From stakahashi@demon.co.uk Fri Nov 08 06:04:05 1996 Path: ashpoly!cascade!mxgate!coyoacan!demon!stakahashi From: stakahashi@demon.co.uk (Sven Takahashi) Newsgroups: comp.sys.m68k Subject: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov08.060405.2685@demon.co.uk> Date: Fri, 08 Nov 1996 06:04:05 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 10 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. -- Sven Takahashi -- Demon Internet Services UK "Do not worship the copy." From kpetrov@delphi.com Sat Nov 09 05:39:05 1996 Path: ashpoly!cascade!mxgate!coyoacan!delphi!kpetrov From: kpetrov@delphi.com (Kenji Petrov) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov09.053905.5381@delphi.com> Date: Sat, 09 Nov 1996 05:39:05 GMT References: <1996Nov08.060405.2685@demon.co.uk> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Nov08.060405.2685@demon.co.uk>, stakahashi@demon.co.uk (Sven Takahashi) 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. -- === Kenji Petrov === Dept of Electrical Engineering, Delphi Internet Services "The hatch is open. Is anyone listening?" From kkowalski@stanford.edu Mon Nov 11 02:22:05 1996 Path: ashpoly!cascade!brgate!saturno!stanford!kkowalski From: kkowalski@stanford.edu (Karen Kowalski) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov11.022205.2685@stanford.edu> Date: Mon, 11 Nov 1996 02:22:05 GMT References: <1996Nov08.060405.2685@demon.co.uk> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1996Nov08.060405.2685@demon.co.uk>, stakahashi@demon.co.uk (Sven Takahashi) 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. -- Karen Kowalski *PLONK* filter active for trolls. Macintosh IIfx - NetBSD 1.0 From smartinez@u-tokyo.ac.jp Tue Nov 12 01:10:05 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!u-tokyo!smartinez From: smartinez@u-tokyo.ac.jp (Sun-mi Martínez) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov12.011005.9019@u-tokyo.ac.jp> Date: Tue, 12 Nov 1996 01:10:05 GMT References: <1996Nov08.060405.2685@demon.co.uk> <1996Nov09.053905.5381@delphi.com> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: Netscape 1.1N Lines: 11 In article <1996Nov09.053905.5381@delphi.com>, kpetrov@delphi.com (Kenji 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. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Sun-mi Martínez *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0 From sfischer@purdue.edu Tue Nov 12 02:16:05 1996 Path: ashpoly!cascade!transat!ukc!fennimore!purdue!sfischer From: sfischer@purdue.edu (Sun-mi Fischer) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov12.021605.9468@purdue.edu> Date: Tue, 12 Nov 1996 02:16:05 GMT References: <1996Nov08.060405.2685@demon.co.uk> <1996Nov09.053905.5381@delphi.com> <1996Nov12.011005.9019@u-tokyo.ac.jp> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1996Nov12.011005.9019@u-tokyo.ac.jp>, smartinez@u-tokyo.ac.jp (Sun-mi Martínez) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. > Unsubscribe me from this list! (Wait, this is Usenet, never mind). Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Sun-mi Fischer SupraFAXModem 28.8 @ 28,800 bps "A soul is not exclusive to biology."