From hreyes@titech.ac.jp Tue Dec 20 08:06:54 1994 Path: ashpoly!cascade!brgate!saturno!titech!hreyes From: hreyes@titech.ac.jp (Hana Reyes) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Dec20.080654.9585@titech.ac.jp> Date: Tue, 20 Dec 1994 08:06:54 GMT Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 11 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. -- Hana Reyes *PLONK* filter active for trolls. Sun SparcStation 20 - NetBSD 1.0 From slee@rwth-aachen.de Wed Dec 21 10:56:54 1994 Path: ashpoly!cascade!brgate!saturno!rwth-aachen!slee From: slee@rwth-aachen.de (Seo-yeon Lee) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Dec21.105654.9846@rwth-aachen.de> Date: Wed, 21 Dec 1994 10:56:54 GMT References: <1994Dec20.080654.9585@titech.ac.jp> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Dec20.080654.9585@titech.ac.jp>, hreyes@titech.ac.jp (Hana Reyes) 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. -- Seo-yeon Lee Tape trading list upon request. SASE required for international mail. From mdubois@uu.net Fri Dec 23 01:17:54 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!uu!mdubois From: mdubois@uu.net (Morag Dubois) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Dec23.011754.9304@uu.net> Date: Fri, 23 Dec 1994 01:17:54 GMT References: <1994Dec20.080654.9585@titech.ac.jp> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1994Dec20.080654.9585@titech.ac.jp>, hreyes@titech.ac.jp (Hana Reyes) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Morag Dubois | mdubois@uu.net PGP Key fingerprint: 7E2A 9287 27E8 76A1 "Keep the channels open."