Cathcart VM Workshop 50th

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Presentation on the people, systems and mistakes I made working with, and for IBM over a 30-year period. "What you see of a mainframe may not change, how you view it, will!"

Technology

VM - IF YOU DON’T
KNOW WHERE
YOU’VE BEEN…
VM WORKSHOP 2022

Welcome to my web 3.0
Presentation
I’ll be selling individual
slides as NFT’s after we’ve finished!

HELLO!
I am MarkCathcart
In 1974,I leftHighSchoolage-15.
3-monthslaterI started work
sorting punchcards.
Youcan find me at @cathcam
4mc@duck.com
3

STANDING ON THE SHOULDERS OF GIANTS
John Hartmann
IBM Denmark
Adrian Walmsley
IBM UK FSC
Stuart McRae
Imperial College, Lotus, IBM UK
Mike Cowlishaw
IBM UK
Dick Newson
IBM Kingston, CERN
Melinda Varian
Princeton University
Hank Kee
Chemical Bank
WBAI PC Radio Show
Nick Donofrio
IBM Senior VP
Gerry Hackett
IBM Endicott, Dell

BEFORE IBM
“JCL is a terrible programming language”
– Fred Brooks

6
▪ 3-Day wait for compilations
▪ “Security only as strong as it’s weakest link”
▪ Installing VM/370 BSEPP
▪ P2P Dial-up enhanced through source code
ADVENTURE, MORE
THAN JUST A GAME

SWIFT BANKING GOES BIG!
9
▪ Chemical Bank NY, early IBM 308x customer
▪ SWIFT Banking application standalone
4341 DOS/VS R31 system
▪ Needed space in center! Remove 4341+I/O
▪ My job, make DOS/VS +SWIFT run as guest on VM/SP HPO
R3/3.4 on idle 3033MP
▪ It didn’t go as planned. We didn’t know what we didn’t know

THE WAKEUP PROBLEM
11
▪ Chemical Bank Long Island NY - IBM 3084
▪ Credit Card Clearing, Accounts Mgmt.
3081 MVS/SP
▪ Needs Additional Capacity for peak sales days
▪ My job: MVS Prod.; VM/CMS + MVS TST
▪ Non-Disruptive Transition Mode plus
XEDIT macro for DIRMAINT
▪ Check Return Codes, Always!

THE IBM YEARS
Be The Change You Want To See!

LONDON BANKING & UK FSC
▪ 1987 Time to plan for Y2K
▪ 1990 The 3090 Processors +
ESA/390 Architecture
▪ 1992 PR/SM (LPAR)
▪ Client/Server

CHANGE WAS CONSTANT
▪ VM/XA At UK Banks Prep’ for Y2K
▪ Texaco VM/XA SF 1 ESP.
▪ MHPG Support, PR/SM and LPARS
▪ ICI Pharma / Industrial 23k PROFS
users.

WHAT MOTHER WARNED US ABOUT!
16
▪ SES – Beginning of end, or End of
beginning?
‧ Unable to apply PTF’s for PR/SM
Support
▪ IBM Redbook alternative VM Service
GG24-3320
▪ “VMSES SAFARI – With gun & camera”
1990 SHARE USA best session award

PROJECT “PANDORA”
▪ PC Week article
▪ Push for open standards
▪ POSIX, DCE, CORBA
▪ “Objects Are Closer Than They Appear”
▪ OpenEdition
▪ Java
▪ LINUX

THE PUSH FOR OPEN
▪ 370 > XA > ESA/390 was a revolution
for the mainframe, but not for IBM.
▪ In 1993 Lou Gerstner became
Chairman & CEO of IBM.
▪ Videos Commisioned for the “new
IBM” education that year.
18
[Video link on last slide]

The New Marketplace Model
– An Open Playing Field
“We are no longer alone in drawing this new
computing model. But while pretty much everyone
now agrees on the outlines, there is much
disagreement about the approach. Basically, it
comes down to whether you believe in
interoperability and common standards or not. We
have certainly placed our bet.
A lot of companies' including many of our leading
competitor’s still don’t acknowledge or fully
understand that common standards are essential
in a networked world, and that no one will ever
again control customers through proprietary
technology.” https://www.ibm.com/annualreport/assets/past-reports/2001-ibm-annual-report.pdf
Chairman’s Letter of IBM 2001 Annual report

FOR THE RECORD!
VM Master
Class
VM Master Class '92 - YouTube
VM Master Class '93 – YouTube
Nick Donofrio Message for the VM Community circa 1993
Open Systems A video we made for the the new IBM Open & Distributed Strategy
OpenEdition
MVS & VM
My paper from 1994/95 on open interfaces and the mainframe
pre-cursor to
m/f Linux
OS/390 Automated UNIX System Option for VM, VSE and OS/390
Release 1
IBM
Virtualization
My paper from 2006 to brief industry analysts on IBM Virtualization
technology.

THANKS! Anyquestions?You can find me at
@cathcam& 4mc@duck.com
https://markcathcart.com
https://cathcam.wordpress.com
https://ctproduced.com

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Cathcart VM Workshop 50th

1. VM - IF YOU DON’T KNOW WHERE YOU’VE BEEN… VM WORKSHOP 2022

2. Welcome to my web 3.0 Presentation I’ll be selling individual slides as NFT’s after we’ve finished!

3. HELLO! I am MarkCathcart In 1974,I leftHighSchoolage-15. 3-monthslaterI started work sorting punchcards. Youcan find me at @cathcam 4mc@duck.com 3

4. STANDING ON THE SHOULDERS OF GIANTS John Hartmann IBM Denmark Adrian Walmsley IBM UK FSC Stuart McRae Imperial College, Lotus, IBM UK Mike Cowlishaw IBM UK Dick Newson IBM Kingston, CERN Melinda Varian Princeton University Hank Kee Chemical Bank WBAI PC Radio Show Nick Donofrio IBM Senior VP Gerry Hackett IBM Endicott, Dell

5. BEFORE IBM “JCL is a terrible programming language” – Fred Brooks

6. 6 ▪ 3-Day wait for compilations ▪ “Security only as strong as it’s weakest link” ▪ Installing VM/370 BSEPP ▪ P2P Dial-up enhanced through source code ADVENTURE, MORE THAN JUST A GAME

7. 7 CHEMICAL BANK, NEW YORK

8. SWIFT BANKING GOES BIG! 8

9. SWIFT BANKING GOES BIG! 9 ▪ Chemical Bank NY, early IBM 308x customer ▪ SWIFT Banking application standalone 4341 DOS/VS R31 system ▪ Needed space in center! Remove 4341+I/O ▪ My job, make DOS/VS +SWIFT run as guest on VM/SP HPO R3/3.4 on idle 3033MP ▪ It didn’t go as planned. We didn’t know what we didn’t know

10. THE WAKEUP PROBLEM 10

11. THE WAKEUP PROBLEM 11 ▪ Chemical Bank Long Island NY - IBM 3084 ▪ Credit Card Clearing, Accounts Mgmt. 3081 MVS/SP ▪ Needs Additional Capacity for peak sales days ▪ My job: MVS Prod.; VM/CMS + MVS TST ▪ Non-Disruptive Transition Mode plus XEDIT macro for DIRMAINT ▪ Check Return Codes, Always!

12. BYTE Magazine – October 1982

13. THE IBM YEARS Be The Change You Want To See!

14. LONDON BANKING & UK FSC ▪ 1987 Time to plan for Y2K ▪ 1990 The 3090 Processors + ESA/390 Architecture ▪ 1992 PR/SM (LPAR) ▪ Client/Server

15. CHANGE WAS CONSTANT ▪ VM/XA At UK Banks Prep’ for Y2K ▪ Texaco VM/XA SF 1 ESP. ▪ MHPG Support, PR/SM and LPARS ▪ ICI Pharma / Industrial 23k PROFS users.

16. WHAT MOTHER WARNED US ABOUT! 16 ▪ SES – Beginning of end, or End of beginning? ‧ Unable to apply PTF’s for PR/SM Support ▪ IBM Redbook alternative VM Service GG24-3320 ▪ “VMSES SAFARI – With gun & camera” 1990 SHARE USA best session award

17. PROJECT “PANDORA” ▪ PC Week article ▪ Push for open standards ▪ POSIX, DCE, CORBA ▪ “Objects Are Closer Than They Appear” ▪ OpenEdition ▪ Java ▪ LINUX

18. THE PUSH FOR OPEN ▪ 370 > XA > ESA/390 was a revolution for the mainframe, but not for IBM. ▪ In 1993 Lou Gerstner became Chairman & CEO of IBM. ▪ Videos Commisioned for the “new IBM” education that year. 18 [Video link on last slide]

19. The New Marketplace Model – An Open Playing Field “We are no longer alone in drawing this new computing model. But while pretty much everyone now agrees on the outlines, there is much disagreement about the approach. Basically, it comes down to whether you believe in interoperability and common standards or not. We have certainly placed our bet. A lot of companies' including many of our leading competitor’s still don’t acknowledge or fully understand that common standards are essential in a networked world, and that no one will ever again control customers through proprietary technology.” https://www.ibm.com/annualreport/assets/past-reports/2001-ibm-annual-report.pdf Chairman’s Letter of IBM 2001 Annual report

20. FOR THE RECORD! VM Master Class VM Master Class '92 - YouTube VM Master Class '93 – YouTube Nick Donofrio Message for the VM Community circa 1993 Open Systems A video we made for the the new IBM Open & Distributed Strategy OpenEdition MVS & VM My paper from 1994/95 on open interfaces and the mainframe pre-cursor to m/f Linux OS/390 Automated UNIX System Option for VM, VSE and OS/390 Release 1 IBM Virtualization My paper from 2006 to brief industry analysts on IBM Virtualization technology.

21. THANKS! Anyquestions?You can find me at @cathcam& 4mc@duck.com https://markcathcart.com https://cathcam.wordpress.com https://ctproduced.com

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