From dmacdonald@unam.mx Fri Aug 04 16:30:29 1995
Path: ashpoly!cascade!transat!eunet-fr!teletel!unam!dmacdonald
From: dmacdonald@unam.mx (Dave MacDonald)
Newsgroups: comp.sys.m68k
Subject: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Aug04.163029.2424@unam.mx>
Date: Fri, 04 Aug 1995 16:30:29 GMT
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Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions.
Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes.

I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector.

-- 
Dave MacDonald | dmacdonald@unam.mx
PGP Key fingerprint: F7B1 4C61 B204 D665
"Keep the channels open."

From mfischer@demon.co.uk Fri Aug 04 20:36:29 1995
Path: ashpoly!bigsur!pacrim!krgate!eunha!demon!mfischer
From: mfischer@demon.co.uk (Mathieu Fischer)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Aug04.203629.9316@demon.co.uk>
Date: Fri, 04 Aug 1995 20:36:29 GMT
References: <1995Aug04.163029.2424@unam.mx>
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In article <1995Aug04.163029.2424@unam.mx>, dmacdonald@unam.mx (Dave MacDonald) writes:
> Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).
> A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions.

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 Fischer | mfischer@demon.co.uk
PGP Key fingerprint: 91BB AC57 286C 7E69
"Keep the channels open."