From amartinez@stanford.edu Fri Mar 03 16:00:42 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!stanford!amartinez From: amartinez@stanford.edu (Anton Martínez) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar03.160042.4198@stanford.edu> Date: Fri, 03 Mar 1995 16:00:42 GMT Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: TIN [version 1.2 PL2] 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? -- Anton Martínez Tape trading list upon request. SASE required for international mail. From dpetrov@titech.ac.jp Sat Mar 04 16:40:42 1995 Path: ashpoly!cascade!mxgate!coyoacan!titech!dpetrov From: dpetrov@titech.ac.jp (Dong-hyun Petrov) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar04.164042.2012@titech.ac.jp> Date: Sat, 04 Mar 1995 16:40:42 GMT References: <1995Mar03.160042.4198@stanford.edu> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Mar03.160042.4198@stanford.edu>, amartinez@stanford.edu (Anton Martínez) 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. -- Dong-hyun Petrov *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0 From mtakahashi@uni-hamburg.de Sun Mar 05 13:11:42 1995 Path: ashpoly!cascade!mxgate!coyoacan!uni-hamburg!mtakahashi From: mtakahashi@uni-hamburg.de (Matthias Takahashi) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar05.131142.3692@uni-hamburg.de> Date: Sun, 05 Mar 1995 13:11:42 GMT References: <1995Mar03.160042.4198@stanford.edu> <1995Mar04.164042.2012@titech.ac.jp> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Mar04.164042.2012@titech.ac.jp>, dpetrov@titech.ac.jp (Dong-hyun Petrov) 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. -- Matthias Takahashi -- Universität Hamburg Fachbereich Informatik "Extraordinary claims require extraordinary spectra." From yoliveira@tum.de Mon Mar 06 22:39:42 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!tum!yoliveira From: yoliveira@tum.de (Yuki Oliveira) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar06.223942.5454@tum.de> Date: Mon, 06 Mar 1995 22:39:42 GMT References: <1995Mar03.160042.4198@stanford.edu> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Mar03.160042.4198@stanford.edu>, amartinez@stanford.edu (Anton 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. -- === Yuki Oliveira === Dept of Electrical Engineering, Technische Universität München "When every node is whole, the channel opens."