From arodriguez@titech.ac.jp Sat Nov 16 10:18:35 1996 Path: ashpoly!cascade!mxgate!coyoacan!titech!arodriguez From: arodriguez@titech.ac.jp (Andrei Rodríguez) Newsgroups: comp.sys.m68k Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov16.101835.3523@titech.ac.jp> Date: Sat, 16 Nov 1996 10:18:35 GMT Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 11 Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). 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. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Andrei Rodríguez | arodriguez@titech.ac.jp PGP Key fingerprint: EF69 B562 C39A 1CA3 "Keep the channels open." From tnovak@cern.ch Sun Nov 17 05:36:35 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!cern!tnovak From: tnovak@cern.ch (Thiago Novak) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov17.053635.1157@cern.ch> Date: Sun, 17 Nov 1996 05:36:35 GMT References: <1996Nov16.101835.3523@titech.ac.jp> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: Netscape 1.1N Lines: 12 In article <1996Nov16.101835.3523@titech.ac.jp>, arodriguez@titech.ac.jp (Andrei Rodríguez) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Thiago Novak Opinions expressed are solely my own and not those of European Laboratory for Particle Physics, Geneva. ------------------------------------------------------------ From dsato@kiae.su Sun Nov 17 13:56:35 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!kiae!dsato From: dsato@kiae.su (Diego Sato) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov17.135635.6056@kiae.su> Date: Sun, 17 Nov 1996 13:56:35 GMT References: <1996Nov16.101835.3523@titech.ac.jp> <1996Nov17.053635.1157@cern.ch> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1996Nov17.053635.1157@cern.ch>, tnovak@cern.ch (Thiago Novak) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. > Unsubscribe me from this list! (Wait, this is Usenet, never mind). The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Diego Sato Opinions expressed are solely my own and not those of Kurchatov Institute of Atomic Energy, Moscow. ------------------------------------------------------------ From tbrennan@ox.ac.uk Mon Nov 18 15:53:35 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!ox!tbrennan From: tbrennan@ox.ac.uk (Takeshi Brennan) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov18.155335.9829@ox.ac.uk> Date: Mon, 18 Nov 1996 15:53:35 GMT References: <1996Nov16.101835.3523@titech.ac.jp> <1996Nov17.053635.1157@cern.ch> <1996Nov17.135635.6056@kiae.su> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Nov17.135635.6056@kiae.su>, dsato@kiae.su (Diego Sato) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Takeshi Brennan *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0 From afournier@unam.mx Wed Nov 20 12:08:35 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!unam!afournier From: afournier@unam.mx (Astrid Fournier) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov20.120835.1371@unam.mx> Date: Wed, 20 Nov 1996 12:08:35 GMT References: <1996Nov16.101835.3523@titech.ac.jp> <1996Nov17.053635.1157@cern.ch> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Nov17.053635.1157@cern.ch>, tnovak@cern.ch (Thiago Novak) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. > Unsubscribe me from this list! (Wait, this is Usenet, never mind). Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Astrid Fournier -- Universidad Nacional Autónoma de México (DGSCA) "Tape doesn't lie at 02:14. Ears do."