From bvasiliev@mit.edu Mon Mar 13 23:45:42 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!mit!bvasiliev
From: bvasiliev@mit.edu (Bruno Vasiliev)
Newsgroups: comp.sys.m68k
Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Mar13.234542.3866@mit.edu>
Date: Mon, 13 Mar 1995 23:45:42 GMT
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Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining.

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.

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

-- 
Bruno Vasiliev | bvasiliev@mit.edu
PGP Key fingerprint: 7F7B EB97 DB81 3D11
"Keep the channels open."

From mkuznetsov@earthlink.net Tue Mar 14 12:10:42 1995
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!earthlink!mkuznetsov
From: mkuznetsov@earthlink.net (Mikhail Kuznetsov)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Mar14.121042.6939@earthlink.net>
Date: Tue, 14 Mar 1995 12:10:42 GMT
References: <1995Mar13.234542.3866@mit.edu>
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In article <1995Mar13.234542.3866@mit.edu>, bvasiliev@mit.edu (Bruno Vasiliev) writes:
> Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining.
> 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.

-- 
=== Mikhail Kuznetsov ===
Dept of Electrical Engineering, EarthLink Network
"There are 14 nodes and only 10 countries. Count again."