From ljohansson@pipeline.com Tue May 03 21:29:00 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!pipeline!ljohansson From: ljohansson@pipeline.com (Lars Johansson) Newsgroups: comp.sys.m68k Subject: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994May03.212900.4191@pipeline.com> Date: Tue, 03 May 1994 21:29:00 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: Netscape 1.1N Lines: 10 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? -- Lars Johansson Tape trading list upon request. SASE required for international mail. From tpark@u-tokyo.ac.jp Wed May 04 03:55:00 1994 Path: ashpoly!cascade!bigsur!u-tokyo!tpark From: tpark@u-tokyo.ac.jp (Tomas Park) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994May04.035500.1907@u-tokyo.ac.jp> Date: Wed, 04 May 1994 03:55:00 GMT References: <1994May03.212900.4191@pipeline.com> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1994May03.212900.4191@pipeline.com>, ljohansson@pipeline.com (Lars Johansson) 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. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Tomas Park *PLONK* filter active for trolls. Commodore Amiga 500 (1MB OCS) - NetBSD 1.0 From nkuznetsov@delphi.com Thu May 05 07:32:00 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!delphi!nkuznetsov From: nkuznetsov@delphi.com (Natalia Kuznetsov) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994May05.073200.2509@delphi.com> Date: Thu, 05 May 1994 07:32:00 GMT References: <1994May03.212900.4191@pipeline.com> <1994May04.035500.1907@u-tokyo.ac.jp> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994May04.035500.1907@u-tokyo.ac.jp>, tpark@u-tokyo.ac.jp (Tomas Park) 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. -- Natalia Kuznetsov | nkuznetsov@delphi.com PGP Key fingerprint: B6B0 59A9 8A0A 5333 "Keep the channels open."