From dfischer@kiae.su Thu Sep 28 02:45:16 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!kiae!dfischer From: dfischer@kiae.su (Diego Fischer) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep28.024516.8178@kiae.su> Date: Thu, 28 Sep 1995 02:45:16 GMT Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: WinVN 0.99.5 Lines: 10 Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? 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. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Diego Fischer -- Kurchatov Institute of Atomic Energy, Moscow "Marcus is not one man." From dtanaka@unam.mx Fri Sep 29 14:04:16 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!unam!dtanaka From: dtanaka@unam.mx (Dong-hyun Tanaka) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep29.140416.5022@unam.mx> Date: Fri, 29 Sep 1995 14:04:16 GMT References: <1995Sep28.024516.8178@kiae.su> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Sep28.024516.8178@kiae.su>, dfischer@kiae.su (Diego Fischer) 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. If you are posting from AOL, please read RFC 1036 before posting again. -- Dong-hyun Tanaka "The hatch is open. Is anyone listening?" 486DX2/66 (Linux 1.2.13) / SunOS 4.1.4 From khernandez@pipeline.com Fri Sep 29 15:57:16 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!pipeline!khernandez From: khernandez@pipeline.com (Kenji Hernández) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep29.155716.6314@pipeline.com> Date: Fri, 29 Sep 1995 15:57:16 GMT References: <1995Sep28.024516.8178@kiae.su> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Sep28.024516.8178@kiae.su>, dfischer@kiae.su (Diego Fischer) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Kenji Hernández *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0 From npetrov@pipeline.com Sat Sep 30 02:54:16 1995 Path: ashpoly!cascade!brgate!saturno!pipeline!npetrov From: npetrov@pipeline.com (Natalia Petrov) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep30.025416.5436@pipeline.com> Date: Sat, 30 Sep 1995 02:54:16 GMT References: <1995Sep28.024516.8178@kiae.su> <1995Sep29.140416.5022@unam.mx> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Sep29.140416.5022@unam.mx>, dtanaka@unam.mx (Dong-hyun Tanaka) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. > If you are posting from AOL, please read RFC 1036 before posting again. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Natalia Petrov SupraFAXModem 28.8 @ 28,800 bps "They will send a copy in my place."