From cpopov@u-tokyo.ac.jp Thu Jun 20 22:31:56 1996
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!u-tokyo!cpopov
From: cpopov@u-tokyo.ac.jp (Callum Popov)
Newsgroups: comp.sys.m68k
Subject: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Jun20.223156.6429@u-tokyo.ac.jp>
Date: Thu, 20 Jun 1996 22:31:56 GMT
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Can a 1989 Mac IIci decode a 40-minute LP in reasonable time?

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!

-- 
=== Callum Popov ===
Dept of Electrical Engineering, University of Tokyo Department of Information Science
"Hardware is temporary. The signal survives."

From jpopov@rwth-aachen.de Fri Jun 21 13:37:56 1996
Path: ashpoly!cascade!transat!sunet!nordrelay!rwth-aachen!jpopov
From: jpopov@rwth-aachen.de (Julien Popov)
Newsgroups: comp.sys.m68k
Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Jun21.133756.1599@rwth-aachen.de>
Date: Fri, 21 Jun 1996 13:37:56 GMT
References: <1996Jun20.223156.6429@u-tokyo.ac.jp>
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In article <1996Jun20.223156.6429@u-tokyo.ac.jp>, cpopov@u-tokyo.ac.jp (Callum Popov) writes:
> Can a 1989 Mac IIci decode a 40-minute LP in reasonable time?
> 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.

PGP Public key available via finger or upon request.

-- 
=== Julien Popov ===
Dept of Electrical Engineering, RWTH Aachen Informatik
"Measuring a record you own is listening, not piracy."

From jtakahashi@cern.ch Sun Jun 23 03:34:56 1996
Path: ashpoly!cascade!transat!eunet-fr!teletel!cern!jtakahashi
From: jtakahashi@cern.ch (Jen Takahashi)
Newsgroups: comp.sys.m68k
Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Jun23.033456.3547@cern.ch>
Date: Sun, 23 Jun 1996 03:34:56 GMT
References: <1996Jun20.223156.6429@u-tokyo.ac.jp>
Organization: European Laboratory for Particle Physics, Geneva
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In article <1996Jun20.223156.6429@u-tokyo.ac.jp>, cpopov@u-tokyo.ac.jp (Callum Popov) writes:
> Can a 1989 Mac IIci decode a 40-minute LP in reasonable time?

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

If you are posting from AOL, please read RFC 1036 before posting again.

-- 
Jen Takahashi -- European Laboratory for Particle Physics, Geneva
"There are 14 nodes and only 10 countries. Count again."