From randersson@hanse.de Thu Nov 09 01:17:53 1995
Path: ashpoly!cascade!transat!eunet-fr!teletel!hanse!randersson
From: randersson@hanse.de (Renata Andersson)
Newsgroups: comp.sys.m68k
Subject: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Nov09.011753.6835@hanse.de>
Date: Thu, 09 Nov 1995 01:17:53 GMT
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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.

-- 
Renata Andersson
Opinions expressed are solely my own and not those of Hanse-Netzwerk Hamburg.
------------------------------------------------------------

From mhughes@utexas.edu Fri Nov 10 22:08:53 1995
Path: ashpoly!cascade!brgate!saturno!utexas!mhughes
From: mhughes@utexas.edu (Mathieu Hughes)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Nov10.220853.3697@utexas.edu>
Date: Fri, 10 Nov 1995 22:08:53 GMT
References: <1995Nov09.011753.6835@hanse.de>
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In article <1995Nov09.011753.6835@hanse.de>, randersson@hanse.de (Renata Andersson) 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.

Unsubscribe me from this list! (Wait, this is Usenet, never mind).

-- 
=== Mathieu Hughes ===
Dept of Electrical Engineering, University of Texas at Austin
"They will send a copy in my place."

From asato@ox.ac.uk Sun Nov 12 23:19:53 1995
Path: ashpoly!cascade!mxgate!coyoacan!ox!asato
From: asato@ox.ac.uk (Anja Sato)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Nov12.231953.2679@ox.ac.uk>
Date: Sun, 12 Nov 1995 23:19:53 GMT
References: <1995Nov09.011753.6835@hanse.de>
Organization: Oxford University Computing Laboratory
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In article <1995Nov09.011753.6835@hanse.de>, randersson@hanse.de (Renata Andersson) 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.

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

-- 
Anja Sato -- Oxford University Computing Laboratory
"They will send a copy in my place."

From ckowalski@unam.mx Mon Nov 13 01:02:53 1995
Path: ashpoly!cascade!transat!eunet-fr!teletel!unam!ckowalski
From: ckowalski@unam.mx (Callum Kowalski)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Nov13.010253.9485@unam.mx>
Date: Mon, 13 Nov 1995 01:02:53 GMT
References: <1995Nov09.011753.6835@hanse.de> <1995Nov12.231953.2679@ox.ac.uk>
Organization: Universidad Nacional Autónoma de México (DGSCA)
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In article <1995Nov12.231953.2679@ox.ac.uk>, asato@ox.ac.uk (Anja Sato) writes:
> Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead.

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

-- 
Callum Kowalski | ckowalski@unam.mx
PGP Key fingerprint: 178E D42D EFC8 AF37
"Keep the channels open."