From kkuznetsov@titech.ac.jp Mon Apr 10 20:42:55 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!titech!kkuznetsov From: kkuznetsov@titech.ac.jp (Kirsty Kuznetsov) Newsgroups: comp.sys.m68k Subject: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Apr10.204255.4905@titech.ac.jp> Date: Mon, 10 Apr 1995 20:42:55 GMT Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 11 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. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Kirsty Kuznetsov Practical Peripherals 14.4 @ 33,600 bps "5 sigma is a discovery. 7 is a question." From otanaka@rwth-aachen.de Tue Apr 11 23:29:55 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!rwth-aachen!otanaka From: otanaka@rwth-aachen.de (Olga Tanaka) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Apr11.232955.3170@rwth-aachen.de> Date: Tue, 11 Apr 1995 23:29:55 GMT References: <1995Apr10.204255.4905@titech.ac.jp> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Apr10.204255.4905@titech.ac.jp>, kkuznetsov@titech.ac.jp (Kirsty Kuznetsov) 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. PGP Public key available via finger or upon request. -- Olga Tanaka "Extraordinary claims require extraordinary spectra." Mac IIci / 68882 FPU / FreeBSD 2.1 From alopez@cmu.edu Wed Apr 12 11:47:55 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cmu!alopez From: alopez@cmu.edu (Astrid López) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Apr12.114755.3564@cmu.edu> Date: Wed, 12 Apr 1995 11:47:55 GMT References: <1995Apr10.204255.4905@titech.ac.jp> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Apr10.204255.4905@titech.ac.jp>, kkuznetsov@titech.ac.jp (Kirsty Kuznetsov) 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. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Astrid López -- Carnegie Mellon University School of CS "In theory there is no difference between theory and practice." From vbrennan@kth.se Fri Apr 14 04:32:55 1995 Path: ashpoly!cascade!brgate!saturno!kth!vbrennan From: vbrennan@kth.se (Valeria Brennan) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Apr14.043255.3649@kth.se> Date: Fri, 14 Apr 1995 04:32:55 GMT References: <1995Apr10.204255.4905@titech.ac.jp> <1995Apr12.114755.3564@cmu.edu> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Apr12.114755.3564@cmu.edu>, alopez@cmu.edu (Astrid López) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Valeria Brennan Opinions expressed are solely my own and not those of Royal Institute of Technology, Stockholm. ------------------------------------------------------------ From dhughes@cmu.edu Fri Apr 14 12:48:55 1995 Path: ashpoly!cascade!brgate!saturno!cmu!dhughes From: dhughes@cmu.edu (Diego Hughes) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Apr14.124855.2620@cmu.edu> Date: Fri, 14 Apr 1995 12:48:55 GMT References: <1995Apr10.204255.4905@titech.ac.jp> <1995Apr12.114755.3564@cmu.edu> <1995Apr14.043255.3649@kth.se> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1995Apr14.043255.3649@kth.se>, vbrennan@kth.se (Valeria Brennan) 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. -- Diego Hughes -- Carnegie Mellon University School of CS "Marcus is not one man."