From csantos@delphi.com Wed Sep 13 20:23:19 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!delphi!csantos From: csantos@delphi.com (Callum Santos) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep13.202319.4715@delphi.com> Date: Wed, 13 Sep 1995 20:23:19 GMT Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: TIN [version 1.2 PL2] 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. Anyone running this on a Quadra 840AV with the 68040? -- Callum Santos | csantos@delphi.com PGP Key fingerprint: 18D3 8399 DF18 E71C "Keep the channels open." From dsantos@cam.ac.uk Thu Sep 14 20:00:19 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!cam!dsantos From: dsantos@cam.ac.uk (Dave Santos) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep14.200019.5244@cam.ac.uk> Date: Thu, 14 Sep 1995 20:00:19 GMT References: <1995Sep13.202319.4715@delphi.com> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Sep13.202319.4715@delphi.com>, csantos@delphi.com (Callum Santos) 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. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- === Dave Santos === Dept of Electrical Engineering, University of Cambridge Computer Laboratory "5 sigma is a discovery. 7 is a question." From tperez@cern.ch Thu Sep 14 21:56:19 1995 Path: ashpoly!cascade!brgate!saturno!cern!tperez From: tperez@cern.ch (Tobias Pérez) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep14.215619.2373@cern.ch> Date: Thu, 14 Sep 1995 21:56:19 GMT References: <1995Sep13.202319.4715@delphi.com> <1995Sep14.200019.5244@cam.ac.uk> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Sep14.200019.5244@cam.ac.uk>, dsantos@cam.ac.uk (Dave Santos) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. > My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Tobias Pérez "Tape doesn't lie at 02:14. Ears do." Macintosh IIfx / TOS 4.04