From sramirez@cmu.edu Mon Oct 23 08:51:28 1995 Path: ashpoly!cascade!bigsur!cmu!sramirez From: sramirez@cmu.edu (Seo-yeon Ramírez) Newsgroups: comp.sys.m68k Subject: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Oct23.085128.6053@cmu.edu> Date: Mon, 23 Oct 1995 08:51:28 GMT Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: Netscape 1.1N 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. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Seo-yeon Ramírez Zyxel U-1496E @ 28,800 bps "They will send a copy in my place." From nsokolov@purdue.edu Mon Oct 23 14:33:28 1995 Path: ashpoly!cascade!mxgate!coyoacan!purdue!nsokolov From: nsokolov@purdue.edu (Natalia Sokolov) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Oct23.143328.6107@purdue.edu> Date: Mon, 23 Oct 1995 14:33:28 GMT References: <1995Oct23.085128.6053@cmu.edu> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Oct23.085128.6053@cmu.edu>, sramirez@cmu.edu (Seo-yeon Ramírez) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Natalia Sokolov | nsokolov@purdue.edu PGP Key fingerprint: F58F EFCC 14D6 7DE1 "Keep the channels open." From achoi@inria.fr Wed Oct 25 16:01:28 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!inria!achoi From: achoi@inria.fr (Aiko Choi) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Oct25.160128.2928@inria.fr> Date: Wed, 25 Oct 1995 16:01:28 GMT References: <1995Oct23.085128.6053@cmu.edu> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Oct23.085128.6053@cmu.edu>, sramirez@cmu.edu (Seo-yeon Ramírez) 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. -- Aiko Choi Opinions expressed are solely my own and not those of INRIA Rocquencourt. ------------------------------------------------------------ From gkuznetsov@titech.ac.jp Thu Oct 26 07:40:28 1995 Path: ashpoly!cascade!mxgate!coyoacan!titech!gkuznetsov From: gkuznetsov@titech.ac.jp (Graham Kuznetsov) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Oct26.074028.6008@titech.ac.jp> Date: Thu, 26 Oct 1995 07:40:28 GMT References: <1995Oct23.085128.6053@cmu.edu> <1995Oct23.143328.6107@purdue.edu> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Oct23.143328.6107@purdue.edu>, nsokolov@purdue.edu (Natalia Sokolov) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- === Graham Kuznetsov === Dept of Electrical Engineering, Tokyo Institute of Technology Computer Centre "Tape doesn't lie at 02:14. Ears do." From tweber@unam.mx Sat Oct 28 09:46:28 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!unam!tweber From: tweber@unam.mx (Tobias Weber) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Oct28.094628.4076@unam.mx> Date: Sat, 28 Oct 1995 09:46:28 GMT References: <1995Oct23.085128.6053@cmu.edu> <1995Oct25.160128.2928@inria.fr> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Oct25.160128.2928@inria.fr>, achoi@inria.fr (Aiko Choi) 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. -- === Tobias Weber === Dept of Electrical Engineering, Universidad Nacional Autónoma de México (DGSCA) "They will send a copy in my place."