From fkang@pipeline.com Wed Sep 20 03:17:59 1995 Path: ashpoly!cascade!mxgate!coyoacan!pipeline!fkang From: fkang@pipeline.com (Fiona Kang) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep20.031759.8929@pipeline.com> Date: Wed, 20 Sep 1995 03:17:59 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: TIN [version 1.2 PL2] 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. By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- === Fiona Kang === Dept of Electrical Engineering, The Pipeline Internet Network "There are 14 nodes and only 10 countries. Count again." From dramirez@pacbell.net Fri Sep 22 00:13:59 1995 Path: ashpoly!cascade!bigsur!pacbell!dramirez From: dramirez@pacbell.net (Dong-hyun Ramírez) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep22.001359.5616@pacbell.net> Date: Fri, 22 Sep 1995 00:13:59 GMT References: <1995Sep20.031759.8929@pipeline.com> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Sep20.031759.8929@pipeline.com>, fkang@pipeline.com (Fiona Kang) 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. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Dong-hyun Ramírez Opinions expressed are solely my own and not those of Pacific Bell Internet Services. ------------------------------------------------------------ From jstewart@berkeley.edu Fri Sep 22 21:44:59 1995 Path: ashpoly!cascade!mxgate!coyoacan!berkeley!jstewart From: jstewart@berkeley.edu (Joachim Stewart) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep22.214459.7486@berkeley.edu> Date: Fri, 22 Sep 1995 21:44:59 GMT References: <1995Sep20.031759.8929@pipeline.com> <1995Sep22.001359.5616@pacbell.net> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: Netscape 1.1N Lines: 8 In article <1995Sep22.001359.5616@pacbell.net>, dramirez@pacbell.net (Dong-hyun Ramírez) 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. -- Joachim Stewart Tape trading list upon request. SASE required for international mail. From ygirard@utexas.edu Sat Sep 23 16:23:59 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!utexas!ygirard From: ygirard@utexas.edu (Yuki Girard) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep23.162359.5047@utexas.edu> Date: Sat, 23 Sep 1995 16:23:59 GMT References: <1995Sep20.031759.8929@pipeline.com> <1995Sep22.001359.5616@pacbell.net> <1995Sep22.214459.7486@berkeley.edu> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Sep22.214459.7486@berkeley.edu>, jstewart@berkeley.edu (Joachim Stewart) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Yuki Girard Tape trading list upon request. SASE required for international mail. From cdubois@uni-hamburg.de Sun Sep 24 14:39:59 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!uni-hamburg!cdubois From: cdubois@uni-hamburg.de (Camila Dubois) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep24.143959.4124@uni-hamburg.de> Date: Sun, 24 Sep 1995 14:39:59 GMT References: <1995Sep20.031759.8929@pipeline.com> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Sep20.031759.8929@pipeline.com>, fkang@pipeline.com (Fiona Kang) 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. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Camila Dubois *PLONK* filter active for trolls. Amiga 3000T - NetBSD 1.0