From kmacdonald@cern.ch Fri Aug 04 10:19:52 1995 Path: ashpoly!cascade!transat!ukc!fennimore!cern!kmacdonald From: kmacdonald@cern.ch (Kirsty MacDonald) Newsgroups: comp.sys.m68k Subject: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug04.101952.3073@cern.ch> Date: Fri, 04 Aug 1995 10:19:52 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 11 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. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Anyone running this on a Quadra 840AV with the 68040? -- Kirsty MacDonald | kmacdonald@cern.ch PGP Key fingerprint: E010 D653 AF59 62F6 "Keep the channels open." From ssouza@delphi.com Fri Aug 04 15:25:52 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!delphi!ssouza From: ssouza@delphi.com (Sven Souza) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug04.152552.2196@delphi.com> Date: Fri, 04 Aug 1995 15:25:52 GMT References: <1995Aug04.101952.3073@cern.ch> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Aug04.101952.3073@cern.ch>, kmacdonald@cern.ch (Kirsty MacDonald) writes: > 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. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Sven Souza | ssouza@delphi.com PGP Key fingerprint: 828B BA11 2A71 CDBC "Keep the channels open." From lweber@cmu.edu Sun Aug 06 07:51:52 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!cmu!lweber From: lweber@cmu.edu (Lisa Weber) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug06.075152.2112@cmu.edu> Date: Sun, 06 Aug 1995 07:51:52 GMT References: <1995Aug04.101952.3073@cern.ch> <1995Aug04.152552.2196@delphi.com> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Aug04.152552.2196@delphi.com>, ssouza@delphi.com (Sven Souza) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Lisa Weber *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0 From emoreau@stanford.edu Mon Aug 07 16:12:52 1995 Path: ashpoly!cascade!mxgate!coyoacan!stanford!emoreau From: emoreau@stanford.edu (Elaine Moreau) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug07.161252.7575@stanford.edu> Date: Mon, 07 Aug 1995 16:12:52 GMT References: <1995Aug04.101952.3073@cern.ch> <1995Aug04.152552.2196@delphi.com> <1995Aug06.075152.2112@cmu.edu> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Aug06.075152.2112@cmu.edu>, lweber@cmu.edu (Lisa Weber) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. > Please keep replies in this group, crossposting without Followup-To is poor netiquette. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Elaine Moreau -- Stanford University Computer Systems Lab "The hatch is open. Is anyone listening?"