From mkarlsson@mindspring.com Fri Aug 18 08:44:08 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!mindspring!mkarlsson From: mkarlsson@mindspring.com (Mike Karlsson) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug18.084408.8414@mindspring.com> Date: Fri, 18 Aug 1995 08:44:08 GMT Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 11 Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? 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! -- Mike Karlsson *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0 From rnilsson@u-tokyo.ac.jp Fri Aug 18 21:21:08 1995 Path: ashpoly!cascade!bigsur!u-tokyo!rnilsson From: rnilsson@u-tokyo.ac.jp (Rodrigo Nilsson) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug18.212108.2097@u-tokyo.ac.jp> Date: Fri, 18 Aug 1995 21:21:08 GMT References: <1995Aug18.084408.8414@mindspring.com> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Aug18.084408.8414@mindspring.com>, mkarlsson@mindspring.com (Mike Karlsson) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Rodrigo Nilsson *PLONK* filter active for trolls. Commodore Amiga 500 (1MB OCS) - NetBSD 1.0 From vperez@netcom.com Sun Aug 20 00:57:08 1995 Path: ashpoly!cascade!mxgate!coyoacan!netcom!vperez From: vperez@netcom.com (Valeria Pérez) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug20.005708.7215@netcom.com> Date: Sun, 20 Aug 1995 00:57:08 GMT References: <1995Aug18.084408.8414@mindspring.com> <1995Aug18.212108.2097@u-tokyo.ac.jp> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Aug18.212108.2097@u-tokyo.ac.jp>, rnilsson@u-tokyo.ac.jp (Rodrigo Nilsson) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Valeria Pérez Opinions expressed are solely my own and not those of NETCOM On-Line Communication Services. ------------------------------------------------------------ From mcampbell@netcom.com Mon Aug 21 18:35:08 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!netcom!mcampbell From: mcampbell@netcom.com (Marisol Campbell) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug21.183508.7766@netcom.com> Date: Mon, 21 Aug 1995 18:35:08 GMT References: <1995Aug18.084408.8414@mindspring.com> <1995Aug18.212108.2097@u-tokyo.ac.jp> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Aug18.212108.2097@u-tokyo.ac.jp>, rnilsson@u-tokyo.ac.jp (Rodrigo Nilsson) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Marisol Campbell US Robotics Courier V.34 @ 28,800 bps "When every node is whole, the channel opens." From enovak@stanford.edu Tue Aug 22 00:05:08 1995 Path: ashpoly!cascade!transat!ukc!fennimore!stanford!enovak From: enovak@stanford.edu (Emi Novak) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug22.000508.8508@stanford.edu> Date: Tue, 22 Aug 1995 00:05:08 GMT References: <1995Aug18.084408.8414@mindspring.com> <1995Aug18.212108.2097@u-tokyo.ac.jp> <1995Aug20.005708.7215@netcom.com> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995Aug20.005708.7215@netcom.com>, vperez@netcom.com (Valeria Pérez) 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. -- Emi Novak -- Stanford University Computer Systems Lab "Marcus is not one man."