed question
Jon, thanks for the thoughtful reply
Steve
For my sins, I started work in an industrial research laboratory.
One time the laboratory was having some sort of open day[1] and one of my
colleagues had a printed card announcing the rate of migration of chlorine ions
through magnetite which must have had some bearing upon the
I have gotten dragged into a CPU performance question; a field I know little
about.
I run a test on a 2094-722. It is rated at 19778 SU/Second. The job consumes
.146 CPU seconds total.
I run the same job on a 2064-2C3. It is rated at 13378 SU/Second. All other
things being roughly equal,
Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of Charles Mills
Sent: 17 July 2012 14:53
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Help with elementary CPU speed question
I have gotten dragged into a CPU performance question; a field I know little
about.
I run a test on a 2094-722
Rob Scott has pointed you in the right direction.
Worth emphasizing is that CP-SU ratios are most useful for botionally
'scientific' , CP-intensive applications.
Many 'business' applications are I/O-bound, some of them--MFUs are the
classic example--to the extent that shrinking CP processing to
CPU speed question
If you have access to the MXG software, search in SOURCLIB for this
information. Dr. Merrill's book which is in this library can be very
helpful.
I don't have MXG. I have the IBM performance tables
https://www-304.ibm.com/servers/resourcelink/lib03060.nsf/pages/srmindex
17, 2012 11:36 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Help with elementary CPU speed question
Rob Scott has pointed you in the right direction.
Worth emphasizing is that CP-SU ratios are most useful for botionally
'scientific' , CP-intensive applications.
Many 'business' applications are I
.
Charles
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
Behalf Of John Gilmore
Sent: Tuesday, July 17, 2012 8:36 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Help with elementary CPU speed question
Rob Scott has pointed you in the right direction
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