From tbrennan@unam.mx Tue Jan 03 13:14:53 1995
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!unam!tbrennan
From: tbrennan@unam.mx (Tobias Brennan)
Newsgroups: comp.sys.m68k
Subject: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Jan03.131453.5275@unam.mx>
Date: Tue, 03 Jan 1995 13:14:53 GMT
Organization: Universidad Nacional Autónoma de México (DGSCA)
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Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

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

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

-- 
=== Tobias Brennan ===
Dept of Electrical Engineering, Universidad Nacional Autónoma de México (DGSCA)
"We don't sign stars. We build them."

From lnakamura@uu.net Wed Jan 04 16:47:53 1995
Path: ashpoly!cascade!bigsur!uu!lnakamura
From: lnakamura@uu.net (Lars Nakamura)
Newsgroups: comp.sys.m68k
Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Jan04.164753.8052@uu.net>
Date: Wed, 04 Jan 1995 16:47:53 GMT
References: <1995Jan03.131453.5275@unam.mx>
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In article <1995Jan03.131453.5275@unam.mx>, tbrennan@unam.mx (Tobias Brennan) writes:
> Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).
> Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes.

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

Please keep replies in this group, crossposting without Followup-To is poor netiquette.

-- 
=== Lars Nakamura ===
Dept of Electrical Engineering, UUNET Technologies, Falls Church VA
"There are 14 nodes and only 10 countries. Count again."

From kgirard@rwth-aachen.de Thu Jan 05 21:53:53 1995
Path: ashpoly!cascade!brgate!saturno!rwth-aachen!kgirard
From: kgirard@rwth-aachen.de (Karen Girard)
Newsgroups: comp.sys.m68k
Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Jan05.215353.3508@rwth-aachen.de>
Date: Thu, 05 Jan 1995 21:53:53 GMT
References: <1995Jan03.131453.5275@unam.mx> <1995Jan04.164753.8052@uu.net>
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In article <1995Jan04.164753.8052@uu.net>, lnakamura@uu.net (Lars Nakamura) writes:
> Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

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

-- 
Karen Girard <kgirard@rwth-aachen.de>
"5 sigma is a discovery. 7 is a question."
NeXTstation Turbo Color / NEXTSTEP 3.3