[comp.arch] Downsizing and K.M.'s

ggw@wolves.uucp (Gregory G. Woodbury) (11/27/89)

	The discussion comes around again to some personal opinions about
the effectiveness of having a "workstation" (a.k.a "killer micro") on
the desk versus the use of a centralized computing facility.  In each
case it should be noted that some situations will do better with a
shared central facility, and others will do better with the individual
workstation.

	I will not claim that (at work at the university) that we are
making the most effective use of the individual workstations that we
decided to go with  --  there IS a LOT of wasted time when the
machines are not doing completely useful work.  HOWEVER, the cost of
having the workstations in house (all costs!) is far lower than trying
to use the university owned "mainframe".

	We may suffer with a low i/o bandwidth (due to the inherent
limitations of the "pc" platform) but even so, we can shift things
around and keep going if one machine is busy with production.  Several
years ago, (when we got the first KM) the first weekend of its
installed life it did one of our studies that PAID its direct costs in
terms of time charges on the "mainframe".

	As time passes, and the programmers become accustomed to the
"tool" concept of UNIX* we are developing more and more utilities that
make life without the mainframe (and SAS ;-) more enjoyable.  It is
now to the point that as we need more capacity, we can just replace
one KM at at time and keep going. (e.g. dump an orphaned CLIPPER and
put an 88K in its place.)

	The anecdotal accounts are wonderful, and we need to keep
seeing them, but we need to also realize that not all situations can
be described with "sweeping statements" and more situations may be
amenable to the distributed methods than some can easily think of.

-- 
Gregory G. Woodbury
Sysop/owner Wolves Den UNIX BBS, Durham NC
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