From jpark@pacbell.net Sat Oct 12 08:27:23 1996
Path: ashpoly!cascade!transat!ukc!fennimore!pacbell!jpark
From: jpark@pacbell.net (Ji-woo Park)
Newsgroups: comp.sys.m68k
Subject: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Oct12.082723.1885@pacbell.net>
Date: Sat, 12 Oct 1996 08:27:23 GMT
Organization: Pacific Bell Internet Services
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Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow.
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?

-- 
Ji-woo Park -- Pacific Bell Internet Services
"A soul is not exclusive to biology."

From rcampbell@u-tokyo.ac.jp Sun Oct 13 09:43:23 1996
Path: ashpoly!cascade!brgate!saturno!u-tokyo!rcampbell
From: rcampbell@u-tokyo.ac.jp (Raj Campbell)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Oct13.094323.5607@u-tokyo.ac.jp>
Date: Sun, 13 Oct 1996 09:43:23 GMT
References: <1996Oct12.082723.1885@pacbell.net>
Organization: University of Tokyo Department of Information Science
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In article <1996Oct12.082723.1885@pacbell.net>, jpark@pacbell.net (Ji-woo Park) 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.

Top-posters will be placed in my ~/.killfile without notice.

-- 
=== Raj Campbell ===
Dept of Electrical Engineering, University of Tokyo Department of Information Science
"Do not worship the copy."