[email protected] (Dana Mitchell) writes:
> Well, yes I can,  I can run it at home too....
>
> My point was, when will it be uneconomical enough for IBM to quit
> producing 'real' z CPs and only offer z machines running on power
> cores?

re:
http://www.garlic.com/~lynn/2014h.html#9 Demonstrating Moore's law
http://www.garlic.com/~lynn/2014h.html#10 Demonstrating Moore's law
http://www.garlic.com/~lynn/2014h.html#11 Demonstrating Moore's law
http://www.garlic.com/~lynn/2014h.html#12 Demonstrating Moore's law
http://www.garlic.com/~lynn/2014h.html#13 Demonstrating Moore's law

for all we know, they may be close to that now. starting about two
decades ago, i86 started moving to risc cores with hardware layer
translating i86 instructions into risc microops ... as a result, they
have now largely negated the throughput difference between i86 and
risc processors. 

for a little other drift ...
http://www.cringely.com/2014/06/04/decline-fall-ibm/

"The Decline and Fall of IBM: End of an American Icon?" loc1630-34:

AFTERWORD What if Ginni Doesn’t Listen? Here’s what the IBM insider I
quoted in my introduction says is coming today from Ginni Rometty’s
office: “Ginni is betting the farm on PureSystems. She is also betting
the farm on Cloud. The problem is she is blaming flagging hardware sales
on Cloud-ification.

... snip ...

a couple old posts "From The Annals of Release No Software Before Its
Time" refers to zVM cluster when HONE vm370 had large cluster
single-system-image in late 70s and purescale commerical/rdbms scaleup
when we were to do ha/cmp cluster scaleup in 1992
http://www.garlic.com/~lynn/2009p.html#43 ..
http://www.garlic.com/~lynn/2009p.html#46 ..

i.e. 17yrs later ... aka ha/cmp 128-way cluster scaleup by ye92
supporting commercial, RDBMS, numeric/scientic, national labs, massive
filesystem, etc; meeting on rdbms part in ellison's conference room
jan1992
http://www.garlic.com/~lynn/95.html#13
other ha/cmp posts
http://www.garlic.com/~lynn/subtopic.html#hacmp
cluster scaleup email from the period
http://www.garlic.com/~lynn/lhwemail.html#medusa

by feb1992, the scaleup had been transferred, we were told we couldn't
work on anything with more than four processors, and announced as
supercomputer for technical and scientific *ONLY*

in early 90s, we were working with non-ibm rdbms vendors for ha/cmp
cluster because 1) ibm only had mainframe rdbms and 2) other vendors had
common source base for their open systems and their vax/cluster
implementation (i could simplify operation in ha/cmp cluster scaleup by
providing cluster API semantics that resembled vax/cluster ... also a
couple of these vendors had list of ten things dec had done wrong in
vax/cluster that they wanted me to avoid).

Part of the motivation for the transfer and announce for technical and
scientific only ... could have been mainframe RDBMS (DB2) people
complaining that if i was allowed to go ahead, it would be way ahead of
anything they had

-- 
virtualization experience starting Jan1968, online at home since Mar1970

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