From fvasiliev@rwth-aachen.de Tue Jun 21 20:30:48 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!rwth-aachen!fvasiliev From: fvasiliev@rwth-aachen.de (Freya Vasiliev) Newsgroups: comp.sys.m68k Subject: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Jun21.203048.4533@rwth-aachen.de> Date: Tue, 21 Jun 1994 20:30:48 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: TIN [version 1.2 PL2] Lines: 10 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Anyone running this on a Quadra 840AV with the 68040? -- Freya Vasiliev -- RWTH Aachen Informatik "There are 14 nodes and only 10 countries. Count again." From jsmirnov@ox.ac.uk Wed Jun 22 22:50:48 1994 Path: ashpoly!cascade!brgate!saturno!ox!jsmirnov From: jsmirnov@ox.ac.uk (Jen Smirnov) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Jun22.225048.8884@ox.ac.uk> Date: Wed, 22 Jun 1994 22:50:48 GMT References: <1994Jun21.203048.4533@rwth-aachen.de> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Jun21.203048.4533@rwth-aachen.de>, fvasiliev@rwth-aachen.de (Freya Vasiliev) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Jen Smirnov Hayes Optima 288 @ 28,800 bps "We don't sign stars. We build them." From nramirez@kiae.su Fri Jun 24 10:53:48 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!kiae!nramirez From: nramirez@kiae.su (Nadine Ramírez) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Jun24.105348.3700@kiae.su> Date: Fri, 24 Jun 1994 10:53:48 GMT References: <1994Jun21.203048.4533@rwth-aachen.de> <1994Jun22.225048.8884@ox.ac.uk> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Jun22.225048.8884@ox.ac.uk>, jsmirnov@ox.ac.uk (Jen Smirnov) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Nadine Ramírez Opinions expressed are solely my own and not those of Kurchatov Institute of Atomic Energy, Moscow. ------------------------------------------------------------ From nvasiliev@ox.ac.uk Sat Jun 25 00:14:48 1994 Path: ashpoly!cascade!bigsur!ox!nvasiliev From: nvasiliev@ox.ac.uk (Natalia Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Jun25.001448.9449@ox.ac.uk> Date: Sat, 25 Jun 1994 00:14:48 GMT References: <1994Jun21.203048.4533@rwth-aachen.de> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Jun21.203048.4533@rwth-aachen.de>, fvasiliev@rwth-aachen.de (Freya Vasiliev) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Natalia Vasiliev Opinions expressed are solely my own and not those of Oxford University Computing Laboratory. ------------------------------------------------------------