From dlee@demon.co.uk Mon Jul 18 19:14:42 1994
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!demon!dlee
From: dlee@demon.co.uk (Diego Lee)
Newsgroups: comp.sys.m68k
Subject: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Jul18.191442.9662@demon.co.uk>
Date: Mon, 18 Jul 1994 19:14:42 GMT
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Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes.
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?

-- 
Diego Lee
Tape trading list upon request. SASE required for international mail.

From fnilsson@clari.net Tue Jul 19 05:02:42 1994
Path: ashpoly!bigsur!pacrim!krgate!eunha!clari!fnilsson
From: fnilsson@clari.net (Fiona Nilsson)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Jul19.050242.8961@clari.net>
Date: Tue, 19 Jul 1994 05:02:42 GMT
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In article <1994Jul18.191442.9662@demon.co.uk>, dlee@demon.co.uk (Diego Lee) 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.

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

From jivanov@hanse.de Tue Jul 19 19:38:42 1994
Path: ashpoly!cascade!brgate!saturno!hanse!jivanov
From: jivanov@hanse.de (Jens Ivanov)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Jul19.193842.4814@hanse.de>
Date: Tue, 19 Jul 1994 19:38:42 GMT
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In article <1994Jul19.050242.8961@clari.net>, fnilsson@clari.net (Fiona Nilsson) writes:
> Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

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

-- 
Jens Ivanov
Tape trading list upon request. SASE required for international mail.

From ahernandez@kth.se Wed Jul 20 19:33:42 1994
Path: ashpoly!cascade!mxgate!coyoacan!kth!ahernandez
From: ahernandez@kth.se (Amy Hernández)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Jul20.193342.6560@kth.se>
Date: Wed, 20 Jul 1994 19:33:42 GMT
References: <1994Jul18.191442.9662@demon.co.uk> <1994Jul19.050242.8961@clari.net> <1994Jul19.193842.4814@hanse.de>
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In article <1994Jul19.193842.4814@hanse.de>, jivanov@hanse.de (Jens Ivanov) writes:
> The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds.

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

Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs.

-- 
Amy Hernández -- Royal Institute of Technology, Stockholm
"Tape doesn't lie at 02:14. Ears do."