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Thursday, June 16 • 11:00am - 12:00pm
VM - If you don't know where you've been... (Cathcart)

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Sir Mark of SESfari will look back at some of the highs and lows of a 20-year career working with VM, both with and for IBM, mostly because he can't look forward to it. He'll cover both personal and IBM/VM milestones, talk about the importance of making epic mistakes, both his and IBM's. Did you ever see a 3033 multi-processor system? Mark will recall how a single CCW can lock up a system as big as half a football field. That was an IBM problem, 3-years later Mark made a similar mistake with a simple REXX exec, locking up a 3084MP. When debugging and source tracing the original OCO version of SES, over a 4-day weekend at the IBM IEC Education Center in Brussels, Mark locked himself out of his room. What happened next? Equally what happened when you are organizing the first major VM and Mainframe conference in Europe and the US and British Government decide to invade Iraq? Mark will talk about the dark mainframe days of the early 1980's, the years of enlightenment, as well as why IBM bought into Linux, and it wasn't for "free beer". These and many more questions about VM will be answered with humor and humility, and a large dose of VM history.


Thursday June 16, 2022 11:00am - 12:00pm EDT
Symposium Hall