From rsouza@tum.de Fri Aug 05 21:13:20 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!tum!rsouza From: rsouza@tum.de (Renata Souza) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Aug05.211320.5064@tum.de> Date: Fri, 05 Aug 1994 21:13:20 GMT Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Anyone running this on a Quadra 840AV with the 68040? -- Renata Souza "Row 14. No joke." Amiga 3000T / TOS 4.04 From nreyes@rwth-aachen.de Sat Aug 06 10:15:20 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!rwth-aachen!nreyes From: nreyes@rwth-aachen.de (Natalia Reyes) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Aug06.101520.4943@rwth-aachen.de> Date: Sat, 06 Aug 1994 10:15:20 GMT References: <1994Aug05.211320.5064@tum.de> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N Lines: 10 In article <1994Aug05.211320.5064@tum.de>, rsouza@tum.de (Renata Souza) 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. Top-posters will be placed in my ~/.killfile without notice. -- Natalia Reyes Tape trading list upon request. SASE required for international mail. From lkim@delphi.com Mon Aug 08 06:59:20 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!delphi!lkim From: lkim@delphi.com (Lucia Kim) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Aug08.065920.6994@delphi.com> Date: Mon, 08 Aug 1994 06:59:20 GMT References: <1994Aug05.211320.5064@tum.de> <1994Aug06.101520.4943@rwth-aachen.de> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Aug06.101520.4943@rwth-aachen.de>, nreyes@rwth-aachen.de (Natalia Reyes) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Lucia Kim "5 sigma is a discovery. 7 is a question." 486DX4/100 (FreeBSD 2.0.5) / NEXTSTEP 3.3 From tpark@titech.ac.jp Tue Aug 09 15:23:20 1994 Path: ashpoly!cascade!transat!ukc!fennimore!titech!tpark From: tpark@titech.ac.jp (Tobias Park) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Aug09.152320.3345@titech.ac.jp> Date: Tue, 09 Aug 1994 15:23:20 GMT References: <1994Aug05.211320.5064@tum.de> <1994Aug06.101520.4943@rwth-aachen.de> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1994Aug06.101520.4943@rwth-aachen.de>, nreyes@rwth-aachen.de (Natalia Reyes) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. > Top-posters will be placed in my ~/.killfile without notice. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Tobias Park "Tape doesn't lie at 02:14. Ears do." Mac IIci / 68882 FPU / SunOS 4.1.4