[email protected] (Doc Farmer) writes: > Today marks when I started my first job in IT. Well, my first PAYING > job - I built my first PC for a guy when I was 15, but I'm talking the > BIG IRON. I started as a keypunch operator on night-shift (while going > to high school during the day for my senior year), I actually ENJOYED > reading IBM manuals (still do - doctors have yet to find a cure), and > have spent the next third of a century either running, auditing or > securing the Armonk Giants.
i got a student programming job in '66 ... was re-implementing 1401 MPIO (unit record<->tape) front-end for 709 ... on 360/30. possibly just a learning exercise starting to have people getting familiar with 360 and getting ready for the 360/67 that was coming in (to replace the 709/1401 combo). i got to design my own monitor, interrupt handlers, device drivers, resource control, etc. next year ... i got responsibility for os/360 system maintenance & support. I started playing with output stage1 sysgen ... completely reoganizing stage2 deck so as to carefully place files and PDS members for optimized arm seek operation. 360/67 ran os/360 (as 360/65 w/o DAT or virtual memory) nearly all the time ... since tss/360 wasn't coming along very well. last week jan '68, three people from science center came out to install (virtual machine) cp67 ... univ was 2nd (or 3rd depending on how lincoln labs is counted) install (after science center). ... misc. past posts mentioning science center http://www.garlic.com/~lynn/subtopic.html#545tech I then got to also play with all the cp67 source ... rewritting large sections ... old post with part of presentation at fall '68 SHARE meeting describing some amount of cp67 kernel rewrite as well as optimized MFT/14 operation (both stand-alone and in virtual machine): http://www.garlic.com/94.html#18 CP/67 & OS MFT14 with careful placement for optimized disk arm ... and some other stuff ... I had gotten nearly three times thruput improvement for typical univ. student job workload (mft with hasp ... not virtual machine). recent discussion of other related stuff in comp.arch thread: http://www.garlic.com/~lynn/2009m.html#16 http://www.garlic.com/~lynn/2009m.html#26 http://www.garlic.com/~lynn/2009m.html#31 http://www.garlic.com/~lynn/2009m.html#32 http://www.garlic.com/~lynn/2009m.html#36 http://www.garlic.com/~lynn/2009m.html#37 a few more months will mark 40yrs since I got home online access (dialup 2741 terminal) -- 40+yrs virtualization experience (since Jan68), online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
