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- From: dhd@exnet.co.uk (Damon)
- Newsgroups: comp.arch
- Subject: Re: HOw many PC's make an Amdahl mainframe
- Message-ID: <C1JMtr.B2I@exnet.co.uk>
- Date: 28 Jan 93 02:56:14 GMT
- References: <1k46ioINNijv@fido.asd.sgi.com> <1993Jan26.215541.9957@adobe.com> <1993Jan27.024351.17902@news.arc.nasa.gov>
- Organization: ExNet Systems Ltd Public Access News, London, UK
- Lines: 33
-
- In article <1993Jan27.024351.17902@news.arc.nasa.gov> lamaster@pioneer.arc.nasa.gov (Hugh LaMaster) writes:
- >In article <1993Jan26.215541.9957@adobe.com>, zstern@adobe.com (Zalman Stern) writes:
- >|> fewer and fewer problems that require that kind of power and it becomes
- >|> harder and harder to make the machine more powerful. Cheaper is a problem
- >|> because the margins go down and a lot of a mainframe's costs are not
- >|> hardware oriented. (I.e. service, paying for the space and other central
- >|> facilities required.)
- >
- >Actually, though, there are plenty of problems that require the largest
- >available power, and, in the commercial world, there are an increasing
- >number of really big applications (e.g. VISA-type credit cards) which,
- >generally, need an increasing number of transactions-per-second. Anyone
- >tried to buy anything with a VISA card the last week before Christmas?
- >The wait can be rather long. Credit card companies, Airline Reservations,
- >banks with ATM applications, you-name-it. All have increasing needs for
- >systems with expanding transaction rates. A system which can do 2000
- >transactions/sec may indeed be worth a *lot* more than 200 systems which
- >can do 10 trans./sec.
-
- Amex have brought several `super'computers recently as I recall (though
- it is late at night...) eg a CM-5 for doing ``promotional mailshots''
- around 92Q2, and think I remember an nCUBE being mentioned too.
-
- And they are not alone. Much as I hate to think of all these `big'
- machines being used for sending junk mail and running subscription
- lists, those are big jobs that will get bigger.
-
- Damon
- --
- Damon Hart-Davis d@hd.org London UK Tel/Fax: +44 81 755 0077 [1.37]
-
- Two separate jobs, two employers: (1) Editor of Parallelogram, (2) Consultant
- and seller of uucp news/mail feeds (UK#5 pcm, FIRST MONTH FREE) and cheap Suns.
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