From lperez@ox.ac.uk Wed Feb 22 04:18:31 1995
Path: ashpoly!cascade!mxgate!coyoacan!ox!lperez
From: lperez@ox.ac.uk (Lucia Pérez)
Newsgroups: comp.sys.m68k
Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Feb22.041831.5280@ox.ac.uk>
Date: Wed, 22 Feb 1995 04:18:31 GMT
Organization: Oxford University Computing Laboratory
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Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining.

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.

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

-- 
Lucia Pérez <lperez@ox.ac.uk>
Practical Peripherals 14.4 @ 19,200 bps
"Hold for relay."

From csmirnov@uni-hamburg.de Thu Feb 23 03:32:31 1995
Path: ashpoly!cascade!brgate!saturno!uni-hamburg!csmirnov
From: csmirnov@uni-hamburg.de (Callum Smirnov)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Feb23.033231.2222@uni-hamburg.de>
Date: Thu, 23 Feb 1995 03:32:31 GMT
References: <1995Feb22.041831.5280@ox.ac.uk>
Organization: Universität Hamburg Fachbereich Informatik
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In article <1995Feb22.041831.5280@ox.ac.uk>, lperez@ox.ac.uk (Lucia Pérez) writes:
> Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining.

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

Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin!

-- 
Callum Smirnov
Tape trading list upon request. SASE required for international mail.

From nkarlsson@tum.de Thu Feb 23 15:06:31 1995
Path: ashpoly!cascade!transat!ukc!fennimore!tum!nkarlsson
From: nkarlsson@tum.de (Nadine Karlsson)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Feb23.150631.9791@tum.de>
Date: Thu, 23 Feb 1995 15:06:31 GMT
References: <1995Feb22.041831.5280@ox.ac.uk>
Organization: Technische Universität München
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In article <1995Feb22.041831.5280@ox.ac.uk>, lperez@ox.ac.uk (Lucia Pérez) writes:
> Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining.

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

Top-posters will be placed in my ~/.killfile without notice.

-- 
Nadine Karlsson | nkarlsson@tum.de
PGP Key fingerprint: 265D ED2D C45F EFCC
"Keep the channels open."