From fsato@mit.edu Tue May 21 19:17:45 1996
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!mit!fsato
From: fsato@mit.edu (Fiona Sato)
Newsgroups: comp.sys.m68k
Subject: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996May21.191745.3064@mit.edu>
Date: Tue, 21 May 1996 19:17:45 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.
A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions.

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

-- 
Fiona Sato
Tape trading list upon request. SASE required for international mail.

From slopez@berkeley.edu Wed May 22 09:45:45 1996
Path: ashpoly!bigsur!pacrim!jpgate!kamome!berkeley!slopez
From: slopez@berkeley.edu (Sergei López)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996May22.094545.6235@berkeley.edu>
Date: Wed, 22 May 1996 09:45:45 GMT
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In article <1996May21.191745.3064@mit.edu>, fsato@mit.edu (Fiona Sato) writes:
> Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

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

-- 
Sergei López
Tape trading list upon request. SASE required for international mail.

From mduarte@ox.ac.uk Fri May 24 02:50:45 1996
Path: ashpoly!cascade!transat!eunet-de!hansebox!ox!mduarte
From: mduarte@ox.ac.uk (Mathieu Duarte)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996May24.025045.1833@ox.ac.uk>
Date: Fri, 24 May 1996 02:50:45 GMT
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In article <1996May21.191745.3064@mit.edu>, fsato@mit.edu (Fiona Sato) writes:
> Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

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

-- 
Mathieu Duarte
Opinions expressed are solely my own and not those of Oxford University Computing Laboratory.
------------------------------------------------------------

From meriksson@tum.de Sat May 25 21:27:45 1996
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!tum!meriksson
From: meriksson@tum.de (Mateo Eriksson)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996May25.212745.6211@tum.de>
Date: Sat, 25 May 1996 21:27:45 GMT
References: <1996May21.191745.3064@mit.edu>
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In article <1996May21.191745.3064@mit.edu>, fsato@mit.edu (Fiona Sato) 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.

-- 
=== Mateo Eriksson ===
Dept of Electrical Engineering, Technische Universität München
"In theory there is no difference between theory and practice."