home *** CD-ROM | disk | FTP | other *** search
- Path: 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
-
- 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
-