at one point there was almost PCO (personal computing option) ... sort of TSO for VS/1 ... however it was eventually pointed out that PCO was also initials for political party in europe ... and PCO morphed into VS/PC.
there was one plan to have VS/1 machines already preloaded with vm/cms (sort of like early flavor of LPARs) ... and using CMS as the interactive component. PCO was being positioned as an alternative. The PCO group had a "simulator" showing PCO performance something like ten times that of vm/cms ... their simulation group would "run" some number of "benchmarks" ... and then the vm/cms group were asked to perform similar (real) benchmarks (taking up a significant percentage of all vm/cms resources on the benchmarks ... taken away from doing actual development). When PCO was finally operational ... it turned out to be slower than vm/cms (but they managed to waste a significant percentage of vm/cms development resources on the fictitious benchmarks) various internal politics blocks the strategy to preload vm/cms on every mid-range machine. then in the wake of the death of Future System effort ... the MVS/XA effort managed to convince corporate to completely kill-off vm/cms (shutting down the development group and moving everybody to POK to support MVS/XA ... with claim that they wouldn't otherwise make MVS/XA ship schedule). Endicott eventually managed to save the vm/cms product mission ... but had to reconstitute a development group from scratch. -- virtualization experience starting Jan1968, 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
