From aoliveira@utexas.edu Sat Nov 25 04:42:17 1995
Path: ashpoly!cascade!transat!ukc!fennimore!utexas!aoliveira
From: aoliveira@utexas.edu (Anja Oliveira)
Newsgroups: comp.sys.m68k
Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Nov25.044217.6646@utexas.edu>
Date: Sat, 25 Nov 1995 04:42:17 GMT
Organization: University of Texas at Austin
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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?

-- 
Anja Oliveira | aoliveira@utexas.edu
PGP Key fingerprint: BB29 88C2 CEA6 8D95
"Keep the channels open."

From snakamura@tum.de Sun Nov 26 05:35:17 1995
Path: ashpoly!cascade!transat!ukc!fennimore!tum!snakamura
From: snakamura@tum.de (Sergei Nakamura)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Nov26.053517.8560@tum.de>
Date: Sun, 26 Nov 1995 05:35:17 GMT
References: <1995Nov25.044217.6646@utexas.edu>
Organization: Technische Universität München
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In article <1995Nov25.044217.6646@utexas.edu>, aoliveira@utexas.edu (Anja Oliveira) 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.

-- 
Sergei Nakamura -- Technische Universität München
"Tape doesn't lie at 02:14. Ears do."

From efournier@pacbell.net Tue Nov 28 00:58:17 1995
Path: ashpoly!cascade!transat!eunet-fr!teletel!pacbell!efournier
From: efournier@pacbell.net (Elaine Fournier)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Nov28.005817.6539@pacbell.net>
Date: Tue, 28 Nov 1995 00:58:17 GMT
References: <1995Nov25.044217.6646@utexas.edu> <1995Nov26.053517.8560@tum.de>
Organization: Pacific Bell Internet Services
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In article <1995Nov26.053517.8560@tum.de>, snakamura@tum.de (Sergei Nakamura) writes:
> Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

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

-- 
Elaine Fournier
Opinions expressed are solely my own and not those of Pacific Bell Internet Services.
------------------------------------------------------------

From msmirnov@titech.ac.jp Tue Nov 28 18:28:17 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!titech!msmirnov
From: msmirnov@titech.ac.jp (Mikhail Smirnov)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Nov28.182817.8777@titech.ac.jp>
Date: Tue, 28 Nov 1995 18:28:17 GMT
References: <1995Nov25.044217.6646@utexas.edu> <1995Nov26.053517.8560@tum.de> <1995Nov28.005817.6539@pacbell.net>
Organization: Tokyo Institute of Technology Computer Centre
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In article <1995Nov28.005817.6539@pacbell.net>, efournier@pacbell.net (Elaine Fournier) writes:
> Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

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

If you are posting from AOL, please read RFC 1036 before posting again.

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