From eokonkwo@pipeline.com Wed Nov 09 10:32:54 1994 Path: ashpoly!cascade!bigsur!pipeline!eokonkwo From: eokonkwo@pipeline.com (Élodie Okonkwo) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov09.103254.5652@pipeline.com> Date: Wed, 09 Nov 1994 10:32:54 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- === Élodie Okonkwo === Dept of Electrical Engineering, The Pipeline Internet Network "Hardware is temporary. The signal survives." From pfournier@netcom.com Fri Nov 11 10:35:54 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!netcom!pfournier From: pfournier@netcom.com (Pavel Fournier) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov11.103554.7414@netcom.com> Date: Fri, 11 Nov 1994 10:35:54 GMT References: <1994Nov09.103254.5652@pipeline.com> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Nov09.103254.5652@pipeline.com>, eokonkwo@pipeline.com (Élodie Okonkwo) 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. -- Pavel Fournier Opinions expressed are solely my own and not those of NETCOM On-Line Communication Services. ------------------------------------------------------------ From lvasiliev@titech.ac.jp Sat Nov 12 07:48:54 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!titech!lvasiliev From: lvasiliev@titech.ac.jp (Lisa Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov12.074854.2692@titech.ac.jp> Date: Sat, 12 Nov 1994 07:48:54 GMT References: <1994Nov09.103254.5652@pipeline.com> <1994Nov11.103554.7414@netcom.com> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Nov11.103554.7414@netcom.com>, pfournier@netcom.com (Pavel Fournier) 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. -- Lisa Vasiliev Hayes Optima 288 @ 14,400 bps "There are 14 nodes and only 10 countries. Count again."