Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site geowhiz.UUCP Path: utzoo!linus!philabs!cmcl2!seismo!uwvax!geowhiz!karsh From: karsh@geowhiz.UUCP (Bruce Karsh) Newsgroups: net.arch,net.math Subject: Re: "The Shared Memory Hypercube" Do you smell any smoke? Message-ID: <182@geowhiz.UUCP> Date: Sat, 4-May-85 22:29:16 EDT Article-I.D.: geowhiz.182 Posted: Sat May 4 22:29:16 1985 Date-Received: Tue, 7-May-85 20:44:25 EDT References: <2132@sun.uucp> <1447@think.ARPA> <551@lll-crg.ARPA> <1483@think.ARPA> <560@lll-crg.ARPA> <1523@think.ARPA> Distribution: net Organization: UW Madison, Geology Dept. Lines: 20 Xref: linus net.arch:961 net.math:1615 > > >> Very few programs actually use the n-cube directly > >Take a look at the FFT, its an important problem, it blows smoke on the > >hypercube. As I have said before, the wires is there. The FFT uses all of > >them. > I was afraid you might bring up FFT. Just as a matter of curiosity, > what percentag of total computing time do you use up on FFT's? Well, in the geophysical industry, it's not uncommon to have mainframes doing almost nothing but ffts. The geophysical industry is probably one of the biggest consumers of computers in the world. (I'm not implying that it's necessary for a parallel machine to do FFT's quickly. But the oil industry would be a very large purchaser of a parallel machine that did FFT's quickly.) -- Bruce Karsh | U. Wisc. Dept. Geology and Geophysics | 1215 W Dayton, Madison, WI 53706 | This space for rent. (608) 262-1697 | {ihnp4,seismo}!uwvax!geowhiz!karsh |