From dchoi@inria.fr Wed Apr 03 15:58:28 1996 Path: ashpoly!cascade!mxgate!coyoacan!inria!dchoi From: dchoi@inria.fr (Dave Choi) Newsgroups: comp.sys.m68k Subject: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Apr03.155828.3104@inria.fr> Date: Wed, 03 Apr 1996 15:58:28 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr 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. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Anyone running this on a Quadra 840AV with the 68040? -- Dave Choi Zyxel U-1496E @ 28,800 bps "The hatch is open. Is anyone listening?" From ksmirnov@hanse.de Fri Apr 05 17:49:28 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!hanse!ksmirnov From: ksmirnov@hanse.de (Kenji Smirnov) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Apr05.174928.8101@hanse.de> Date: Fri, 05 Apr 1996 17:49:28 GMT References: <1996Apr03.155828.3104@inria.fr> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1996Apr03.155828.3104@inria.fr>, dchoi@inria.fr (Dave Choi) 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. -- Kenji Smirnov -- Hanse-Netzwerk Hamburg "When every node is whole, the channel opens." From yrodriguez@berkeley.edu Sun Apr 07 01:42:28 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!berkeley!yrodriguez From: yrodriguez@berkeley.edu (Yuki Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Apr07.014228.7130@berkeley.edu> Date: Sun, 07 Apr 1996 01:42:28 GMT References: <1996Apr03.155828.3104@inria.fr> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Apr03.155828.3104@inria.fr>, dchoi@inria.fr (Dave Choi) 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. -- Yuki Rodríguez | yrodriguez@berkeley.edu PGP Key fingerprint: 0FF8 EA16 5625 A9FD "Keep the channels open."