From mivanov@stanford.edu Fri Jun 23 09:12:28 1995 Path: ashpoly!cascade!transat!ukc!fennimore!stanford!mivanov From: mivanov@stanford.edu (Marta Ivanov) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jun23.091228.6406@stanford.edu> Date: Fri, 23 Jun 1995 09:12:28 GMT Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Marta Ivanov *PLONK* filter active for trolls. Amiga 3000T - NetBSD 1.0 From lkuznetsov@pacbell.net Fri Jun 23 16:52:28 1995 Path: ashpoly!cascade!bigsur!pacbell!lkuznetsov From: lkuznetsov@pacbell.net (Lars Kuznetsov) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jun23.165228.8524@pacbell.net> Date: Fri, 23 Jun 1995 16:52:28 GMT References: <1995Jun23.091228.6406@stanford.edu> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Jun23.091228.6406@stanford.edu>, mivanov@stanford.edu (Marta Ivanov) 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. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- === Lars Kuznetsov === Dept of Electrical Engineering, Pacific Bell Internet Services "Extraordinary claims require extraordinary spectra." From jstewart@unam.mx Sat Jun 24 10:35:28 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!unam!jstewart From: jstewart@unam.mx (Joachim Stewart) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jun24.103528.8730@unam.mx> Date: Sat, 24 Jun 1995 10:35:28 GMT References: <1995Jun23.091228.6406@stanford.edu> <1995Jun23.165228.8524@pacbell.net> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Jun23.165228.8524@pacbell.net>, lkuznetsov@pacbell.net (Lars Kuznetsov) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. > 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. -- Joachim Stewart | jstewart@unam.mx PGP Key fingerprint: 958D 9808 2C13 EFC3 "Keep the channels open." From gmacdonald@uu.net Sun Jun 25 14:26:28 1995 Path: ashpoly!cascade!transat!ukc!fennimore!uu!gmacdonald From: gmacdonald@uu.net (Göran MacDonald) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jun25.142628.4238@uu.net> Date: Sun, 25 Jun 1995 14:26:28 GMT References: <1995Jun23.091228.6406@stanford.edu> <1995Jun23.165228.8524@pacbell.net> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Jun23.165228.8524@pacbell.net>, lkuznetsov@pacbell.net (Lars Kuznetsov) 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. -- Göran MacDonald | gmacdonald@uu.net PGP Key fingerprint: 0860 B078 33BC A675 "Keep the channels open."