From breyes@kth.se Thu Feb 23 08:30:10 1995 Path: ashpoly!cascade!transat!ukc!fennimore!kth!breyes From: breyes@kth.se (Brian Reyes) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Feb23.083010.5134@kth.se> Date: Thu, 23 Feb 1995 08:30:10 GMT Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: Netscape 1.1N 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. -- Brian Reyes *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0 From jfournier@uu.net Thu Feb 23 10:21:10 1995 Path: ashpoly!cascade!transat!ukc!fennimore!uu!jfournier From: jfournier@uu.net (Jen Fournier) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Feb23.102110.1839@uu.net> Date: Thu, 23 Feb 1995 10:21:10 GMT References: <1995Feb23.083010.5134@kth.se> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Feb23.083010.5134@kth.se>, breyes@kth.se (Brian Reyes) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Jen Fournier Tape trading list upon request. SASE required for international mail. From gsuzuki@unam.mx Fri Feb 24 13:40:10 1995 Path: ashpoly!cascade!mxgate!coyoacan!unam!gsuzuki From: gsuzuki@unam.mx (Göran Suzuki) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Feb24.134010.6687@unam.mx> Date: Fri, 24 Feb 1995 13:40:10 GMT References: <1995Feb23.083010.5134@kth.se> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1995Feb23.083010.5134@kth.se>, breyes@kth.se (Brian Reyes) 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. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Göran Suzuki Opinions expressed are solely my own and not those of Universidad Nacional Autónoma de México (DGSCA). ------------------------------------------------------------ From llopez@utexas.edu Sat Feb 25 03:57:10 1995 Path: ashpoly!cascade!bigsur!utexas!llopez From: llopez@utexas.edu (Lucia López) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Feb25.035710.4208@utexas.edu> Date: Sat, 25 Feb 1995 03:57:10 GMT References: <1995Feb23.083010.5134@kth.se> <1995Feb23.102110.1839@uu.net> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Feb23.102110.1839@uu.net>, jfournier@uu.net (Jen Fournier) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Lucia López "The hatch is open. Is anyone listening?" Sun 3/60 (SunOS 4.1.1) / Linux 1.2.13 From djohansson@cern.ch Sat Feb 25 08:45:10 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!cern!djohansson From: djohansson@cern.ch (Dong-hyun Johansson) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Feb25.084510.3700@cern.ch> Date: Sat, 25 Feb 1995 08:45:10 GMT References: <1995Feb23.083010.5134@kth.se> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Feb23.083010.5134@kth.se>, breyes@kth.se (Brian Reyes) 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. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Dong-hyun Johansson Opinions expressed are solely my own and not those of European Laboratory for Particle Physics, Geneva. ------------------------------------------------------------