From tvasiliev@unam.mx Mon Nov 27 11:54:02 1995 Path: ashpoly!cascade!mxgate!coyoacan!unam!tvasiliev From: tvasiliev@unam.mx (Tobias Vasiliev) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov27.115402.9286@unam.mx> Date: Mon, 27 Nov 1995 11:54:02 GMT Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: Netscape 1.1N Lines: 10 Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). 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. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Tobias Vasiliev Tape trading list upon request. SASE required for international mail. From tschneider@panix.com Tue Nov 28 15:36:02 1995 Path: ashpoly!cascade!mxgate!coyoacan!panix!tschneider From: tschneider@panix.com (Tobias Schneider) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov28.153602.8532@panix.com> Date: Tue, 28 Nov 1995 15:36:02 GMT References: <1995Nov27.115402.9286@unam.mx> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1995Nov27.115402.9286@unam.mx>, tvasiliev@unam.mx (Tobias Vasiliev) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Tobias Schneider *PLONK* filter active for trolls. 486DX4/100 (FreeBSD 2.0.5) - NetBSD 1.0 From mnovak@cern.ch Thu Nov 30 16:25:02 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!cern!mnovak From: mnovak@cern.ch (Marisol Novak) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov30.162502.7427@cern.ch> Date: Thu, 30 Nov 1995 16:25:02 GMT References: <1995Nov27.115402.9286@unam.mx> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Nov27.115402.9286@unam.mx>, tvasiliev@unam.mx (Tobias Vasiliev) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > 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. -- Marisol Novak "The carrier frequency does not drift by accident." Sun 3/60 (SunOS 4.1.1) / SunOS 4.1.4 From mvasiliev@pacbell.net Fri Dec 01 07:07:02 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!pacbell!mvasiliev From: mvasiliev@pacbell.net (Mei Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec01.070702.3134@pacbell.net> Date: Fri, 01 Dec 1995 07:07:02 GMT References: <1995Nov27.115402.9286@unam.mx> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995Nov27.115402.9286@unam.mx>, tvasiliev@unam.mx (Tobias Vasiliev) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. PGP Public key available via finger or upon request. -- Mei Vasiliev Tape trading list upon request. SASE required for international mail. From jhernandez@stanford.edu Fri Dec 01 08:40:02 1995 Path: ashpoly!cascade!mxgate!coyoacan!stanford!jhernandez From: jhernandez@stanford.edu (Jens Hernández) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec01.084002.1030@stanford.edu> Date: Fri, 01 Dec 1995 08:40:02 GMT References: <1995Nov27.115402.9286@unam.mx> <1995Nov30.162502.7427@cern.ch> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Nov30.162502.7427@cern.ch>, mnovak@cern.ch (Marisol Novak) 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. If you are posting from AOL, please read RFC 1036 before posting again. -- === Jens Hernández === Dept of Electrical Engineering, Stanford University Computer Systems Lab "The carrier frequency does not drift by accident."