_Hyatt Hotels data hacked - Dec. 23, 2015_
(http://money.cnn.com/2015/12/23/technology/hyatt-malware/)
Heads up if you were traveling. BTW the robot reindeer video is pretty
fascinating.
--
For IBM-MAIN subscribe / signof
Thank you all for your ideas and opinions. Just so we're all clear, I
currently have no plans to make this kind of change to SMP/E, but its an
idea I've had for a while and I thought it was worth discussing. And
BTW your responses were pretty much what I expected.
Thanks again, and have a h
Kurt,
My Christmas wish: An enhancement to easily identify SECINT PTFs through
reports
Merry Christmas and a very Happy New Year to All!
Bob
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of Kurt Quackenbush
Sent: Thursday, Dece
Yea, today you have to subscribe and be approved to access the SECINT data, and
then you have to manually download the SMPE assigns, and receive that. Once
that is done, you can then easily do apply's/reporting based on that SOURCEID.
My biggest beef with the Website for the SECINT data is not
Not so simple anymore.
"How long does a store halfword take?" used to be a question that had an
answer. It no longer does.
My working rule of thumb (admittedly grossly oversimplified) is
"instructions take no time, storage references take forever." I have heard
it said that storage is the new DAS
You have an *IBM rep*?
I also wish that the HOLDs file was in a format that could easily be imported
into EXCEL so that I could use filtering criteria.
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of Jousma, David
Sent: Thursday, De
I have looked at the public documentation on the z13 and had the privilege to
speak to some of the people behind parts of it, and it is an amazing machine.
The reason you can't say how long an instruction takes is that in many cases
things are happening A) out of sequence; B) at the same time and
On 12/23/2015 7:46 AM, Jerry Callen wrote:
I'm in the process of hand-tuning a small, performance critical algorithm on a Z13, and
I'm hampered by the lack of detailed information on the instruction-level performance of
the machine. Back in the day, IBM used to publish a "Functional
Characteri
On Thu, 24 Dec 2015 10:02:35 -0500, Richards, Robert B. wrote:
>You have an *IBM rep*?
>
>I also wish that the HOLDs file was in a format that could easily be imported
>into EXCEL so that I could use filtering criteria.
>
(Or LibreOffice for those not Excel-afflicted.)
Is it regular enough that
Chris and Charles,
I get that instruction-level tuning isn't even remotely feasible or productive
any more due to pipelining and complex cache issues. My own experience in
performance enhancing projects has validated advice I was given in this forum
may years ago: The only way you can test pe
charl...@mcn.org (Charles Mills) writes:
> Not so simple anymore.
>
> "How long does a store halfword take?" used to be a question that had an
> answer. It no longer does.
>
> My working rule of thumb (admittedly grossly oversimplified) is
> "instructions take no time, storage references take forev
Farley, Peter x23353 wrote:
So what is an ordinary programmer to do?
Years ago I guess I had nothing to do so I wrote a program that hooked
into various LINK/LOAD SVC's and recorded the load module name (like
Isogon and TADz do). That huge pile of data ended up on a tape and I
wrote some co
On 23 December 2015 at 10:46, Jerry Callen wrote:
> I'm in the process of hand-tuning a small, performance critical algorithm on
> a Z13, and I'm hampered by the lack of detailed information on the
> instruction-level performance of the machine.
Just to add two thoughts to the several good comm
This is in no way a personal comment on Tom's experience.
'What a programmer is supposed to do' is avoid stupid code. We were once
tasked with finding the bottleneck in a fairly mundane VSAM application. It
ran horribly, consuming scads of both CPU and wall clock. It didn't take
long using an OTS
Right ... the point being "don't bother figuring out whether store or store
halfword is faster -- change your algorithm so you have only 1/1000 as many
stores."
Charles
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
Behalf Of Tom Brennan
Sent:
Storage is the new DASD and CPU time is the new wall clock time.
I like it.
Charles
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
Behalf Of Anne & Lynn Wheeler
Sent: Thursday, December 24, 2015 1:47 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re
Or as I said in 1974 ...
https://books.google.com/books?id=XrgyMRVh128C&pg=PA16
(Gawd, I'm turning into Lynn Wheeler ... )
Charles
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
Behalf Of Skip Robinson
Sent: Thursday, December 24, 2015 2:27
On 23 Dec 2015 15:52:13 -0800, in bit.listserv.ibm-main you wrote:
>In
>,
>on 12/23/2015
> at 04:52 PM, Mike Schwab said:
>
>>On Wed, Dec 23, 2015 at 4:30 PM, Shmuel Metz (Seymour J.)
>> wrote:
>>> In
>>> <29b16432403d6c45a9bee5f0302d191779b9f...@vss-exchmb1.sfg.corp.LOCAL>,
>>> on 12/23/2015
>
And a secondary point is that the original programmer might simply need
some help. I'm more of a brute-force-make-it-work type of programmer,
which may not be best when real Computer Science training is needed.
Charles Mills wrote:
Right ... the point being "don't bother figuring out whether
On Thu, Dec 24, 2015 at 12:47 PM, Anne & Lynn Wheeler wrote:
>
> risc has been doing cache miss compensation for decades, out-of-order
> execution, branch prediction, speculative execution, hyperthreading ...
> can be viewed as hardware analogy to 60s multitasking ... given the
> processor someth
mike.a.sch...@gmail.com (Mike Schwab) writes:
> If branch predicting is a big hang up, the obvious solution is to
> start processing all possible outcomes then keep the one that is
> actually taken. I. E. B OUTCOME(R15) where R15 is a return code of
> 0,4,8,12,16.
aka, speculative execution ...
Interesting article. Do you have a link to the article it appears to be a
response to?
> Date: Thu, 24 Dec 2015 14:42:19 -0500
> From: charl...@mcn.org
> Subject: Re: Is there a source for detailed, instruction-level performance
> info?
> To: IBM-MAIN@LISTSERV.UA.EDU
>
> Or as I said in 1974 .
On 12/24/2015 12:52 PM, Tom Brennan wrote:
> Farley, Peter x23353 wrote:
>> So what is an ordinary programmer to do?
>
> Years ago I guess I had nothing to do so I wrote a program that hooked
> into various LINK/LOAD SVC's and recorded the load module name (like
> Isogon and TADz do). That huge pi
Thanks. It's held up reasonably well I think considering that it is 42 years
old next month. (Other than the references to specific products!)
I did not have a link but the Google do:
https://books.google.com/books?id=q_IffYrk4VEC&pg=PA18
I find reading the Computerworld -- especially the ads -
Don't use zoned decimal for subscripts or counters, rather use indexes for
subscripts and binary for counter type variables. And when using conditional
branching, try to code so as to make the branch the exception rather than the
rule. For large table lookups, use a binary search as opposed to a
On Thu, 24 Dec 2015 10:02:35 -0500, Richards, Robert B. wrote:
>You have an *IBM rep*?
>
>I also wish that the HOLDs file was in a format that could easily be imported
>into EXCEL so that I could use filtering criteria.
>
Heres a hack at converting HOLDDATA to CSV. (I left out the hard part:
pa
I have a client that is considering installing ZEKE. Said client has a fair
amount of console dialog that needs to be automated. The questions is Can ZEKE
recognize console messages generated via a program(DISPLAY UPON CONSOLE) and
respond to such?
--
On Dec 24, 2015, at 4:06 PM, Richard Pinion wrote:
Don't use zoned decimal for subscripts or counters, rather use
indexes for
subscripts and binary for counter type variables. And when using
conditional
branching, try to code so as to make the branch the exception
rather than the
rule. Fo
rpin...@netscape.com (Richard Pinion) writes:
> Don't use zoned decimal for subscripts or counters, rather use indexes
> for subscripts and binary for counter type variables. And when using
> conditional branching, try to code so as to make the branch the
> exception rather than the rule. For lar
This question sounds familiar.
CharlesSent from a mobile; please excuse the brevity
Original message
From: Carl Edwards <00df3759e3e7-dmarc-requ...@listserv.ua.edu>
Date: 12/24/2015 7:51 PM (GMT-05:00)
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Console automation using
ZEKE is also able to recognize the creation of a dataset. If dataset ABC.XYZ is
created and catalogued, submit job. Works very well. We use the feature in
production often.
Linda
Sent from my iPhone
> On Dec 23, 2015, at 5:35 AM, Chuck Arney wrote:
>
> ZEKE DOES monitor the console messages
On 12/24/2015 06:51 PM, Carl Edwards wrote:
> I have a client that is considering installing ZEKE. Said client has a fair
> amount of console dialog that needs to be automated. The questions is Can
> ZEKE recognize console messages generated via a program(DISPLAY UPON CONSOLE)
> and respond to s
At 15:53 -0600 on 12/24/2015, Joel C. Ewing wrote about Re: Is there
a source for detailed, instruction-level perfo:
As Tom has noted, the most dramatic performance enhancements typically
come from a change in strategy or algorithm used. In my experience you
get better results by looking for w
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