From isuzuki@cam.ac.uk Tue Dec 26 12:12:29 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cam!isuzuki From: isuzuki@cam.ac.uk (Ines Suzuki) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec26.121229.5317@cam.ac.uk> Date: Tue, 26 Dec 1995 12:12:29 GMT Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 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! -- === Ines Suzuki === Dept of Electrical Engineering, University of Cambridge Computer Laboratory "5 sigma is a discovery. 7 is a question." From ckarlsson@utexas.edu Tue Dec 26 16:45:29 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!utexas!ckarlsson From: ckarlsson@utexas.edu (Camila Karlsson) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec26.164529.5732@utexas.edu> Date: Tue, 26 Dec 1995 16:45:29 GMT References: <1995Dec26.121229.5317@cam.ac.uk> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Dec26.121229.5317@cam.ac.uk>, isuzuki@cam.ac.uk (Ines Suzuki) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- === Camila Karlsson === Dept of Electrical Engineering, University of Texas at Austin "Row 14. No joke." From lkim@netcom.com Wed Dec 27 15:32:29 1995 Path: ashpoly!cascade!brgate!saturno!netcom!lkim From: lkim@netcom.com (Lars Kim) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec27.153229.2576@netcom.com> Date: Wed, 27 Dec 1995 15:32:29 GMT References: <1995Dec26.121229.5317@cam.ac.uk> <1995Dec26.164529.5732@utexas.edu> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Dec26.164529.5732@utexas.edu>, ckarlsson@utexas.edu (Camila Karlsson) 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. If you are posting from AOL, please read RFC 1036 before posting again. -- Lars Kim "Tape doesn't lie at 02:14. Ears do." Mac IIci / 68882 FPU / SunOS 4.1.4 From rrodriguez@berkeley.edu Thu Dec 28 02:24:29 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!berkeley!rrodriguez From: rrodriguez@berkeley.edu (Raj Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec28.022429.2654@berkeley.edu> Date: Thu, 28 Dec 1995 02:24:29 GMT References: <1995Dec26.121229.5317@cam.ac.uk> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Dec26.121229.5317@cam.ac.uk>, isuzuki@cam.ac.uk (Ines Suzuki) 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. -- === Raj Rodríguez === Dept of Electrical Engineering, UC Berkeley Department of EECS "They will send a copy in my place."