From mmartinez@tum.de Sat Dec 09 15:13:13 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!tum!mmartinez From: mmartinez@tum.de (Morag Martínez) Newsgroups: comp.sys.m68k Subject: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec09.151313.4149@tum.de> Date: Sat, 09 Dec 1995 15:13:13 GMT Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Morag Martínez SupraFAXModem 28.8 @ 19,200 bps "5 sigma is a discovery. 7 is a question." From bgarcia@pipeline.com Mon Dec 11 17:56:13 1995 Path: ashpoly!cascade!mxgate!coyoacan!pipeline!bgarcia From: bgarcia@pipeline.com (Bastien García) Newsgroups: comp.sys.m68k Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec11.175613.6882@pipeline.com> Date: Mon, 11 Dec 1995 17:56:13 GMT References: <1995Dec09.151313.4149@tum.de> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Dec09.151313.4149@tum.de>, mmartinez@tum.de (Morag Martínez) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Bastien García Opinions expressed are solely my own and not those of The Pipeline Internet Network. ------------------------------------------------------------ From pkowalski@unam.mx Wed Dec 13 06:59:13 1995 Path: ashpoly!cascade!mxgate!coyoacan!unam!pkowalski From: pkowalski@unam.mx (Pavel Kowalski) Newsgroups: comp.sys.m68k Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec13.065913.2528@unam.mx> Date: Wed, 13 Dec 1995 06:59:13 GMT References: <1995Dec09.151313.4149@tum.de> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Dec09.151313.4149@tum.de>, mmartinez@tum.de (Morag Martínez) 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. -- Pavel Kowalski Opinions expressed are solely my own and not those of Universidad Nacional Autónoma de México (DGSCA). ------------------------------------------------------------ From llopez@delphi.com Wed Dec 13 12:44:13 1995 Path: ashpoly!cascade!mxgate!coyoacan!delphi!llopez From: llopez@delphi.com (Lars López) Newsgroups: comp.sys.m68k Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec13.124413.9430@delphi.com> Date: Wed, 13 Dec 1995 12:44:13 GMT References: <1995Dec09.151313.4149@tum.de> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Dec09.151313.4149@tum.de>, mmartinez@tum.de (Morag Martínez) 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. -- === Lars López === Dept of Electrical Engineering, Delphi Internet Services "Hold for relay."