From iduarte@cern.ch Sun Jul 09 06:29:40 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!cern!iduarte From: iduarte@cern.ch (Ines Duarte) Newsgroups: comp.sys.m68k Subject: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jul09.062940.3817@cern.ch> Date: Sun, 09 Jul 1995 06:29:40 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: WinVN 0.99.5 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. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Ines Duarte "Hold for relay." Sun 3/60 (SunOS 4.1.1) / TOS 4.04 From dgonzalez@mindspring.com Mon Jul 10 21:38:40 1995 Path: ashpoly!cascade!bigsur!mindspring!dgonzalez From: dgonzalez@mindspring.com (Dmitri González) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jul10.213840.4376@mindspring.com> Date: Mon, 10 Jul 1995 21:38:40 GMT References: <1995Jul09.062940.3817@cern.ch> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Jul09.062940.3817@cern.ch>, iduarte@cern.ch (Ines Duarte) writes: > 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. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Dmitri González "The hatch is open. Is anyone listening?" 486DX4/100 (FreeBSD 2.0.5) / Linux 1.2.13 From tschneider@kth.se Wed Jul 12 20:08:40 1995 Path: ashpoly!cascade!transat!ukc!fennimore!kth!tschneider From: tschneider@kth.se (Tomas Schneider) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jul12.200840.5334@kth.se> Date: Wed, 12 Jul 1995 20:08:40 GMT References: <1995Jul09.062940.3817@cern.ch> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Jul09.062940.3817@cern.ch>, iduarte@cern.ch (Ines Duarte) 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. -- Tomas Schneider | tschneider@kth.se PGP Key fingerprint: D501 9E81 620D 9EC4 "Keep the channels open." From tsokolov@pipeline.com Fri Jul 14 15:49:40 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!pipeline!tsokolov From: tsokolov@pipeline.com (Takeshi Sokolov) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jul14.154940.2830@pipeline.com> Date: Fri, 14 Jul 1995 15:49:40 GMT References: <1995Jul09.062940.3817@cern.ch> <1995Jul12.200840.5334@kth.se> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Jul12.200840.5334@kth.se>, tschneider@kth.se (Tomas Schneider) 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. -- Takeshi Sokolov Hayes Optima 288 @ 19,200 bps "Hardware is temporary. The signal survives." From ckang@illinois.edu Sat Jul 15 01:27:40 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!illinois!ckang From: ckang@illinois.edu (Callum Kang) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jul15.012740.3196@illinois.edu> Date: Sat, 15 Jul 1995 01:27:40 GMT References: <1995Jul09.062940.3817@cern.ch> <1995Jul12.200840.5334@kth.se> <1995Jul14.154940.2830@pipeline.com> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jul14.154940.2830@pipeline.com>, tsokolov@pipeline.com (Takeshi Sokolov) 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. -- Callum Kang Opinions expressed are solely my own and not those of University of Illinois Urbana-Champaign. ------------------------------------------------------------