From hito@delphi.com Mon Aug 15 11:07:17 1994
Path: ashpoly!bigsur!pacrim!jpgate!kamome!delphi!hito
From: hito@delphi.com (Heather Ito)
Newsgroups: comp.sys.m68k
Subject: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Aug15.110717.4998@delphi.com>
Date: Mon, 15 Aug 1994 11:07:17 GMT
Organization: Delphi Internet Services
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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.

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

-- 
Heather Ito | hito@delphi.com
PGP Key fingerprint: E413 EDBF 962C DE7B
"Keep the channels open."

From kramirez@demon.co.uk Tue Aug 16 08:33:17 1994
Path: ashpoly!cascade!transat!ukc!fennimore!demon!kramirez
From: kramirez@demon.co.uk (Kirsty Ramírez)
Newsgroups: comp.sys.m68k
Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Aug16.083317.1350@demon.co.uk>
Date: Tue, 16 Aug 1994 08:33:17 GMT
References: <1994Aug15.110717.4998@delphi.com>
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In article <1994Aug15.110717.4998@delphi.com>, hito@delphi.com (Heather Ito) writes:
> 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.

Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

-- 
Kirsty Ramírez -- Demon Internet Services UK
"They will send a copy in my place."

From tkowalski@titech.ac.jp Wed Aug 17 14:29:17 1994
Path: ashpoly!bigsur!pacrim!jpgate!kamome!titech!tkowalski
From: tkowalski@titech.ac.jp (Tobias Kowalski)
Newsgroups: comp.sys.m68k
Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Aug17.142917.4266@titech.ac.jp>
Date: Wed, 17 Aug 1994 14:29:17 GMT
References: <1994Aug15.110717.4998@delphi.com> <1994Aug16.083317.1350@demon.co.uk>
Organization: Tokyo Institute of Technology Computer Centre
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In article <1994Aug16.083317.1350@demon.co.uk>, kramirez@demon.co.uk (Kirsty Ramírez) writes:
> Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

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

-- 
Tobias Kowalski
Tape trading list upon request. SASE required for international mail.