Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!dali.cs.montana.edu!milton!uw-beaver!Teknowledge.COM!unix!garth!fouts@bozeman.ingr.com (Martin Fouts) From: fouts@bozeman.ingr.com (Martin Fouts) Newsgroups: comp.sys.super Subject: Re: Cray tidbits Message-ID: <526@garth.UUCP> Date: 29 Jun 90 16:32:53 GMT References: <354@garth.UUCP> <1990May23.041119.4359@ux1.cso.uiuc.edu> <390@garth.UUCP> <472@garth.UUCP> <27736@metropolis.super.ORG> Sender: fouts@garth.UUCP Distribution: comp Organization: INTERGRAPH (APD) -- Palo Alto, CA Lines: 33 In-reply-to: lerici@super.ORG's message of 18 Jun 90 23:09:02 GMT In article <27736@metropolis.super.ORG> lerici@super.ORG (Peter W. Brewer) writes: Hmmm. well yes, editors should run on supercomputers dedicated to doing fast floating point or large integer computations. Emacs belongs on the Cray of course.. :-) I think a nice RISC based front end to compile/edit etc. (after all aren't compilers/link EDITORS etc just editors? ) may be enough .. let Floating Point do Floating Point. Parallel Compilers/Parsers are nice but how complicated/how easy to debug? how about extensibility etc? So compilers don't run on the CM.. do they run in the Cray or Convex Vector Units? Thats where alot of the performance comes from... I think Unicos etc. should run on the ForeGround Processors on the Crays... it creates too many problems running on the backends... This is an old religious argument. The simple refutation is that a Cray isn't just a Floating Point (sic) unit. On a Cray system, as delivered to a customer, typically 1/4 of the manufacturing costs are for the cpu and the rest for the non cpu. Of the 1/4, maybe half is floating point. There is no system on the market for which the CPU is more than half the manufacturing cost. Besides, the users are more valuable that the tools they use. Let's try to make the machines usable, shall we? Marty -- Martin Fouts UUCP: ...!pyramid!garth!fouts ARPA: apd!fouts@ingr.com PHONE: (415) 852-2310 FAX: (415) 856-9224 MAIL: 2400 Geng Road, Palo Alto, CA, 94303 If you can find an opinion in my posting, please let me know. I don't have opinions, only misconceptions.