[email protected] (Ted MacNEIL) writes:
> Mind you, I have no experience with it, so I don't know what VSPC is.

originally called PCO (personal computing option) ... something for VS1.
the name got changed when they pointed out that PCO already referred to
something outside the US.

In the very early days of VM370/CMS ... there was a whole lot of smoke
and churn between PCO & CMS ... PCO group constantly claiming that PCO
thruput was much, much better than CMS ... this frequently tied up the
(small) CMS development into knots for extended period of time ... doing
benchmarks showing CMS numbers for comparable activity (when they should
have been doing development).

So it eventually comes out that the PCO numbers were being generated
by somebody that had written a PCO "model" ... and when PCO was actually
operational ... it turned out that the model was predicting something
nearly ten times faster than actual measured numbers.

misc. past posts mentioning PCO &/or VS/PC
http://www.garlic.com/~lynn/2000.html#1 Computer of the century
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/2004.html#4 TSS/370 source archive now available
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/2006x.html#8 vmshare

-- 
42yrs virtualization experience (since Jan68), online at home since Mar1970

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