From dvasiliev@mit.edu Fri Mar 03 14:54:51 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!mit!dvasiliev From: dvasiliev@mit.edu (Dong-hyun Vasiliev) Newsgroups: comp.sys.m68k Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar03.145451.9437@mit.edu> Date: Fri, 03 Mar 1995 14:54:51 GMT Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: NewsWatcher 2.0b24 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. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Dong-hyun Vasiliev Tape trading list upon request. SASE required for international mail. From cjohansson@uu.net Sat Mar 04 03:06:51 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uu!cjohansson From: cjohansson@uu.net (Callum Johansson) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar04.030651.2698@uu.net> Date: Sat, 04 Mar 1995 03:06:51 GMT References: <1995Mar03.145451.9437@mit.edu> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Mar03.145451.9437@mit.edu>, dvasiliev@mit.edu (Dong-hyun Vasiliev) 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. -- Callum Johansson *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0 From kkim@ox.ac.uk Sat Mar 04 09:49:51 1995 Path: ashpoly!cascade!bigsur!ox!kkim From: kkim@ox.ac.uk (Kenji Kim) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar04.094951.5359@ox.ac.uk> Date: Sat, 04 Mar 1995 09:49:51 GMT References: <1995Mar03.145451.9437@mit.edu> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Mar03.145451.9437@mit.edu>, dvasiliev@mit.edu (Dong-hyun Vasiliev) writes: > 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. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Kenji Kim Opinions expressed are solely my own and not those of Oxford University Computing Laboratory. ------------------------------------------------------------ From cschneider@cmu.edu Sat Mar 04 18:55:51 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cmu!cschneider From: cschneider@cmu.edu (Camila Schneider) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar04.185551.7093@cmu.edu> Date: Sat, 04 Mar 1995 18:55:51 GMT References: <1995Mar03.145451.9437@mit.edu> <1995Mar04.030651.2698@uu.net> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995Mar04.030651.2698@uu.net>, cjohansson@uu.net (Callum Johansson) 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. -- Camila Schneider Tape trading list upon request. SASE required for international mail. From kito@rwth-aachen.de Sat Mar 04 20:36:51 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!rwth-aachen!kito From: kito@rwth-aachen.de (Kirsty Ito) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar04.203651.8517@rwth-aachen.de> Date: Sat, 04 Mar 1995 20:36:51 GMT References: <1995Mar03.145451.9437@mit.edu> <1995Mar04.094951.5359@ox.ac.uk> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N Lines: 8 In article <1995Mar04.094951.5359@ox.ac.uk>, kkim@ox.ac.uk (Kenji Kim) 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. -- Kirsty Ito Tape trading list upon request. SASE required for international mail.