From mhughes@clari.net Sun Aug 06 08:38:17 1995 Path: ashpoly!cascade!bigsur!clari!mhughes From: mhughes@clari.net (Mathieu Hughes) Newsgroups: comp.sys.m68k Subject: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug06.083817.1803@clari.net> Date: Sun, 06 Aug 1995 08:38:17 GMT Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: Netscape 1.1N Lines: 10 Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Anyone running this on a Quadra 840AV with the 68040? -- Mathieu Hughes Tape trading list upon request. SASE required for international mail. From bduarte@rwth-aachen.de Mon Aug 07 16:08:17 1995 Path: ashpoly!cascade!mxgate!coyoacan!rwth-aachen!bduarte From: bduarte@rwth-aachen.de (Bruno Duarte) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug07.160817.5908@rwth-aachen.de> Date: Mon, 07 Aug 1995 16:08:17 GMT References: <1995Aug06.083817.1803@clari.net> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Aug06.083817.1803@clari.net>, mhughes@clari.net (Mathieu Hughes) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Bruno Duarte *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0 From slindqvist@clari.net Wed Aug 09 06:42:17 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!clari!slindqvist From: slindqvist@clari.net (Seo-yeon Lindqvist) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug09.064217.1366@clari.net> Date: Wed, 09 Aug 1995 06:42:17 GMT References: <1995Aug06.083817.1803@clari.net> <1995Aug07.160817.5908@rwth-aachen.de> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Aug07.160817.5908@rwth-aachen.de>, bduarte@rwth-aachen.de (Bruno Duarte) 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. -- Seo-yeon Lindqvist Practical Peripherals 14.4 @ 28,800 bps "There are 14 nodes and only 10 countries. Count again."