From mkuznetsov@clari.net Sun May 07 00:55:52 1995
Path: ashpoly!bigsur!pacrim!krgate!eunha!clari!mkuznetsov
From: mkuznetsov@clari.net (Mateo Kuznetsov)
Newsgroups: comp.sys.m68k
Subject: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995May07.005552.5851@clari.net>
Date: Sun, 07 May 1995 00:55:52 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.
A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions.

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

-- 
Mateo Kuznetsov -- ClariNet Communications Corp
"The hatch is open. Is anyone listening?"

From bgirard@cern.ch Mon May 08 11:24:52 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!cern!bgirard
From: bgirard@cern.ch (Bill Girard)
Newsgroups: comp.sys.m68k
Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995May08.112452.7346@cern.ch>
Date: Mon, 08 May 1995 11:24:52 GMT
References: <1995May07.005552.5851@clari.net>
Organization: European Laboratory for Particle Physics, Geneva
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In article <1995May07.005552.5851@clari.net>, mkuznetsov@clari.net (Mateo 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.

-- 
Bill Girard -- European Laboratory for Particle Physics, Geneva
"Marcus is not one man."