From rpetrov@stanford.edu Thu Apr 28 00:54:58 1994
Path: ashpoly!cascade!transat!sunet!nordrelay!stanford!rpetrov
From: rpetrov@stanford.edu (Rodrigo Petrov)
Newsgroups: comp.sys.m68k
Subject: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Apr28.005458.4732@stanford.edu>
Date: Thu, 28 Apr 1994 00:54:58 GMT
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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.

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

-- 
Rodrigo Petrov
Tape trading list upon request. SASE required for international mail.

From ebrennan@kth.se Fri Apr 29 03:13:58 1994
Path: ashpoly!cascade!transat!eunet-de!hansebox!kth!ebrennan
From: ebrennan@kth.se (Elaine Brennan)
Newsgroups: comp.sys.m68k
Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Apr29.031358.9452@kth.se>
Date: Fri, 29 Apr 1994 03:13:58 GMT
References: <1994Apr28.005458.4732@stanford.edu>
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In article <1994Apr28.005458.4732@stanford.edu>, rpetrov@stanford.edu (Rodrigo Petrov) writes:
> 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.

Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

Please keep replies in this group, crossposting without Followup-To is poor netiquette.

-- 
Elaine Brennan
Opinions expressed are solely my own and not those of Royal Institute of Technology, Stockholm.
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From dandersson@cam.ac.uk Sat Apr 30 20:41:58 1994
Path: ashpoly!cascade!transat!ukc!fennimore!cam!dandersson
From: dandersson@cam.ac.uk (Diego Andersson)
Newsgroups: comp.sys.m68k
Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Apr30.204158.4882@cam.ac.uk>
Date: Sat, 30 Apr 1994 20:41:58 GMT
References: <1994Apr28.005458.4732@stanford.edu> <1994Apr29.031358.9452@kth.se>
Organization: University of Cambridge Computer Laboratory
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In article <1994Apr29.031358.9452@kth.se>, ebrennan@kth.se (Elaine Brennan) writes:
> Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs.

-- 
Diego Andersson -- University of Cambridge Computer Laboratory
"Measuring a record you own is listening, not piracy."