Article View: comp.dsp
Article #595Re: I860 fft performance
From: Malcolm Slaney
Date: Wed, 12 Aug 1992 22:16
Date: Wed, 12 Aug 1992 22:16
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1275 bytes
In article <12948@inews.intel.com> rrao@pima.intel.com (Ravi Rao) writes: > To get peak performance, you have to program most uP in > assembly language. There is no doubt that the i860 pipeline > is hard to follow, but once you get the hang of it, its fairly > easy.............. That's pretty lame. Most RISC chips with the latest compiler technology can do better than most assembly langauge programmers.....the compilers don't do anything that humans can't do but it's a lot easier for a good compiler to reuse registers and explore all the different possibilities. Has anybody compared current RISC chips (R4000, HP's new machine, RS6000, DEC's alpha) to the DSP chips? DSP chips might be cheaper since you don't need fancy memory management but it no longer seems clear to me that DSP chips are that much faster. Malcolm
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Path: arc1-ca.pugleaf.net!sparky!uunet!olivea!decwrl!sun-barr!ames!data.nas.nasa.gov!taligent!apple!malcolm From: malcolm@Apple.COM (Malcolm Slaney) Newsgroups: comp.dsp Subject: Re: I860 fft performance Message-ID: <71151@apple.Apple.COM> Date: 12 Aug 92 22:16:32 GMT References: <713099311.0@halluc.com> <1992Aug6.125445.10704@nntp.nta.no> <12948@inews.intel.com> Organization: Apple Computer Inc, Cupertino, CA Lines: 16