d...@lists.duda.com (David Andrews) writes:
I vaguely remember the dual-address-space-facility that began life just
before XA came around. There was some exploitation of it in - I think -
MVS/SE2 (or was it SP1?).
in the wake of the failure of FS
paulgboul...@aim.com (Paul Gilmartin) writes:
How did the 67 deal with legacy code's use of the sign bit to terminate
parameter lists? Did it also have a 31-bit mode? But I suppose most
such code was written for 24-bit addressing.
as mentioned here ... science center had expected to get the
and...@blackhillsoftware.com (Andrew Rowley) writes:
I'm sure it is using the encryption method. The speed of password
cracking on GPUs is fast enough that most hashes are vulnerable using
traditional length passwords. RACF might be worse than some because
the algorithm might not be
l...@garlic.com (Anne Lynn Wheeler) writes:
for a time I used to report to the same executive as the guy responsible
for APPN ... when it came time to announce, the communication group
non-concurred and objected to the announcement ... after several weeks,
the APPN announcement letter
paulgboul...@aim.com (Paul Gilmartin) writes:
VTAM? SNA? I don't know the distinction.
... as an aside ... other divisions used to try and build SNA devices to
the SNA protocol specs ... and they wouldn't work with VTAM ... it turns
out that the only real definition for SNA is what VTAM would
kees.verno...@klm.com (Vernooij, CP - KLM , SPLXM) writes:
The big difference to notice is:
You logon to a *nix system via Telnet or so.
You don't logon to a mainframe. You logon to an application on a
mainframe. So, you don't logon *via* TSO, you logon *to* TSO.
re:
re:
http://www.garlic.com/~lynn/2014d.html#50 Can we logon to TSO witout having
TN3270 up ?
http://www.garlic.com/~lynn/2014d.html#51 Can we logon to TSO witout having
TN3270 up ?
oops, left out
The Evolution of CICS: CICS and Multiprocessor Exploitation (2004)
gary.shimin...@doit.nh.gov (Shiminsky, Gary) writes:
If my memory serves me right, back in the 1970s there was OS/MFT, OS/MVT,
OS/VS1, and OS/VS2.
OS/VS2 morphed to OS/SVS and then OS/MVS(? Or maybe just MVS) starting in
the 1980s.
OS/VS2 started out as single virtual address space (svs ...
t...@harminc.net (Tony Harminc) writes:
These were re-integrated only with the OS/390 bundling. I doubt any
one present -- even Lynn Wheeler -- knows all the politics behind all
these changes.
re:
http://www.garlic.com/~lynn/2014d.html#54 Difference between MVS and z / OS
systems
OS/390 ...
dasdbi...@comcast.net (DASDBILL2) writes:
Close. OS/VS2 was released having been already pre-morphed into SVS
and MVS. SVS was first called OS/VS2 Release 1, was first available
in 1974, and that's when I worked with it. MVS was first called
OS/VS2 Release 2, was first available slightly
darth.kel...@assurant.com (Darth Keller) writes:
Quote: gushed out of its (Target's)mainframes.
Is the author really implying this was a mainframe hack? Really?
Keep in mind that this is what the CEO's, CIO's, etc. will read.
somewhat because having been involved in doing electronic
t...@harminc.net (Tony Harminc) writes:
The overlay scheme used in HASP II had fixed-sized modules that were
read into an available area without relocation. If the space was
needed, when the first module got control again it could be loaded at
a different address. But the trick was that these
jcew...@acm.org (Joel C. Ewing) writes:
And the IBM 4341 supported System/370 architecture, so VM/370 was
indeed supported on the 4341 and was probably what the author intended.
I believe the CP-40 and CP-67 precursors of VM/370 required more than
just S/360 architecture; namely, a S/360
l...@garlic.com (Anne Lynn Wheeler) writes:
lots of customers had been convinced to order 360/67 to run the
official ibm virtual memory operating system, tss/360 ... however
tss/360 had difficulty making it to production level ... so many
locations just ran the machine as 360/65 with os/360
re:
http://www.garlic.com/~lynn/2014d.html#16 [OT ] Mainframe memories
http://www.garlic.com/~lynn/2014d.html#22 [OT ] Mainframe memories
http://www.garlic.com/~lynn/2014d.html#23 [OT ] Mainframe memorie
http://www.garlic.com/~lynn/2014d.html#25 [OT ] Mainframe memorie
univ ran fortran student
jwgli...@gmail.com (John Gilmore) writes:
begin extract
one of the things that I did have lots of problems with was supporting
position independent code (mentioned in the tss/360 wiki article)
...constantly having to hack code to make in position independent
/end extract
Is 'position
l...@garlic.com (Anne Lynn Wheeler) writes:
With regard to ACS (IBM's advance computing effort) by Amdahl ... this
has account of many of the features ... but was killed off by IBM
management because they were worried it would advance computing
state-of-the-art too fast and they would loose
ibm science center was on part of the 4th flr of 545 tech sq ...
some past posts
http://www.garlic.com/~lynn/subtopic.html#545tech
but the machine room occupied part of the 2nd flr. it had duplex (two
processor) 360/67, 768kbytes memory, three 2301 drums, five 8+1 drive
2314 string plus one 5
john.archie.mck...@gmail.com (John McKown) writes:
Wasn't there something about a PASCAL programmer knowing the value of
everything and the Wirth of nothing?
two people from the Los Gatos VLSI lab originally did mainframe pascal
for VLSI chip tools ... this goes on eventually to become the
paulgboul...@aim.com (Paul Gilmartin) writes:
Surely, when comparing technologies hardware and software from other
vendors should not be considered off-charter.
re:
http://www.garlic.com/~lynn/2014c.html#62 Optimization, CPU time, and related
issues
http://www.garlic.com/~lynn/2014c.html#64
t...@harminc.net (Tony Harminc) writes:
You've mentioned this a number of times, but I don't think you've
explained what you did to the Pascal code to get a 500x improvement.
Was the original code exceptionally bad, was your new code
exceptionally brilliant, did you take advantage of some
john.archie.mck...@gmail.com (John McKown) writes:
Look at the current System i. It really looks a lot like what has been
discussed here. It has, theoretically, a 128 bit virtual addresses.
Everything is an object. It has the single level storage so there aren't
really any disk files as such.
re:
http://www.garlic.com/~lynn/2014c.html#62 Optimization, CPU time, and related
issues
aka the internal operation of the machine ... and the execution elements
actually being managed ... are becoming less less directly related to
the external instruction architecture.
for instance, risk
dasdbi...@comcast.net (DASDBILL2) writes:
Since virtual storage is now so much less expensive and so much more
available than storage [1] was 50 years ago, why not be
really extravagant and use one whole byte per store? If the byte
contains 0, then the store number is not valid, or something
t...@harminc.net (Tony Harminc) writes:
In my circles the term core survived for quite a long time after the
introduction of the first 370 models with non magnetic-core storage
(the 158 and 168, followed closely by the lower end 138, 148 and so
on). And amusingly the UNIX people still use core
re:
http://www.garlic.com/~lynn/2014c.html#62 Optimization, CPU time, and related
issues
aka the internal operation of the machine ... and the execution elements
actually being managed ... are becoming less less directly related to
the external instruction architecture.
for instance, risk
m42tom-ibmm...@yahoo.com (Tom Marchant) writes:
John Eels had a SHARE presentation a couple of years ago where he
described the cost of going to memory. See page 88 of this:
https://share.confex.com/share/119/webprogramschedule/Handout/Session11718/SHARE
119 Session 11718 Presentation.pdf
tedmacn...@bell.blackberry.net (Ted MacNEIL) writes:
I've been doing capacity planning since 1981.
VM is better than MVS, but it's not 100% accurate.
No software monitor can be.
re:
http://www.garlic.com/~lynn/2014b.html#78 CPU time
it may not be reproducible because of things like cache
edgould1...@comcast.net (Ed Gould) writes:
At one time (MVS) there was a product called QCM. Which did measure
precisely the amount of CPU time that was used by the task and by MVS.
Alas it is (AFAIK) no longer marketed.
re:
http://www.garlic.com/~lynn/2014b.html#78 CPU time
edja...@phoenixsoftware.com (Ed Jaffe) writes:
Modern operating systems use the System z Extract-CPU-Time Facility,
which accumulates accurate execution time, in cooperation with PR/SM,
without any slop.
re:
http://www.garlic.com/~lynn/2014b.html#78 CPU time
l...@garlic.com (Anne Lynn Wheeler) writes:
somebody in europe obtains the rights to a descendent of the
performance predictor in the early 90s (in the period that the company
had gone into the red, had been reorganized into the 13 baby blues in
preparation for breaking up the company
edja...@phoenixsoftware.com (Ed Jaffe) writes:
Naturally, the laws of physics dictate the notion of a capture ratio
will always exist, but the uncaptured problem has been minimized and
for many is no longer worthy of serious concern.
re:
http://www.garlic.com/~lynn/2014b.html#78 CPU time
Robert Wessel robertwess...@yahoo.com writes:
Not only is it bad practice in general, self modifying code tends to
be extremely slow on modern processors, usually involving considerable
pipeline stalls and cache flushing. Of course once done it's fast,
but the actual change is usually quite
edja...@phoenixsoftware.com (Ed Jaffe) writes:
I've often wondered what the state of the mainframe would be today if
IBM had actually done a halfway decent job developing ISPF
Client/Server, mSys for Setup, and other similar GUI-based initiatives
from the 1990s.
re:
paulgboul...@aim.com (Paul Gilmartin) writes:
Why did that fail? Just too little, too late? NIH?
re:
http://www.garlic.com/~lynn/2014b.html#39 Resistance to Java
http://www.garlic.com/~lynn/2014b.html#44 Resistance to Java
internal network was larger than the arpanet/internet from just about
re:
http://www.garlic.com/~lynn/2014b.html#39 Resistance to Java
http://www.garlic.com/~lynn/2014b.html#44 Resistance to Java
http://www.garlic.com/~lynn/2014b.html#46 Resistance to Java
part of the issue SNA was pretty much dictated by VTAM/NCP ... which was
a low-speed, dumb terminal
dcrayf...@gmail.com (David Crayford) writes:
That's because there are no viable alternatives. It probably wouldn't
be the case if there was a zIIP enabled Ruby on Rails, Python Django
or node.js framework available.
trivia when java came out ... the director of the business group was
somebody
dasdbi...@comcast.net (DASDBILL2) writes:
IBM's core business is making profits for their stockholders. All else is
details of implementation.
IBM's core business is maximizing executive compensation ... which
translates into whatever the executive compensation plan calls for.
reference to
aledlhug...@aol.com (Aled Hughes) writes:
I've spent several hours reading news reports from far and wide about
this much anticipated development. What I would like to know is, what
does this now mean to IBM's core business. More importantly, what is
IBM's core business? Do I detect that
zedgarhoo...@gmail.com (zMan) writes:
Feh. These numbers are meaningless--probably includes the salaries of every
IBMer involved plus his/her dog.
And I thought Linux was the answer for IBM? Are they replacing those
multi-$B Linux data centers now? Yes, I realize the Cloud could be built on
l...@garlic.com (Anne Lynn Wheeler) writes:
pg465/10014-17:
Total shareholder distributions, including dividends, amounted to $82
billion, or 122 percent, of net income over this five-year
period. Likewise, during the last five years IBM spent less on capital
investment than its
historical reference 1960-1979
http://www.bobbemer.com/REGISTRY.HTM
ibm major driver behind all this
http://www.bobbemer.com/ZACHERLY.HTM
however, Learson had problem and made decision to temporarily go with
EBCDIDC w/o realizing what he had done (The Biggest Computer Goof Ever)
... and the
re:
http://www.garlic.com/~lynn/2014.html#23 Scary Sysprogs and educating those
'kids'
http://www.garlic.com/~lynn/2014.html#24 Scary Sysprogs and educating those
'kids'
after transferring to San Jose Research ... I was allowed to wandering
around other locations in the area. One of the places
john.archie.mck...@gmail.com (John McKown) writes:
Back in the z890 days, we had a CPU fail. Of course, the hardware
automatically recovered and we only knew about it due to a logrec record
being written and a message on the HMC. We also had one of our OSAs fail.
The second OSA did an ARP
efinnel...@aol.com (Ed Finnell) writes:
IIRC the 360/50's didn't have parity checking CPU buss. Long story short CE
told me in early 80's CE overtime dropped 50% with intro of 370' and
another 50% when 303x's were withdrawn.
re:
http://www.garlic.com/~lynn/2014.html#23 Scary Sysprogs and
dcrayf...@gmail.com (David Crayford) writes:
Is that still the case today? Even cheap x86 blades have machine check
architecture which can signal software on hardware failures. It must
be over a decade or so since IBM started stuffing mainframe quality
RAM modules into x86 servers, chipkill
l...@garlic.com (Anne Lynn Wheeler) writes:
slight topic drift ... Why Programmers Work At Night
http://www.businessinsider.com/why-programmers-work-at-night-2013-1
and old post with Real Programmers Don't Eat Quiche
http://www.garlic.com/~lynn/2001e.html#31
Real Programmers never work 9
john.archie.mck...@gmail.com (John McKown) writes:
We had a discussion on changes we would like to see in JCL. Well, I am
wondering if perhaps what should be embraced in a variation of Knuth's
Literate Programming in which the program source is actually embedded in
the documentation. I am
john.archie.mck...@gmail.com (John McKown) writes:
We had a discussion on changes we would like to see in JCL. Well, I am
wondering if perhaps what should be embraced in a variation of Knuth's
Literate Programming in which the program source is actually embedded in
the documentation. I am
kph...@live.com (Ken Hume IBM) writes:
Text of the 4th Ammendment to the U.S. Constitution.
The right of the people to be secure in their persons, houses, papers,
and effects, against unreasonable searches and seizures, shall not be
violated, and no Warrants shall issue, but upon probable
scott_j_f...@yahoo.com (Scott Ford) writes:
9/11 changed a lot of things , especially security, ask us who worked
or had worked on NYC up thru and after 2001
re:
http://www.garlic.com/~lynn/2014.html#9 NSA seeks to build quantum computer
that could crack most types of encryption
5 Unnerving
paulgboul...@aim.com (Paul Gilmartin) writes:
Are you suggesting that I, as a Class G user, can build and deploy a DVM,
no sysprog intervention?
re:
http://www.garilc.com/~lynn/2014.html#1 Application development paradigms [was:
RE: Learning Rexx]
that is exactly how the rexx author started
peter.far...@broadridge.com (Farley, Peter x23353) writes:
PMFJI here, but IMHO the pipeline paradigm, though obviously powerful
and useful, is not the major advantage of VM and CMS over z/OS and TSO
for developers, Rexx or otherwise.
Rather, I would argue that it is the even more the
re:
http://www.garlic.com/~lynn/2014.html#1 Application development paradigms [was:
RE: Learning Rexx]
http://www.garlic.com/~lynn/2014.html#2 Application development paradigms [was:
RE: Learning Rexx]
another thing in the wake of FS failure
http://www.garlic.com/~lynn/submain.html#futuresys
Gerard Schildberger gerar...@rrt.net writes:
I would'nt bemoan it. I tried using CMS under TSO (or under MVS, I
don't remember), but the response time was lousy (actually, bad
lousy) and the functionality wasn't there. Too many restrictions.
The same thing kinda happened when the MVS
paulgboul...@aim.com (Paul Gilmartin) writes:
I would think you'd first need sysadmin to DEFINE the service machine.
Isn't that a directory update, beyond the entitlement of a Class G user?
re:
http://www.garlic.com/~lynn/2014.html#1 Application development paradigms [was:
RE: Learning Rexx]
dbo...@sinenomine.net (David Boyes) writes:
FWIW, I think Waterloo still distributes the PC version of Waterloo
SCRIPT. Their GML implementation was reasonably compatible with the
DCF one, although Bookie tags never worked properly.
I REALLY wish IBM would release Bookie into the public
scott_j_f...@yahoo.com (Scott Ford) writes:
Not a difficult to we who worked VM or Linux...that's kind of a vague
generation
trivia ... I did internal adtech conf. spring '82 (week before share)
... it was first for a number of yrs since the corporate retrenching
after the failure of future
edgould1...@comcast.net (Ed Gould) writes:
https://www.youtube.com/watch?v=sTdWQAKzESA
IBM 5100 1973 at Palo Alto Science Center
http://en.wikipedia.org/wiki/IBM_5100
enuf of 1130 emulation to run apl\1130 (SCAMP)
product out in 1978 was enuf of 360 emulation (on PALM) to run apl\360
note
t...@harminc.net (Tony Harminc) writes:
I know nothing about FAA custom hardware, but the 65MP had no RPQ
instructions related to multiprocessing. It used the standard (though
optional) Read Direct and Write Direct instructions, with the direct
interface on each CPU plugged into the matching
paulgboul...@aim.com (Paul Gilmartin) writes:
ATTACH/DETACH appeared contemporaneously with TSO!? I'm astonished!
I'd have guessed they were much older, perhaps even aboriginal OS/360.
Was there no multiprocessing mechanism older than TSO? RYO, I suppose.
That's what I understand JES and
dskw...@mindspring.com (Daniel Skwire) writes:
Multiprocessing support earlier than TSO?
It was before my time, but I read and heard plenty about MVT/MP65, which
predates TSO's rollout by a couple years, I think.
MP65 had challenges: 'sympathy sickness where a CPU problem took down
both
dskw...@mindspring.com (Daniel Skwire) writes:
I thought the FAA had special hybrid 6 computer systems, 3 x 2 way MPs?
re:
http://www.garlic.com/~lynn/2013o.html#54 Curiosity: TCB mapping macro name -
why IKJTCB?
http://www.garlic.com/~lynn/2013o.html#55 Curiosity: TCB mapping macro name -
why
re:
http://www.garlic.com/~lynn/2013o.html#25 GUI vs 3270 Re: MVS Quick Reference,
was: LookAT
this is quickdirty conversion of internal (cms) ios3270 green card to
html ... trying to preserve a little of the original lookfeel
http://www.garlic.com/~lynn/gcard.html
very early in rex(x) days
thomas.b...@swedbank.se (Thomas Berg) writes:
Not I. If I compare a typical 3270-interface and a typical
PC/WEB-interface I generally can observe that the response times is
about 50 times better in the 3270-interface. It's also generally less
cluttered and easier to handle.
OTOH a typical
gerh...@valley.net (Gerhard Postpischil) writes:
I think you misread his message, which started with command
chaining. But I would be interested in which control units and
controllers allow data chaining beyond 65KiB.
re:
http://www.garlic.com/~lynn/2013o.html#6 hexadecimal
note a lot of
dasdbi...@comcast.net (DASDBILL2) writes:
In the late 1970s, I worked at a service bureau where I had to write a
tape file conversion program to reblock a tape file with 640KB blocks
to a much smaller physical block size that could be handled by QSAM.
My program read in one block with an EXCP
t...@harminc.net (Tony Harminc) writes:
In the real world, PCI would be used to modify the channel program on
the fly. It would presumably be copying the data to another device
(tape or disk), and as long as that output device could keep up,
there's no reason for this to be a theoretical-only
dlc@gmail.com (David L. Craig) writes:
GINYF when it doesn't equate trinary with trenary, a term
I had forgotten (I'm really trying to avoid turning this
thread into a career). At least it wasn't just a rumor.
+1 and thanks for causing me to be reminded of Minerva--
perhaps someday
re:
http://www.garlic.com/~lynn/2013o.html#5 Something to Think About - Optimal PDS
Blocking
original RAID patent from 1978 was by somebody in the san jose disk
group
http://en.wikipedia.org/wiki/RAID
... whom I actually worked with some when they let me play disk engineer
in bldgs 1415
paulgboul...@aim.com (Paul Gilmartin) writes:
If gaps and other unused space are virtualized, there is no reason for SDB
ever to choose a BLKSIZE other than 32760 (or nearest multiple of LRECL).
I suspect there are various implementations of RAID: some may virtualize
unused space; others keep
paulgboul...@aim.com (Paul Gilmartin) writes:
And an alien once asked me, VM is a version of MVS, isn't it?
cms had about 64kbytes of code that was the os simulator that allowed
os compilers and many applications to run unmodified.
the burlington mall vm370 development group was working on a
paulgboul...@aim.com (Paul Gilmartin) writes:
Gossip is that POSIX compliance was a marketing requirement. Beyond
that, it's questionable how competitively strategic IBM regards Unix
System Services.
I've mentioned before in the late 80s, senior disk engineer opening talk
at annual,
paulgboul...@aim.com (Paul Gilmartin) writes:
Which is that lowest cost platform? What was IBM's business rationale for
encouraging that migration?
re:
http://www.garlic.com/~lynn/2013n.html#78 wtf ? - was Catalog system for Unix
et al
at very high executive level ... POSIX just appears to
paulgboul...@aim.com (Paul Gilmartin) writes:
With a brief exposure to MVS, I started to learn CMS. I was shocked
(briefly) to learn that file names might begin with numeric digits; in
fact be entirely numeric. Why not in OS/360 data set names? In an
era of severe storage and CPU cycle
jwgli...@gmail.com (John Gilmore) writes:
The U.S. Customs Service defines an antique artefact as something that
is at least 50 years old, and I z/OS is identified with is antetype,
OS/360, it is or will shortly be an antique.
Now 'antique' and 'antiquated' are closely related etymologically;
jwgli...@gmail.com (John Gilmore) writes:
Long-winded and ugly but functionally adequate serialization machinery
can be developed using TS alone
that was the argument that the POK favorite son operating system people
used when attempt was made to add comapre-and-swap to 370.
charlie had
l...@garlic.com (Anne Lynn Wheeler) writes:
for some topic drift ... in hsdt there were some fiber-links with 10**-9
bit-error-rate with 15/16s reed-solomon FEC ... which resulted in
effective 10**-15 bit error rate ... approx. the same as ibm mainframe
channels of the period.
aka
l...@garlic.com (Anne Lynn Wheeler) writes:
for some topic drift ... in hsdt there were some fiber-links with 10**-9
bit-error-rate with 15/16s reed-solomon FEC ... which resulted in
effective 10**-15 bit error rate ... approx. the same as ibm mainframe
channels of the period.
aka sdlc
Robert Wessel robertwess...@yahoo.com writes:
That's not a very valid comparison. SDLC is mostly a link level
protocol; IP, UDP and TCP are not. In many cases there is
considerable error recovery on links that IP is run over - if for no
other reason than the end-to-end error recovery in TCP
l...@garlic.com (Anne Lynn Wheeler) writes:
a big issue with tcp throughput is slow-start as mechanism for
congestion control/avoidance ... aka in enormously large heterogeneous
network with dozens of hops end-to-end and bursty traffic ... there is
relatively high probability of periodic
shmuel+ibm-m...@patriot.net (Shmuel Metz , Seymour J.) writes:
You brought up error recovery. I was hinting that SDLC has error
recovery and IP doesn't. The error recovery in TCP is at a higher
level, and I don't see why you expect it to have lower overhead.
part of 80s protocal designs was
shmuel+ibm-m...@patriot.net (Shmuel Metz , Seymour J.) writes:
For that matter, what would an Internet using the ISO OSI model and
the related C.C.I.T.T. recommendations[1] look like?
re:
http://www.garlic.com/~lynn/2013n.html#16 z/OS is antique WAS: Aging Sysprogs =
Aging Farmers
edgould1...@comcast.net (Ed Gould) writes:
A LONG LONG time ago we had bumped in to the maxsuba of 255.
IBM almost simultaneously came out with a outrageously expensive add
on (memory was $5000 a month) to get rid of it.
My management said NFW to the cost and told me to live with it. We had
paulgboul...@aim.com (Paul Gilmartin) writes:
There's always a reason. Rarely is it an analogue of Gresham's Law,
to which one partisan attributed the triumph of UNIX over VMS (Bad
software drives out good!) Betamax succumbed to the greater capacity
of VHS cartridges; a decisive advantage in
shmuel+ibm-m...@patriot.net (Shmuel Metz , Seymour J.) writes:
Due to the NIH syndrome, VPAM and VIPAM cannot be imported from TSS.
However, I can provide you with a subroutine for the functionality of
BLDL, FIND and STOW for QSAM, with a single OPEN for multiple members.
You'd have to refit
t...@harminc.net (Tony Harminc) writes:
It serializes happily against all the CS variations, TS, and the newer
interlocked-update instructions like ASI, LAA, and so on. And there
are cases where a simple ST or the like can interoperate usefully with
CS. For instance, if you update a counter
jperr...@pacbell.net (Jon Perryman) writes:
2. It is the only tool where we can easilyt segregate interactive
versus long running programs. This allows WLM give more resources to
interactive users because they are personally waiting. Sysprog's
encourage it's use by setting WLM such that a user
jperr...@pacbell.net (Jon Perryman) writes:
* UNIX: TCP/IP was not publicly available until the 70's. Prior to
that, simple communications were available.
* z/OS: SNA existed long before TCP/IP was available. SNA was a
robust, reliable and secure communications methodology. Once TCP was
elardus.engelbre...@sita.co.za (Elardus Engelbrecht) writes:
Around 1990 and so when death of mainframe has been predicted [1],
someone said to me: The technology to completely replace big iron has
not been in place properly. Now, it is still, to my astonishment,
somewhat true! Rather, new
jperr...@pacbell.net (Jon Perryman) writes:
I meant to say when TCP/IP was publicly available. I think ARPANET was
only available to the military.
re:
http://www.garlic.com/~lynn/2013n.html#16 z/OS is antique WAS: Aging Sysprogs =
Aging Farmers
http://www.garlic.com/~lynn/2013n.html#17 z/OS is
jperr...@pacbell.net (Jon Perryman) writes:
On the other side, Unix has seen many of it's improvements because of
z/OS. You may not think so but look at the timelines and make
comparisons. The last one I personally saw was high availability. IBM
implemented SAP/HA on z/OS and SAP received the
anthony.sambat...@nih.gov (Sambataro, Anthony [E] , NIH/NBS) writes:
I've read that the Obamacare software contains 500 million lines of
code, how can that be?
I thought more like 5m LOC ... but may come to reach $400M-$500M (but
that includes everything not just writing code, but also full
jwgli...@gmail.com (John Gilmore) writes:
Lynn Wheeler's numbers are arithmetically correct, but they are also
problematic.
Mainframe channels perform multiple concurrent I/O operations that are
not adequately reflected in them.
my references have been IBM's published numbers for the z196
john.archie.mck...@gmail.com (John McKown) writes:
Thanks for the pointers. No offense, but I still don't much like
InfoCenter. I may learn to like it. Right after I learn to like Lima beans.
So, IBM pubs center doesn't have an HA setup. Interesting. I guess they're
busy restoring. Have they
l...@garlic.com (Anne Lynn Wheeler) writes:
Part of the issue with serial fibre-optic for fibre channel standard
http://en.wikipedia.org/wiki/Fibre_Channel
and similar work going on about the same time with scalable coherent
interface (that I also got dragged into)
http://en.wikipedia.org
dcrayf...@gmail.com (David Crayford) writes:
But is that unique to a mainframe? When you compare it to a POWER
system or whatever Oracle are flogging these days it doesn't stand
out. Even commodity servers hooked up to an enterprise class HBA can
handle massive amounts of I/O throughput.
re:
scott_j_f...@yahoo.com (Scott Ford) writes:
Still old adage the channels are slower than the process, hence
usually a bottleneck. My past life before development I was a Comm guy
,hardware and software..saw of lot of bottlenecks
re:
http://www.garlic.com/~lynn/2013m.html#94 SHARE Blog: News
Thomas David Rivers riv...@dignus.com writes:
I started my graduate studies at Clemson in 1984... I watched to
see if I could recognize anyone, but I suppose I was just before my time.
for other clemson topic drift ... there is lots of computer and
IBM related historical information
re:
http://www.garlic.com/~lynn/2013m.html#47
for other reference to latest activity
Stockman in The Great Deformation: The Corruption of Capitalism in
America pg464/loc9995-1:
IBM was not the born-again growth machine trumpeted by the mob of Wall
Street momo traders. It was actually a
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