Path: utzoo!dciem!array!colin From: colin@array.UUCP (Colin Plumb) Newsgroups: comp.arch Subject: Re: Anything wrong with the i860 Message-ID: <1905@array.UUCP> Date: 30 May 91 14:21:47 GMT References: <1991May7.145407.18417@midway.uchicago.edu> <3486@charon.cwi.nl> <3986@ssc-bee.ssc-vax.UUCP> Organization: Array Systems Computing, Inc., Toronto, Ontario, CANADA Lines: 13 In article dank@blacks.jpl.nasa.gov (Dan Kegel) writes: >Now that I've compared the speed of Fortran programs, I'd like to compare the >speed of hand-coded assembly versions of the same thing. >The Alliant comes with a canned signal processing library which is presumably >hand-optimized assembly code. Various i860 library vendors claim the following times for 1024-point complex FFT's: 741 us, 830 us, 745 us, 1040 us. I've heard rumours that someone's got a routine operating at <700 us, but that's on the edge of credibility based on some analyses I've made. -- -Colin