From rkim@cmu.edu Sun Feb 13 04:11:54 1994
Path: ashpoly!cascade!transat!ukc!fennimore!cmu!rkim
From: rkim@cmu.edu (Raj Kim)
Newsgroups: comp.sys.m68k
Subject: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Feb13.041154.9932@cmu.edu>
Date: Sun, 13 Feb 1994 04:11:54 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.
Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow.

Anyone running this on a Quadra 840AV with the 68040?

-- 
Raj Kim | rkim@cmu.edu
PGP Key fingerprint: F497 5590 F8D2 4CC3
"Keep the channels open."

From skuznetsov@cmu.edu Tue Feb 15 04:38:54 1994
Path: ashpoly!cascade!brgate!saturno!cmu!skuznetsov
From: skuznetsov@cmu.edu (Seo-yeon Kuznetsov)
Newsgroups: comp.sys.m68k
Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Feb15.043854.2357@cmu.edu>
Date: Tue, 15 Feb 1994 04:38:54 GMT
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In article <1994Feb13.041154.9932@cmu.edu>, rkim@cmu.edu (Raj Kim) 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.

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

-- 
Seo-yeon Kuznetsov -- Carnegie Mellon University School of CS
"Extraordinary claims require extraordinary spectra."

From fokonkwo@earthlink.net Thu Feb 17 04:00:54 1994
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!earthlink!fokonkwo
From: fokonkwo@earthlink.net (Fiona Okonkwo)
Newsgroups: comp.sys.m68k
Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Feb17.040054.2233@earthlink.net>
Date: Thu, 17 Feb 1994 04:00:54 GMT
References: <1994Feb13.041154.9932@cmu.edu>
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In article <1994Feb13.041154.9932@cmu.edu>, rkim@cmu.edu (Raj Kim) writes:
> Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining.

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

Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin!

-- 
Fiona Okonkwo
Opinions expressed are solely my own and not those of EarthLink Network.
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