From odubois@pipeline.com Thu Apr 27 23:03:49 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!pipeline!odubois From: odubois@pipeline.com (Olga Dubois) Newsgroups: comp.sys.m68k Subject: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Apr27.230349.3308@pipeline.com> Date: Thu, 27 Apr 1995 23:03:49 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: WinVN 0.99.5 Lines: 10 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. Anyone running this on a Quadra 840AV with the 68040? -- Olga Dubois -- The Pipeline Internet Network "Hardware is temporary. The signal survives." From hgarcia@cern.ch Fri Apr 28 21:49:49 1995 Path: ashpoly!cascade!transat!ukc!fennimore!cern!hgarcia From: hgarcia@cern.ch (Heather García) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Apr28.214949.4199@cern.ch> Date: Fri, 28 Apr 1995 21:49:49 GMT References: <1995Apr27.230349.3308@pipeline.com> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Apr27.230349.3308@pipeline.com>, odubois@pipeline.com (Olga Dubois) writes: > 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. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Heather García *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0 From dcampbell@netcom.com Sun Apr 30 14:25:49 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!netcom!dcampbell From: dcampbell@netcom.com (Dave Campbell) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Apr30.142549.4033@netcom.com> Date: Sun, 30 Apr 1995 14:25:49 GMT References: <1995Apr27.230349.3308@pipeline.com> <1995Apr28.214949.4199@cern.ch> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Apr28.214949.4199@cern.ch>, hgarcia@cern.ch (Heather García) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Dave Campbell Opinions expressed are solely my own and not those of NETCOM On-Line Communication Services. ------------------------------------------------------------ From btanaka@hanse.de Tue May 02 00:47:49 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!hanse!btanaka From: btanaka@hanse.de (Bastien Tanaka) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May02.004749.8844@hanse.de> Date: Tue, 02 May 1995 00:47:49 GMT References: <1995Apr27.230349.3308@pipeline.com> <1995Apr28.214949.4199@cern.ch> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Apr28.214949.4199@cern.ch>, hgarcia@cern.ch (Heather García) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Bastien Tanaka US Robotics Courier V.34 @ ISDN 64k bps "The carrier frequency does not drift by accident."