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- From: dik@cwi.nl (Dik T. Winter)
- Newsgroups: comp.arch,comp.lang.misc
- Subject: Re: Hardware Support for Numeric Algorithms
- Message-ID: <7891@charon.cwi.nl>
- Date: 13 Nov 92 01:01:31 GMT
- References: <1992Nov5.202412.7266@linus.mitre.org> <1992Nov10.153705.27804@yrloc.ipsa.reuter.COM> <1992Nov12.131856.12605@linus.mitre.org>
- Sender: news@cwi.nl
- Followup-To: comp.arch
- Organization: CWI, Amsterdam
- Lines: 19
-
- In article <1992Nov12.131856.12605@linus.mitre.org> bs@gauss.mitre.org (Robert D. Silverman) writes:
- > In article <1992Nov10.153705.27804@yrloc.ipsa.reuter.COM> rbe@yrloc.ipsa.reuter.COM (Robert Bernecky) writes:
- > :>I measure the run time of my algorithms in MIPS-YEARS. A MIPS-YEAR
- > :>is a 1 MIPS machine running for 1 year, or approximately 3.1 x 10^13
- > :>instructions. Jobs that take several hundred MIPS-YEARS are not uncommon.
- > :
- > :Bad guess, unless Crays, 3090s (Yes, I know they barely count) and
- > :a bit of CM-2 don't count.
- >
- > Several hundred MIPS-YEARS is a Cray running for a whole year or two. What jobs
- > have you run on Cray-class computers that take a whole year?
- >
- Not a whole year. But one program I was involved in used one CPU-month on
- a Cyber 205. I had taken two weeks to optimize it beyond recognition. And
- it was still correct (it found some hardware bugs). And indeed speed was
- the most important.
- --
- dik t. winter, cwi, kruislaan 413, 1098 sj amsterdam, nederland
- home: bovenover 215, 1025 jn amsterdam, nederland; e-mail: dik@cwi.nl
-