John A Pershing Jr <[email protected]> writes: > I hesistate to jump into this discussion; however, I was "there" at the > birth of APPC (LU-6.2/PU-2.1), and attended many meetings and task > forces relating to the evolution of SNA. I was a new hire into the > Research Division, having recently worked at BBN where I was "there" at > the birth of the Internet (having written the first (to my knowledge) IP > router, running on the BBN Butterfly as part of the Voice Funnel > project). As a (1) newbie IBMer and a (2) member of the Research > Division, I did not have any particular agenda (e.g., in the IMS versus > CICS wars), and was generally bemused by the political machinations that > went on within the SNA ARB. I remember bumping into Lynn Wheeler way > back then (I'm talking very early '80s), although I doubt that he > remembers me (I was one of Andy Heller's guys back then).
re: http://www.garlic.com/~lynn/2009l.html#43 SNA: conflicting opinions http://www.garlic.com/~lynn/2009l.html#44 SNA: conflicting opinions http://www.garlic.com/~lynn/2009l.html#45 SNA: conflicting opinions as undergraduate in the 60s ... i got to do a lot of os/360 enhancements at the univ ... i would take stage1 output and carefully re-arrange the stage2 sysgen cards to optimally place datasets and PDS members. For some amount of the univ. workload, I was able to obtain nearly 3-fold thruput improvement (because of the improvement in disk arm motion). I also got to rewrite large amounts of the cp67 kernel code ... for pathlength optimization, dyanmic adaptive resource management, virtual memory management and page replacement, order arm seek queuing ... and loads of other stuff. part of old share presentation at fall '68 share meeting ... mentioning some of the cp67 work and the mft14 work: http://www.garlic.com/~lynn/94.html#18 the univ. library then got a ONR grant to do a computerized catelogue ... and IBM selected them to be one of the betatest sites for the original CICS product. I got tasked to support/debug that CICS deployment. Misc. past posts mentioning cics &/or bdam http://www.garlic.com/~lynn/submain.html#bdam More than decade later ... when Jim was departing to Tandem ... he attempted to palm off both consulting with the IMS group ... as well as talking to customers about relational DBMS ... some of this discussed in past posts about system/r (original relational/sql implementation) http://www.garlic.com/~lynn/submain.html#systemr some old email related to the subject: http://www.garlic.com/~lynn/2007.html#email801006 http://www.garlic.com/~lynn/2007.html#email801016 also mentioned in this recent post http://www.garlic.com/~lynn/2009l.html#41 this was in the same period that I was also starting HSDT effort http://www.garlic.com/~lynn/subnetwork.html#hsdt I originally joined the science center in cambridge ... and then transferred to SJR in san jose. Besides getting to play in research, they let me play in the Los Gatos VLSI lab, and DBMS stuff down in STL, I also got to play disk engineer in bldgs. 14 & 15 ... some past posts mentioning getting to play disk engineer http://www.garlic.com/~lynn/subtopic.html#disk When I became Andy's direct report ... I got to stay in san jose (even tho carried on the books in ykt) with offices in various bldgs. in san jose area (including almaden after the move up the hill from bldg. 28). At the time, there were some number of people that worked on projects Andy was backing ... but didn't actually report to him. That changed when he became head of AWD. One of the things I also did at the univ. for cp67 was add tty/ascii terminal support (to the existing 2741 & 1052 terminal support). The existing support played games with dynamically figuring out the terminal type and used the 2702 SAD command to dynamically re-associate specific line-scanner with specific port/line. I tried to add the tty/ascii support in a similar dynamic manner. This all worked for leased/hardwired lines ... but didn't quite work for dialed lines ... since 2702 had shortcut and hardwired the linespeed/oscillator to each port. recent thread/posts discussing some of this http://www.garlic.com/~lynn/2009l.html#34 August 7, 1944: today is the 65th Anniversary of the Birth of the Computer http://www.garlic.com/~lynn/2009l.html#42 August 7, 1944: today is the 65th Anniversary of the Birth of the Computer this was much of the motivation for the university to start its own clone controller project; reverse engineer the channel interface, build a clone channel interface board for interdata/3 and program the interdata/3 to emulate the 2702 (but with additional feature that it could dynamically determine baud rate). there was a subsequent article blaming four of us for the clone controller business (interdata started selling it as a product ... later sold under perkin/elmer logo when PE bought interdata) http://www.garlic.com/~lynn/subtopic.html#360pcm clone controller business has been blamed as major motivation for the future system effort http://www.garlic.com/~lynn/submain.html#futuresys as well as the convoluted nature of the pu4/pu5 interface ... there were lots of jokes in other product organizations, attempting to build "SNA" complient interfaces ... that it didn't make any difference whether it was built to a SNA specification ... the only thing that really mattered was whether it worked with pu4/pu5. -- 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
