From jtakahashi@cern.ch Fri Aug 25 05:29:27 1995
Path: ashpoly!cascade!mxgate!coyoacan!cern!jtakahashi
From: jtakahashi@cern.ch (Joachim Takahashi)
Newsgroups: comp.sys.m68k
Subject: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Aug25.052927.4497@cern.ch>
Date: Fri, 25 Aug 1995 05:29:27 GMT
Organization: European Laboratory for Particle Physics, Geneva
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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.

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

-- 
Joachim Takahashi
Tape trading list upon request. SASE required for international mail.

From lnakamura@stanford.edu Sat Aug 26 13:58:27 1995
Path: ashpoly!cascade!transat!ukc!fennimore!stanford!lnakamura
From: lnakamura@stanford.edu (Lars Nakamura)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Aug26.135827.9193@stanford.edu>
Date: Sat, 26 Aug 1995 13:58:27 GMT
References: <1995Aug25.052927.4497@cern.ch>
Organization: Stanford University Computer Systems Lab
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In article <1995Aug25.052927.4497@cern.ch>, jtakahashi@cern.ch (Joachim Takahashi) writes:
> 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.

Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead.

-- 
Lars Nakamura
Opinions expressed are solely my own and not those of Stanford University Computer Systems Lab.
------------------------------------------------------------

From bweber@demon.co.uk Mon Aug 28 08:59:27 1995
Path: ashpoly!bigsur!pacrim!krgate!eunha!demon!bweber
From: bweber@demon.co.uk (Bastien Weber)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Aug28.085927.1947@demon.co.uk>
Date: Mon, 28 Aug 1995 08:59:27 GMT
References: <1995Aug25.052927.4497@cern.ch> <1995Aug26.135827.9193@stanford.edu>
Organization: Demon Internet Services UK
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In article <1995Aug26.135827.9193@stanford.edu>, lnakamura@stanford.edu (Lars Nakamura) writes:
> Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead.

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

-- 
Bastien Weber
Opinions expressed are solely my own and not those of Demon Internet Services UK.
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From tsmirnov@uni-hamburg.de Mon Aug 28 18:10:27 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!uni-hamburg!tsmirnov
From: tsmirnov@uni-hamburg.de (Tomas Smirnov)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Aug28.181027.8812@uni-hamburg.de>
Date: Mon, 28 Aug 1995 18:10:27 GMT
References: <1995Aug25.052927.4497@cern.ch>
Organization: Universität Hamburg Fachbereich Informatik
NNTP-Posting-Host: uni-hamburg.de
X-Newsreader: WinVN 0.99.5
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In article <1995Aug25.052927.4497@cern.ch>, jtakahashi@cern.ch (Joachim Takahashi) writes:
> 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.

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

My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise!

-- 
=== Tomas Smirnov ===
Dept of Electrical Engineering, Universität Hamburg Fachbereich Informatik
"There are 14 nodes and only 10 countries. Count again."