On 07/14/11 23:16, Boyes wrote:
http://www.theregister.co.uk/2011/07/14/brief_history_of_virtualisation_par=
t_2/
Somebody who actually gets it that there was a world before the PC. Few minor
nits, but overall an actually decent article on the role VM played in
prefiguring
virtualization
Earlier this week I converted an old OCT86 SEAS (european share) presentation on VM History
Performance from foildoc to powerpoint ... with a couple additions ... and
presented it at 16Mar HILLGANG meeting. Exported PDF copy here:
http://www.garlic.com/~lynn/hill0316g.pdf
a little discussion
Kris Buelens wrote:
There is handshaking between Linux and VM, and even more than one flavor
The fact that z/VM still likes to have some expanded storage is that the
management of central and expanded are different:
For expanded, CP has a time stamp and know exactly how old each page is.
On Thu, Sep 23, 2010 at 2:14 AM, O'Brien, Dennis L
dennis.l.o'br...@bankofamerica.com wrote:
I heard from a couple of performance people at SHARE that we should have
20% to 25% of the total storage in an LPAR configured as expanded
storage. Naturally, that's a guideline and the proper amount
re:
http://www.garlic.com/~lynn/2009r.html#18 Portable data centers
the modifications for vm370 release 6 to be service processor started
well before 3090 came out. it was a copy of standard vm370 release 6
(predates vm/sp) and then frozen (with respect to the standard
product) and then various
Another application by the VMSG author was parasite/story. It used the PVM logical device/3270
facility and had a HLLAPI type scripting language (before the advent of ibm/pc) ... it was
after REX was available internally. Another remarkable thing was that the executable
was small enough to fit
On 07/14/2009 01:00 AM, IBMVM automatic digest system wrote:
Version 3 was the first CMS that could not be IPLled on the iron, I
think. Someone should ask Lynn Wheeler.
re:
http://www.garlic.com/~lynn/2009j.html#67 DCSS
http://www.garlic.com/~lynn/2009j.html#68 DCSS addenda
CMS started out
Jeff wrote:
I'm definitely no substitute for Sir Lynn, but I remember DCSS and DMKSNT in
VM/370 Release 3 PLC 8, which is where I started with VM.
In fact, I used CMSAMS and CMSVSAM then for Unnatural Practices, or at least
not for the purposes for which they were created. I was porting the
Jeff wrote:
I'm definitely no substitute for Sir Lynn, but I remember DCSS and DMKSNT in
VM/370 Release 3 PLC 8, which is where I started with VM.
In fact, I used CMSAMS and CMSVSAM then for Unnatural Practices, or at least
not for the purposes for which they were created. I was porting the
A history related post copied from a.f.c. ng:
Timeline: The evolution of online communities
http://www.computerworld.com/s/article/9135308/Timeline_The_evolution_of_online_communities
from above:
E-mail discussion lists, chat rooms, BBSs, Usenet groups and more all
played a role in the
Chip Davis wrote:
... when shared segments were implemented in VM.
It seems to me that it predated the VM/370 SEPP/BSEPP days when I started, but
there's been many a synapse lost since then.
Google, Wikipedia, ibm.com, and even Melinda's wonderful work have not been
revealing, so I thought
re:
http://www.garlic.com/~lynn/2009j.html#67 DCSS
Some of the other stuff in CSC/VM was released in my resource manager
(which appeared with vm370 release 3 plc9)
the 23jun69 unbundling announcement started charging for (application)
software and se services (but they managed to make the case
20 Years Ago Today: Birth of the Dot-Com Era
http://www.pcworld.com/businesscenter/article/166302/20_years_ago_today_birth_of_the_dotcom_era.html
from above:
In those days, the Internet consisted of regional networks, who were mostly
non-profit cooperatives, and the government funded 'NSFNet'
Walter wrote:
When examined after each failure, the core (yes, real core) memory was
always wiped clean. That computer (and its tech) was housed in a metal
box (IIRC, about 6'x10', 8' high) which was transportable on the back of a
2 1/2 ton (6-by) truck, or by helicopter It was located about
rschuh wrote:
The smaller systems, the 360-20 and 360-30 had a 1401 emulator mode. It was=
a h/w or mc based feature. I don't know whether larger machines had it. Th=
ere was also a 1410 emulator mode on the -40. I do not know of any 1401 sup=
port that ran under DOS, but my DOS experience is
On 03/04/2009 01:02 AM, IBMVM automatic digest system wrote:
Long ago, in a galaxy close to where I am this week, there was a PGP
MODULE. It was built by a kind person at MIT (which is NOT close to
where I am this week) and worked exactly as one would expect it to work.
Maybe some day we will
following are a couple of emails from '78 regarding getting a copy of
adventure for vm370/cms
http://www.garlic.com/~lynn/2006y.html#email780405
http://www.garlic.com/~lynn/2006y.html#email780405b
in this post
http://www.garlic.com/~lynn/2006y.html#18 The History of Computer
Role-Playing Games
you might find this news article interesting
Whitehouse Emails Were Lost Due to Upgrade
http://news.slashdot.org/news/08/04/30/1359209.shtml
and
The case of the missing e-mail
http://arstechnica.com/articles/culture/bush-lost-e-mails.ars
and for some more whitehouse email from 25yrs or so ago
Jim Bohnsack wrote:
I remember the SNATAM name now. There was an Englishman, Graham Pursey,
who used to attend the VNET Project Team meetings that were held once
or twice a year. It seems to me that he was involved in some kind of VM
based VTAM project. Was that it or was there
CP67 was announced 40yrs ago at spring 68 share in houston.
I was invited to attend. I was undergraduate at univ where the last
week of jan68, three people from the science center
http://www.garlic.com/~lynn/subtopic.html#545tech
had come out to install cp67.
The following message is a courtesy copy of an article
that has been posted to bit.listserv.vmesa-l,alt.folklore.computers as well.
40 yrs of cp67 and cms ... not quite for the announce, since that
happened at the spring '68 share meeting in houston. however, three
people had come out from the
some recent posts in other venues on the new, 40+ yr old technology
https://financialcryptography.com/mt/archives/000988.htm
http://www.garlic.com/~lynn/aadsm27.htm#66 2007: year in review
http://www.garlic.com/~lynn/aadsm28.htm#0 2007: year in review
i've only started won on the technology
The following message is a courtesy copy of an article
that has been posted to alt.folklore.computers as well.
re:
http://www.garlic.com/~lynn/2007s.html#40 ongoing rush to the new, 40+ yr old
virtual machine technology
IBM Ships 10,000th Storage Virtualization Engine
The following message is a courtesy copy of an article
that has been posted to alt.folklore.computers as well.
Marty Zimelis wrote:
Bob,
Right name, but I believe the wrong derivation. The 67 in CP-67 comes
form the fact that it ran on the S/360 model 67, the only production model
of the
The following message is a courtesy copy of an article
that has been posted to alt.folklore.computers as well.
[EMAIL PROTECTED] writes:
Could you translate into layman's terms? What exactly is server
virtualization software?
The concept of virtual storage, as I understand it, is making an
The following message is a courtesy copy of an article
that has been posted to alt.folklore.computers as well.
re:
http://www.garlic.com/~lynn/2007s.html#33 Age of IBM VM
http://www.garlic.com/~lynn/2007s.html#36 Oracle Introduces Oracle VM As It
Leaps Into Virtualization
one could claim that
for something a little different ... also posted here
http://www.garlic.com/~lynn/2007s.html#26
latest in the new, 40+ yr old technology
Oracle Introduces Oracle VM As It Leaps Into Virtualization
http://www.informationweek.com/news/showArticle.jhtml?articleID=202805289
couple items from
Gabe Goldberg wrote:
There's
SET SHARE RELATIVE
and
VM's 35 Birthday Celebration and 2007 Knights of VM
and
SHARE: Final chairbears needed (ribbon wearer time!!)
in which phsiii said
So bring your family...I am!
I guess he's SET SHARE RELATIVE. So should anyone using family vacation
Alan Altmark wrote:
Well, it's been nigh on 40 years that CMS has been around. Seems like a
committment to me. CMS is here to stay. If all the people with z/OS
get z/VM and [re]discover CMS, who knows what might happen? Never say
die!
re:
http://www.garlic.com/~lynn/2007j.html#41 z/VM
The following message is a courtesy copy of an article
that has been posted to bit.listserv.vmesa-l,alt.folklore.computers as well.
George Haddad wrote:
The last major hole I can recall was in the late 80s or early 90s IIRC,
where it was discovered that when sending an SMSG to an SVM (I think
The following message is a courtesy copy of an article
that has been posted to bit.listserv.vmesa-l,alt.folklore.computers as well.
re:
http://www.garlic.com/~lynn/2007i.html#20 Does anyone know of a documented case
of VM being penetrated by hackers?
for a little topic drift ... a little about
Rob van der Heij wrote
The mini disk is an imperfect (but cheap) implementation of a low
level abstraction. The main defect is the number of cylinders, but
for many purposes the virtualization is good enough because the guest
can live with that.
But at considerable additional cost, VM could
McKown, John wrote:
This is not important, but I just have to ask this. Does anybody know
why the original designers of VM did not do something for minidisks
akin to a OS/360 VTOC? Actually, it would be more akin to a partition
table on a PC disk. It just seems that it would be easier to
One of the reasons the vm development group picked up so much from the
science center
http://www.garlic.com/~lynn/subtopic.html#545tech
to ship in the (vm370 product) release 3/4 time-frame was a lot of
the resources had been diverted to FS ... similar to the reference in
this post
oft repeated story about mainframe emulation and I/O with regard to 370/158 and
integrated channels; most recent telling
http://www.garlic.com/~lynn/2007d.html#62 Cycles per ASM instruction
basically the 158 microcode engine had both microcode for emulating 370 and also for emulating channels.
Brian Inglis [EMAIL PROTECTED] writes:
IME the IBM VM guys had very good ideas for interaction using the
corporate products and facilities, even though it has never been
funded adequately and often nearly terminated.
They were much better than the batch guys at letting the users fully
use all
Another CMSBACK status, a year later than the email referenced here
http://www.garlic.com/~lynn/2006t.html#24 CMSBACK
i.e. i had done the original CMSBACK implementation and deployment in
the late 70s on sjr systems and hone ... the following refers to
there additional systems where it was
ref:
http://www.garlic.com/~lynn/2006w.html#10 long ago and far away, vm370 from
early/mid 70s
while only a small subset of the virtual memory management stuff was released as
DCSS vm370 ... and none of the cms paged mapped filesystem stuff ... a little
more of the virtual memory management
In the following, CJNTEL was an online corporate directory that I had
initially put up on SJRLVM1 that could be queried by anybody on the
internal network.
The following has a suggestion for registering a person's public key
with CJNTEL and making (effecitvely publishing) it available for
Concurrent with the benchmarking, shared segment, page mapped
filesystem, resource manager, and other misc. stuff referred
to in these posts
http://www.garlic.com/~lynn/2006v.html#36 Why these original FORTRAN quirks?
http://www.garlic.com/~lynn/2006w.html#7 Why these original FORTRAN quirks?
The following message is a courtesy copy of an article
that has been posted to alt.folklore.computers,bit.listserv.vmesa-l as well.
Anne Lynn Wheeler [EMAIL PROTECTED] writes:
search engine even turns up one of my old pasts mentioning VOL1 and
HDR1:
http://www.garlic.com/~lynn/2004q.html#20
Tom Duerbush wrote:
So I guess the question I'm wondering...
How many others have shipped dumps, online, back before high speed
Internet connections?
re:
http://www.garlic.com/~lynn/2006s.html#16 memory, 360 lcs, 3090 extended
store, etc
http://www.garlic.com/~lynn/2006s.html#17 bandwidth of a
Paul B. Nieman wrote:
In the early 1990's we consolidated a data center from Sydney into
Philadelphia. We used SYBACK to do a full dump of specific (most)
minidisks to tape and shipped the tapes. We then performed daily
incrementals to disk, and sent the incrementals via RSCS, via a 9600
Schuh, Richard wrote:
Yeah, but 3090 memory was not ferrite core, was it? IIRC, it was much
cheaper and more reliable. I wasn't privy to the bean-counting
specifics, but the rumored cost of the LCS storage on our 360 class
machines was in the neighborhood or $2.5-3M per 2MB unit. And they were
re:
http://www.garlic.com/~lynn/2006o.html#49 The Fate of VM - was: Re: Baby
MVS???
http://www.garlic.com/~lynn/2006o.html#51 The Fate of VM - was: Re: Baby
MVS???
http://www.garlic.com/~lynn/2006o.html#52 The Fate of VM - was: Re: Baby
MVS???
email from long ago and far away
X-To: wheeler
Hardware virtualization slower than software?
http://developers.slashdot.org/developers/06/08/12/2028223.shtml
... from above:
One example given is compilation of a Linux kernel under a virtualized
Linux OS. Native wall-clock time: 265 seconds. Software-assisted
virtualization: 393 seconds.
Phil Smith III wrote:
Gabe reminds me that the 360 didn't run VM; I did use it, but it was
the 370/158 with 2MB that I used to use VM on.
360/67 was the only (standard) 360 with virtual memory support. it had
both 24-bit and 32-bit virtual addressing options (you didn't see more
than 24-bit
re:
http://www.garlic.com/~lynn/2006n.html#52 the more things change, the more
things stay the same
http://www.garlic.com/~lynn/2006n.html#53 the more things change, the more
things stay the same
the following article:
How Secure Is That Device? As device software joins the larger world,
R.S. wrote:
Even some mainframe programs interpret it as data, with funny effects
somtimes. For example SYSIN DD * for FTP program cannot contain the
numbers. AFAIK some TCPIP config files as well.
AFAIK the sequence numbers are completely useless nowadays. It was used
for punched card sorter.
Shmuel Metz , Seymour J. wrote:
I'm not sure when it came along, but by VM/SE there was a somewhat
more sophisticated UPDATE facility[1] with aux files, control files
and update files. I'd love to see a similar facility integrated with
ISPF.
[1] Not only could the XEDIT editor process them, but
[EMAIL PROTECTED] (John Savard) writes:
Not surprising: the NSA's Security-Enhanced Linux includes, as its
unique security feature, something called mandatory security. A file can
be flagged as having restrictions on it, and then any program which
accesses this file, and writes on other files,
Brian Inglis [EMAIL PROTECTED] writes:
Might be relevant if Lynn Wheeler could expand on the unreleased VAMPS
microcode to speed up 370 SMP, and also provided logical processors
with similarities to those on current zSeries LPARs, although that may
just have dropped parts of 370 sequential
re:
http://www.garlic.com/~lynn/2006n.html#44 Any resources on VLIW?
http://www.garlic.com/~lynn/2006n.html#47 Any resources on VLIW?
as an aside ... some number of the relatively recent 370 emulators
written for intel platforms have quoted avg. instruction ratio numbers
around 10:1 also (have to
Jim wrote:
DUMPRX was one of the slickest tools available for VM sysprogs in the
'80s. With the overall level of code quality at that time, it was really
needed. I have always thought that the only reason it wasn't included in
the product was the NIH mentality that was common in IBM at that
Jim wrote:
DUMPRX was one of the slickest tools available for VM sysprogs in the
'80s. With the overall level of code quality at that time, it was really
needed. I have always thought that the only reason it wasn't included in
the product was the NIH mentality that was common in IBM at that
Charles Mills wrote:
Here's a good start:
http://listserv.uark.edu/scripts/wa.exe?A2=ind0509L=ibmvmP=8109
note in the above referenced archive ... it mentions transmission as
reverse inverted
• ALC is transmitted reverse inverted. For example, capital A is
0x31, but it's transmitted as
Rostyslaw J. Lewyckyj [EMAIL PROTECTED] writes:
Well I had exposure, access, to an IBM MVT product called TESTTRAN
which was sort of available on our system with assembler F and , if
I remember correctly, Fortran G, both in batch and TSO. One had to
compile/assemble with the TEST option,
Jim Bohnsack wrote:
I had an XT/370 PC sometime in the mid-late 80's. It used PAM as it's
native or default CMS file system if I remember correctly.
Jim
re:
http://www.garlic.com/~lynn/2006m.html#53 DCSS
http://www.garlic.com/~lynn/2006m.html#54 DCSS
part of the issue was that even tho
jim bohnsack wrote:
Colin--I was thinking about Amadeus last week anyway. I am still shaking
my head in disbelief that last week, 4 years ago, I was sitting there with
job offers from Amadeus, MIT, and Cornell. I have always said that in 20
years I hope that I'm not sitting in a rocking
0DCE 96026003OI SGTCB=1
REP 0DCE 4700NOP
//
--
Anne Lynn Wheeler | http://www.garlic.com/~lynn/
on
macrocode the previous year (mar80).
--
Anne Lynn Wheeler | http://www.garlic.com/~lynn/
and descriptors
http://www.garlic.com/~lynn/2006.html#35 Charging Time
http://www.garlic.com/~lynn/2006.html#40 All Good Things
--
Anne Lynn Wheeler | http://www.garlic.com/~lynn/
--
Anne Lynn Wheeler | http://www.garlic.com/~lynn/
The Pankian Metaphor
http://www.garlic.com/~lynn/2006i.html#24 Virtual memory implementation in
S/370
--
Anne Lynn Wheeler | http://www.garlic.com/~lynn/
% CPU is not always bad
http://www.garlic.com/~lynn/2005h.html#13 Today's mainframe--anything to new?
http://www.garlic.com/~lynn/2005k.html#53 Performance and Capacity Planning
http://www.garlic.com/~lynn/2005n.html#29 Data communications over telegraph
circuits
--
Anne Lynn Wheeler | http
workstation computer
http://www.garlic.com/~lynn/2006b.html#7 Mount a tape
http://www.garlic.com/~lynn/2006f.html#2 using 3390 mod-9s
--
Anne Lynn Wheeler | http://www.garlic.com/~lynn/
boundaries
http://www.garlic.com/~lynn/2006i.html#10 Hadware Support for Protection Bits:
what does it really mean?
--
Anne Lynn Wheeler | http://www.garlic.com/~lynn/
67 matches
Mail list logo
