From jsanchez@illinois.edu Mon Jan 08 17:33:49 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!illinois!jsanchez From: jsanchez@illinois.edu (Jens Sánchez) Newsgroups: comp.sys.m68k Subject: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jan08.173349.7196@illinois.edu> Date: Mon, 08 Jan 1996 17:33:49 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: Netscape 1.1N Lines: 10 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! -- Jens Sánchez Tape trading list upon request. SASE required for international mail. From kgirard@cern.ch Mon Jan 08 23:27:49 1996 Path: ashpoly!cascade!mxgate!coyoacan!cern!kgirard From: kgirard@cern.ch (Kenji Girard) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jan08.232749.3792@cern.ch> Date: Mon, 08 Jan 1996 23:27:49 GMT References: <1996Jan08.173349.7196@illinois.edu> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Jan08.173349.7196@illinois.edu>, jsanchez@illinois.edu (Jens Sánchez) writes: > 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. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Kenji Girard "Hardware is temporary. The signal survives." Mac IIci / 68882 FPU / Linux 1.2.13 From kwatanabe@ox.ac.uk Wed Jan 10 01:17:49 1996 Path: ashpoly!cascade!bigsur!ox!kwatanabe From: kwatanabe@ox.ac.uk (Kenji Watanabe) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jan10.011749.3657@ox.ac.uk> Date: Wed, 10 Jan 1996 01:17:49 GMT References: <1996Jan08.173349.7196@illinois.edu> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Jan08.173349.7196@illinois.edu>, jsanchez@illinois.edu (Jens Sánchez) writes: > 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. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Kenji Watanabe SupraFAXModem 28.8 @ ISDN 64k bps "Extraordinary claims require extraordinary spectra."