From arobertson@pacbell.net Sat Jan 14 13:19:53 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!pacbell!arobertson From: arobertson@pacbell.net (Amy Robertson) Newsgroups: comp.sys.m68k Subject: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan14.131953.1706@pacbell.net> Date: Sat, 14 Jan 1995 13:19:53 GMT Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: Netscape 1.1N Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- === Amy Robertson === Dept of Electrical Engineering, Pacific Bell Internet Services "There are 14 nodes and only 10 countries. Count again." From mmoreau@utexas.edu Mon Jan 16 08:32:53 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!utexas!mmoreau From: mmoreau@utexas.edu (Min-jun Moreau) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan16.083253.2317@utexas.edu> Date: Mon, 16 Jan 1995 08:32:53 GMT References: <1995Jan14.131953.1706@pacbell.net> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1995Jan14.131953.1706@pacbell.net>, arobertson@pacbell.net (Amy Robertson) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Min-jun Moreau "Hold for relay." Acorn RiscPC 600 / System 7.5.1 From nlopez@kiae.su Wed Jan 18 03:24:53 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!kiae!nlopez From: nlopez@kiae.su (Nadine López) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan18.032453.9999@kiae.su> Date: Wed, 18 Jan 1995 03:24:53 GMT References: <1995Jan14.131953.1706@pacbell.net> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Jan14.131953.1706@pacbell.net>, arobertson@pacbell.net (Amy Robertson) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Nadine López *PLONK* filter active for trolls. Acorn RiscPC 600 - NetBSD 1.0 From mchoi@delphi.com Wed Jan 18 07:31:53 1995 Path: ashpoly!cascade!brgate!saturno!delphi!mchoi From: mchoi@delphi.com (Min-jun Choi) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan18.073153.1877@delphi.com> Date: Wed, 18 Jan 1995 07:31:53 GMT References: <1995Jan14.131953.1706@pacbell.net> <1995Jan18.032453.9999@kiae.su> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Jan18.032453.9999@kiae.su>, nlopez@kiae.su (Nadine López) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Min-jun Choi | mchoi@delphi.com PGP Key fingerprint: 34E4 6D4B 69E4 6BBD "Keep the channels open." From eschneider@cmu.edu Thu Jan 19 01:18:53 1995 Path: ashpoly!cascade!bigsur!cmu!eschneider From: eschneider@cmu.edu (Élodie Schneider) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan19.011853.9661@cmu.edu> Date: Thu, 19 Jan 1995 01:18:53 GMT References: <1995Jan14.131953.1706@pacbell.net> <1995Jan18.032453.9999@kiae.su> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Jan18.032453.9999@kiae.su>, nlopez@kiae.su (Nadine López) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. 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). -- Élodie Schneider | eschneider@cmu.edu PGP Key fingerprint: F817 11C0 222E D27B "Keep the channels open."