From bsouza@berkeley.edu Mon Aug 19 21:06:32 1996 Path: ashpoly!cascade!brgate!saturno!berkeley!bsouza From: bsouza@berkeley.edu (Bastien Souza) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Aug19.210632.2625@berkeley.edu> Date: Mon, 19 Aug 1996 21:06:32 GMT Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: Netscape 1.1N Lines: 11 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! -- Bastien Souza | bsouza@berkeley.edu PGP Key fingerprint: 3878 48E5 96CE 7195 "Keep the channels open." From bwatanabe@cam.ac.uk Tue Aug 20 23:55:32 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!cam!bwatanabe From: bwatanabe@cam.ac.uk (Bastien Watanabe) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Aug20.235532.9056@cam.ac.uk> Date: Tue, 20 Aug 1996 23:55:32 GMT References: <1996Aug19.210632.2625@berkeley.edu> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1996Aug19.210632.2625@berkeley.edu>, bsouza@berkeley.edu (Bastien Souza) 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. Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Bastien Watanabe Zyxel U-1496E @ 14,400 bps "Hold for relay." From kdubois@pacbell.net Wed Aug 21 07:14:32 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!pacbell!kdubois From: kdubois@pacbell.net (Kenji Dubois) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Aug21.071432.6884@pacbell.net> Date: Wed, 21 Aug 1996 07:14:32 GMT References: <1996Aug19.210632.2625@berkeley.edu> <1996Aug20.235532.9056@cam.ac.uk> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1996Aug20.235532.9056@cam.ac.uk>, bwatanabe@cam.ac.uk (Bastien Watanabe) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. > Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Kenji Dubois | kdubois@pacbell.net PGP Key fingerprint: 66A6 BBB1 84DC BE2D "Keep the channels open." From ylindqvist@uni-hamburg.de Thu Aug 22 02:47:32 1996 Path: ashpoly!cascade!brgate!saturno!uni-hamburg!ylindqvist From: ylindqvist@uni-hamburg.de (Yuki Lindqvist) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Aug22.024732.3238@uni-hamburg.de> Date: Thu, 22 Aug 1996 02:47:32 GMT References: <1996Aug19.210632.2625@berkeley.edu> <1996Aug20.235532.9056@cam.ac.uk> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Aug20.235532.9056@cam.ac.uk>, bwatanabe@cam.ac.uk (Bastien Watanabe) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. > Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Yuki Lindqvist Opinions expressed are solely my own and not those of Universität Hamburg Fachbereich Informatik. ------------------------------------------------------------ From jvasiliev@uni-hamburg.de Thu Aug 22 19:45:32 1996 Path: ashpoly!cascade!transat!ukc!fennimore!uni-hamburg!jvasiliev From: jvasiliev@uni-hamburg.de (Jens Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Aug22.194532.1810@uni-hamburg.de> Date: Thu, 22 Aug 1996 19:45:32 GMT References: <1996Aug19.210632.2625@berkeley.edu> <1996Aug20.235532.9056@cam.ac.uk> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Aug20.235532.9056@cam.ac.uk>, bwatanabe@cam.ac.uk (Bastien Watanabe) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Jens Vasiliev -- Universität Hamburg Fachbereich Informatik "The hatch is open. Is anyone listening?"