From asantos@cam.ac.uk Sat Jan 28 22:32:50 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cam!asantos From: asantos@cam.ac.uk (Anja Santos) Newsgroups: comp.sys.m68k Subject: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan28.223250.6136@cam.ac.uk> Date: Sat, 28 Jan 1995 22:32:50 GMT Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 10 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Anja Santos -- University of Cambridge Computer Laboratory "Hold for relay." From rmoreno@purdue.edu Mon Jan 30 23:02:50 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!purdue!rmoreno From: rmoreno@purdue.edu (Raj Moreno) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan30.230250.1290@purdue.edu> Date: Mon, 30 Jan 1995 23:02:50 GMT References: <1995Jan28.223250.6136@cam.ac.uk> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1995Jan28.223250.6136@cam.ac.uk>, asantos@cam.ac.uk (Anja Santos) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Raj Moreno Tape trading list upon request. SASE required for international mail. From afournier@kiae.su Wed Feb 01 07:47:50 1995 Path: ashpoly!cascade!transat!ukc!fennimore!kiae!afournier From: afournier@kiae.su (Andrei Fournier) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Feb01.074750.6633@kiae.su> Date: Wed, 01 Feb 1995 07:47:50 GMT References: <1995Jan28.223250.6136@cam.ac.uk> <1995Jan30.230250.1290@purdue.edu> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Jan30.230250.1290@purdue.edu>, rmoreno@purdue.edu (Raj Moreno) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Andrei Fournier "5 sigma is a discovery. 7 is a question." Sun 3/60 (SunOS 4.1.1) / AmigaOS 3.1