From dsilva@delphi.com Tue Dec 24 08:42:55 1996
Path: ashpoly!cascade!mxgate!coyoacan!delphi!dsilva
From: dsilva@delphi.com (Dong-hyun Silva)
Newsgroups: comp.sys.m68k
Subject: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Dec24.084255.8233@delphi.com>
Date: Tue, 24 Dec 1996 08:42:55 GMT
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Can a 1989 Mac IIci decode a 40-minute LP in reasonable time?

A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions.
By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes.

Anyone running this on a Quadra 840AV with the 68040?

-- 
=== Dong-hyun Silva ===
Dept of Electrical Engineering, Delphi Internet Services
"There are 14 nodes and only 10 countries. Count again."

From vtanaka@stanford.edu Thu Dec 26 09:12:55 1996
Path: ashpoly!cascade!brgate!saturno!stanford!vtanaka
From: vtanaka@stanford.edu (Valeria Tanaka)
Newsgroups: comp.sys.m68k
Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Dec26.091255.2409@stanford.edu>
Date: Thu, 26 Dec 1996 09:12:55 GMT
References: <1996Dec24.084255.8233@delphi.com>
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In article <1996Dec24.084255.8233@delphi.com>, dsilva@delphi.com (Dong-hyun Silva) writes:
> Can a 1989 Mac IIci decode a 40-minute LP in reasonable time?
> A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions.

Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

-- 
=== Valeria Tanaka ===
Dept of Electrical Engineering, Stanford University Computer Systems Lab
"5 sigma is a discovery. 7 is a question."