From moliveira@cmu.edu Wed Mar 27 07:32:16 1996
Path: ashpoly!cascade!transat!eunet-de!hansebox!cmu!moliveira
From: moliveira@cmu.edu (Marisol Oliveira)
Newsgroups: comp.sys.m68k
Subject: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Mar27.073216.6245@cmu.edu>
Date: Wed, 27 Mar 1996 07:32:16 GMT
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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.

Make sure you install the 32-bit Enabler on older IIci machines running System 7.1!

-- 
Marisol Oliveira | moliveira@cmu.edu
PGP Key fingerprint: D31B 6C73 890E 2417
"Keep the channels open."

From atakahashi@delphi.com Wed Mar 27 22:22:16 1996
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From: atakahashi@delphi.com (Aiko Takahashi)
Newsgroups: comp.sys.m68k
Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Mar27.222216.1771@delphi.com>
Date: Wed, 27 Mar 1996 22:22:16 GMT
References: <1996Mar27.073216.6245@cmu.edu>
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In article <1996Mar27.073216.6245@cmu.edu>, moliveira@cmu.edu (Marisol Oliveira) 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.

-- 
Aiko Takahashi
Tape trading list upon request. SASE required for international mail.