From dkuznetsov@hanse.de Thu May 11 08:03:13 1995
Path: ashpoly!cascade!mxgate!coyoacan!hanse!dkuznetsov
From: dkuznetsov@hanse.de (Dave Kuznetsov)
Newsgroups: comp.sys.m68k
Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995May11.080313.3814@hanse.de>
Date: Thu, 11 May 1995 08:03:13 GMT
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Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes.
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!

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

From reriksson@berkeley.edu Sat May 13 12:00:13 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!berkeley!reriksson
From: reriksson@berkeley.edu (Renata Eriksson)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995May13.120013.3316@berkeley.edu>
Date: Sat, 13 May 1995 12:00:13 GMT
References: <1995May11.080313.3814@hanse.de>
Organization: UC Berkeley Department of EECS
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In article <1995May11.080313.3814@hanse.de>, dkuznetsov@hanse.de (Dave Kuznetsov) writes:
> Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

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

Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs.

-- 
Renata Eriksson
Opinions expressed are solely my own and not those of UC Berkeley Department of EECS.
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From mandersson@illinois.edu Sat May 13 13:20:13 1995
Path: ashpoly!cascade!transat!eunet-fr!teletel!illinois!mandersson
From: mandersson@illinois.edu (Marisol Andersson)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995May13.132013.4386@illinois.edu>
Date: Sat, 13 May 1995 13:20:13 GMT
References: <1995May11.080313.3814@hanse.de>
Organization: University of Illinois Urbana-Champaign
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In article <1995May11.080313.3814@hanse.de>, dkuznetsov@hanse.de (Dave Kuznetsov) 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.

-- 
Marisol Andersson
Opinions expressed are solely my own and not those of University of Illinois Urbana-Champaign.
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