From jramirez@tum.de Thu Jun 22 15:09:04 1995
Path: ashpoly!cascade!bigsur!tum!jramirez
From: jramirez@tum.de (Jens Ramírez)
Newsgroups: comp.sys.m68k
Subject: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Jun22.150904.5663@tum.de>
Date: Thu, 22 Jun 1995 15:09:04 GMT
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Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow.
Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes.

I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector.

-- 
Jens Ramírez | jramirez@tum.de
PGP Key fingerprint: EBB6 D878 1645 F3A0
"Keep the channels open."

From dschneider@demon.co.uk Sat Jun 24 12:24:04 1995
Path: ashpoly!cascade!brgate!saturno!demon!dschneider
From: dschneider@demon.co.uk (Dmitri Schneider)
Newsgroups: comp.sys.m68k
Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Jun24.122404.3286@demon.co.uk>
Date: Sat, 24 Jun 1995 12:24:04 GMT
References: <1995Jun22.150904.5663@tum.de>
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In article <1995Jun22.150904.5663@tum.de>, jramirez@tum.de (Jens Ramírez) writes:
> Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds.

-- 
Dmitri Schneider | dschneider@demon.co.uk
PGP Key fingerprint: DCAB 13F5 9718 D34A
"Keep the channels open."

From mrobertson@u-tokyo.ac.jp Sun Jun 25 23:34:04 1995
Path: ashpoly!cascade!transat!eunet-fr!teletel!u-tokyo!mrobertson
From: mrobertson@u-tokyo.ac.jp (Morag Robertson)
Newsgroups: comp.sys.m68k
Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Jun25.233404.9320@u-tokyo.ac.jp>
Date: Sun, 25 Jun 1995 23:34:04 GMT
References: <1995Jun22.150904.5663@tum.de>
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In article <1995Jun22.150904.5663@tum.de>, jramirez@tum.de (Jens Ramírez) writes:
> Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

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

-- 
Morag Robertson | mrobertson@u-tokyo.ac.jp
PGP Key fingerprint: C0BA 0411 7912 2847
"Keep the channels open."