[email protected] (Vernooij, CP - SPLXM) writes: > If inventing a good name is one thing, reusing it is apparently still > better. I know at least 3 IBM products/features that were/are called > Hydra. Apparently this is a 'monster'ly well working term.
re: http://www.garlic.com/~lynn/2010m.html#0 IBM zEnterprise in the same time frame as the "virtual memory" to "virtual storage" change ... there was also work on online computing for DOS/VS and VS1 that was to be called "personal computing option" (PCO; aka sort of entry version of TSO). they viewed the work on morph of cp67/cms to vm370/cms as competition. some part of the PCO group had written a "simulator" and would frequently publish thruput benchmarks ... that the vm370/cms group was then required to do "real" benchmarks ... showing equivalent operation (although doing real benchmarks consumed significant percentage of the total development group resources compared to the trivial effort required of the PCO resources). The vm370/cms benchmarks were sometimes better and sometimes worse than the PCO simulated numbers. However, when PCO was finally operational, it turned out that their real thruput numbers was something like 1/10th of what had been claimed for the simulated numbers. Before announce, they decided that PCO had to be renamed (to VSPC) ... since PCO was also label of a political organization in France. misc. past posts referencing PCO: http://www.garlic.com/~lynn/2001f.html#49 any 70's era supercomputers that ran as slow as today's supercompu http://www.garlic.com/~lynn/2001i.html#30 IBM OS Timeline? http://www.garlic.com/~lynn/2002h.html#51 Why did OSI fail compared with TCP-IP? http://www.garlic.com/~lynn/2002q.html#26 LISTSERV Discussion List For USS Questions? http://www.garlic.com/~lynn/2003k.html#0 VSPC http://www.garlic.com/~lynn/2005p.html#38 storage key question http://www.garlic.com/~lynn/2005q.html#19 HASP/ASP JES/JES2/JES3 http://www.garlic.com/~lynn/2010f.html#72 Subpools - specifically 241 ACM reference ... '81 IBM JofR&D article using "memory" http://portal.acm.org/citation.cfm?id=1664864 but there are article references in the above, including '66 IBM System Journal article using "storage" but from people at science center (also above references), '71 system journal and '72 JofR&D articles using "memory". misc. past posts mentioning science center http://www.garlic.com/~lynn/subtopic.html#545tech later, people doing above articles turn out an IBM (science center) product called vs/repack ... which did semi-automated program reorganization for paged, virtual memory environment. Its program analysis was also used for things like "hot-spot" identification. The program had been used extensively by other product groups (like IMS) as part of improving performance in virtual memory environment. i distincly remember, in the runup to virtual memory being announced for 370, corporate pushing hard line about all "virtual memory" references being change to "virtual storage" (although the memory is fade about the reason for such change). I had done a lot with virtual memory and paging algorithms (for cp67) as undergraduate in the 60s ... which was incorporated in various products over the years. Later at Dec81 ACM SIGOPS conference ... I was approached by former colleague about helping somebody get their PHD at Stanford (on virtual memory algorithms). There had been other academic work in the 60s on virtual memory algorithms ... which was nearly opposite of what I had done (and the subject of the '81 Stanford PHD work) ... and there was strong opposition from those academic quarters on awarding the PHD. For some reason there was management opposition to my providing supporting information for the Stanford PHD, that delayed my being able to respond for nearly a year (regarding my 60s undergraduate work) ... copy of part of the old response http://www.garlic.com/~lynn/2006w.html#email821019 for other topic drift ... somebody's recent blog entry regarding the science center http://smartphonestechnologyandbusinessapps.blogspot.com/2010/05/bob-creasy-invented-virtual-machines-on.html -- 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
