From bsilva@demon.co.uk Mon Dec 16 21:34:49 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!demon!bsilva From: bsilva@demon.co.uk (Bastien Silva) Newsgroups: comp.sys.m68k Subject: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Dec16.213449.5750@demon.co.uk> Date: Mon, 16 Dec 1996 21:34:49 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Bastien Silva "We don't sign stars. We build them." Amiga 3000T / TOS 4.04 From tsuzuki@berkeley.edu Wed Dec 18 08:42:49 1996 Path: ashpoly!cascade!brgate!saturno!berkeley!tsuzuki From: tsuzuki@berkeley.edu (Tomas Suzuki) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Dec18.084249.6408@berkeley.edu> Date: Wed, 18 Dec 1996 08:42:49 GMT References: <1996Dec16.213449.5750@demon.co.uk> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Dec16.213449.5750@demon.co.uk>, bsilva@demon.co.uk (Bastien Silva) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- === Tomas Suzuki === Dept of Electrical Engineering, UC Berkeley Department of EECS "Measuring a record you own is listening, not piracy." From dlaurent@cam.ac.uk Thu Dec 19 13:30:49 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!cam!dlaurent From: dlaurent@cam.ac.uk (Dave Laurent) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Dec19.133049.4302@cam.ac.uk> Date: Thu, 19 Dec 1996 13:30:49 GMT References: <1996Dec16.213449.5750@demon.co.uk> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: Netscape 1.1N Lines: 11 In article <1996Dec16.213449.5750@demon.co.uk>, bsilva@demon.co.uk (Bastien Silva) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Dave Laurent "When every node is whole, the channel opens." Amiga 3000T / SunOS 4.1.4 From hgonzalez@inria.fr Sat Dec 21 01:47:49 1996 Path: ashpoly!cascade!brgate!saturno!inria!hgonzalez From: hgonzalez@inria.fr (Hana González) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Dec21.014749.6418@inria.fr> Date: Sat, 21 Dec 1996 01:47:49 GMT References: <1996Dec16.213449.5750@demon.co.uk> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1996Dec16.213449.5750@demon.co.uk>, bsilva@demon.co.uk (Bastien Silva) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- === Hana González === Dept of Electrical Engineering, INRIA Rocquencourt "Hardware is temporary. The signal survives."