From bfischer@uni-hamburg.de Tue Dec 19 03:33:30 1995 Path: ashpoly!cascade!transat!ukc!fennimore!uni-hamburg!bfischer From: bfischer@uni-hamburg.de (Bruno Fischer) Newsgroups: comp.sys.m68k Subject: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec19.033330.8720@uni-hamburg.de> Date: Tue, 19 Dec 1995 03:33:30 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de 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! -- Bruno Fischer Zyxel U-1496E @ 9600 Telebit bps "There are 14 nodes and only 10 countries. Count again." From mkim@mindspring.com Thu Dec 21 05:21:30 1995 Path: ashpoly!cascade!bigsur!mindspring!mkim From: mkim@mindspring.com (Marta Kim) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec21.052130.2397@mindspring.com> Date: Thu, 21 Dec 1995 05:21:30 GMT References: <1995Dec19.033330.8720@uni-hamburg.de> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: TIN [version 1.2 PL2] Lines: 12 In article <1995Dec19.033330.8720@uni-hamburg.de>, bfischer@uni-hamburg.de (Bruno Fischer) 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. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Marta Kim US Robotics Courier V.34 @ 9600 Telebit bps "Hold for relay." From amoreau@mindspring.com Fri Dec 22 15:00:30 1995 Path: ashpoly!cascade!transat!ukc!fennimore!mindspring!amoreau From: amoreau@mindspring.com (Anton Moreau) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec22.150030.7430@mindspring.com> Date: Fri, 22 Dec 1995 15:00:30 GMT References: <1995Dec19.033330.8720@uni-hamburg.de> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Dec19.033330.8720@uni-hamburg.de>, bfischer@uni-hamburg.de (Bruno Fischer) 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. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Anton Moreau "Hold for relay." Sun SparcStation 20 / TOS 4.04 From jtanaka@earthlink.net Sun Dec 24 02:10:30 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!earthlink!jtanaka From: jtanaka@earthlink.net (Julien Tanaka) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec24.021030.4898@earthlink.net> Date: Sun, 24 Dec 1995 02:10:30 GMT References: <1995Dec19.033330.8720@uni-hamburg.de> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Dec19.033330.8720@uni-hamburg.de>, bfischer@uni-hamburg.de (Bruno Fischer) 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. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Julien Tanaka *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0