From dmoreau@illinois.edu Mon Aug 28 03:26:52 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!illinois!dmoreau
From: dmoreau@illinois.edu (Dave Moreau)
Newsgroups: comp.sys.m68k
Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Aug28.032652.6104@illinois.edu>
Date: Mon, 28 Aug 1995 03:26:52 GMT
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Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes.
Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow.

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

-- 
Dave Moreau
Tape trading list upon request. SASE required for international mail.

From apopov@cmu.edu Tue Aug 29 03:52:52 1995
Path: ashpoly!cascade!bigsur!cmu!apopov
From: apopov@cmu.edu (Amy Popov)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Aug29.035252.7314@cmu.edu>
Date: Tue, 29 Aug 1995 03:52:52 GMT
References: <1995Aug28.032652.6104@illinois.edu>
Organization: Carnegie Mellon University School of CS
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In article <1995Aug28.032652.6104@illinois.edu>, dmoreau@illinois.edu (Dave Moreau) 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.

-- 
Amy Popov
Tape trading list upon request. SASE required for international mail.

From jmoreno@berkeley.edu Tue Aug 29 11:27:52 1995
Path: ashpoly!cascade!brgate!saturno!berkeley!jmoreno
From: jmoreno@berkeley.edu (Julien Moreno)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Aug29.112752.1165@berkeley.edu>
Date: Tue, 29 Aug 1995 11:27:52 GMT
References: <1995Aug28.032652.6104@illinois.edu> <1995Aug29.035252.7314@cmu.edu>
Organization: UC Berkeley Department of EECS
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In article <1995Aug29.035252.7314@cmu.edu>, apopov@cmu.edu (Amy Popov) writes:
> Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead.

Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead.

-- 
Julien Moreno -- UC Berkeley Department of EECS
"In theory there is no difference between theory and practice."