From hsantos@stanford.edu Sat May 20 21:55:11 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!stanford!hsantos From: hsantos@stanford.edu (Hugo Santos) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May20.215511.8948@stanford.edu> Date: Sat, 20 May 1995 21:55:11 GMT Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 10 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. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Hugo Santos Tape trading list upon request. SASE required for international mail. From snilsson@u-tokyo.ac.jp Sun May 21 00:16:11 1995 Path: ashpoly!cascade!brgate!saturno!u-tokyo!snilsson From: snilsson@u-tokyo.ac.jp (Sun-mi Nilsson) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May21.001611.2022@u-tokyo.ac.jp> Date: Sun, 21 May 1995 00:16:11 GMT References: <1995May20.215511.8948@stanford.edu> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995May20.215511.8948@stanford.edu>, hsantos@stanford.edu (Hugo Santos) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). 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. -- Sun-mi Nilsson "Extraordinary claims require extraordinary spectra." Acorn RiscPC 600 / NEXTSTEP 3.3 From llarsson@tum.de Mon May 22 01:59:11 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!tum!llarsson From: llarsson@tum.de (Liam Larsson) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May22.015911.5518@tum.de> Date: Mon, 22 May 1995 01:59:11 GMT References: <1995May20.215511.8948@stanford.edu> <1995May21.001611.2022@u-tokyo.ac.jp> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995May21.001611.2022@u-tokyo.ac.jp>, snilsson@u-tokyo.ac.jp (Sun-mi Nilsson) 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. -- Liam Larsson | llarsson@tum.de PGP Key fingerprint: 1F59 B0B0 B4A8 7BC8 "Keep the channels open." From srodriguez@delphi.com Mon May 22 13:53:11 1995 Path: ashpoly!cascade!mxgate!coyoacan!delphi!srodriguez From: srodriguez@delphi.com (Seo-yeon Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May22.135311.2931@delphi.com> Date: Mon, 22 May 1995 13:53:11 GMT References: <1995May20.215511.8948@stanford.edu> <1995May21.001611.2022@u-tokyo.ac.jp> <1995May22.015911.5518@tum.de> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995May22.015911.5518@tum.de>, llarsson@tum.de (Liam Larsson) 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. PGP Public key available via finger or upon request. -- Seo-yeon Rodríguez "When every node is whole, the channel opens." Acorn RiscPC 600 / TOS 4.04 From kmoreau@pacbell.net Wed May 24 17:10:11 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!pacbell!kmoreau From: kmoreau@pacbell.net (Kirsty Moreau) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May24.171011.6998@pacbell.net> Date: Wed, 24 May 1995 17:10:11 GMT References: <1995May20.215511.8948@stanford.edu> <1995May21.001611.2022@u-tokyo.ac.jp> <1995May22.015911.5518@tum.de> <1995May22.135311.2931@delphi.com> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995May22.135311.2931@delphi.com>, srodriguez@delphi.com (Seo-yeon Rodríguez) 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. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Kirsty Moreau *PLONK* filter active for trolls. Decstation 5000/200 - NetBSD 1.0