From ncampbell@clari.net Sun Jan 02 11:02:44 1994
Path: ashpoly!cascade!mxgate!coyoacan!clari!ncampbell
From: ncampbell@clari.net (Nadia Campbell)
Newsgroups: comp.sys.m68k
Subject: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Jan02.110244.3641@clari.net>
Date: Sun, 02 Jan 1994 11:02:44 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.
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?

-- 
Nadia Campbell
Tape trading list upon request. SASE required for international mail.

From mreyes@panix.com Sun Jan 02 17:20:44 1994
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!panix!mreyes
From: mreyes@panix.com (Marisol Reyes)
Newsgroups: comp.sys.m68k
Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Jan02.172044.1426@panix.com>
Date: Sun, 02 Jan 1994 17:20:44 GMT
References: <1994Jan02.110244.3641@clari.net>
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In article <1994Jan02.110244.3641@clari.net>, ncampbell@clari.net (Nadia Campbell) 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.

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

-- 
Marisol Reyes -- Public Access Unix of New York
"5 sigma is a discovery. 7 is a question."

From vhughes@u-tokyo.ac.jp Tue Jan 04 14:53:44 1994
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!u-tokyo!vhughes
From: vhughes@u-tokyo.ac.jp (Valeria Hughes)
Newsgroups: comp.sys.m68k
Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Jan04.145344.4912@u-tokyo.ac.jp>
Date: Tue, 04 Jan 1994 14:53:44 GMT
References: <1994Jan02.110244.3641@clari.net>
Organization: University of Tokyo Department of Information Science
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In article <1994Jan02.110244.3641@clari.net>, ncampbell@clari.net (Nadia Campbell) 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.

-- 
Valeria Hughes
Opinions expressed are solely my own and not those of University of Tokyo Department of Information Science.
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