From skim@panix.com Fri Dec 15 04:41:05 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!panix!skim From: skim@panix.com (Steve Kim) Newsgroups: comp.sys.m68k Subject: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec15.044105.2482@panix.com> Date: Fri, 15 Dec 1995 04:41:05 GMT Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: Netscape 1.1N Lines: 11 Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Steve Kim *PLONK* filter active for trolls. Sun 3/60 (SunOS 4.1.1) - NetBSD 1.0 From kpark@cmu.edu Sat Dec 16 06:07:05 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!cmu!kpark From: kpark@cmu.edu (Karen Park) Newsgroups: comp.sys.m68k Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec16.060705.8537@cmu.edu> Date: Sat, 16 Dec 1995 06:07:05 GMT References: <1995Dec15.044105.2482@panix.com> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Dec15.044105.2482@panix.com>, skim@panix.com (Steve Kim) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Karen Park Tape trading list upon request. SASE required for international mail. From mjohansson@clari.net Sun Dec 17 08:52:05 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!clari!mjohansson From: mjohansson@clari.net (Mikhail Johansson) Newsgroups: comp.sys.m68k Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec17.085205.6582@clari.net> Date: Sun, 17 Dec 1995 08:52:05 GMT References: <1995Dec15.044105.2482@panix.com> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Dec15.044105.2482@panix.com>, skim@panix.com (Steve Kim) 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. -- Mikhail Johansson -- ClariNet Communications Corp "The hatch is open. Is anyone listening?"