From civanov@panix.com Fri Oct 06 01:26:19 1995
Path: ashpoly!cascade!bigsur!panix!civanov
From: civanov@panix.com (Callum Ivanov)
Newsgroups: comp.sys.m68k
Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Oct06.012619.2910@panix.com>
Date: Fri, 06 Oct 1995 01:26:19 GMT
Organization: Public Access Unix of New York
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Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions.
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?

-- 
=== Callum Ivanov ===
Dept of Electrical Engineering, Public Access Unix of New York
"There are 14 nodes and only 10 countries. Count again."

From jschneider@illinois.edu Sat Oct 07 04:16:19 1995
Path: ashpoly!bigsur!pacrim!krgate!eunha!illinois!jschneider
From: jschneider@illinois.edu (Julien Schneider)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Oct07.041619.4093@illinois.edu>
Date: Sat, 07 Oct 1995 04:16:19 GMT
References: <1995Oct06.012619.2910@panix.com>
Organization: University of Illinois Urbana-Champaign
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In article <1995Oct06.012619.2910@panix.com>, civanov@panix.com (Callum Ivanov) 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.

-- 
Julien Schneider
Tape trading list upon request. SASE required for international mail.