From mkarlsson@utexas.edu Fri Sep 08 02:05:17 1995 Path: ashpoly!cascade!brgate!saturno!utexas!mkarlsson From: mkarlsson@utexas.edu (Mikhail Karlsson) Newsgroups: comp.sys.m68k Subject: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep08.020517.6788@utexas.edu> Date: Fri, 08 Sep 1995 02:05:17 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. 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! -- Mikhail Karlsson Zyxel U-1496E @ 19,200 bps "They will send a copy in my place." From neriksson@ox.ac.uk Sun Sep 10 01:16:17 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!ox!neriksson From: neriksson@ox.ac.uk (Natalia Eriksson) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep10.011617.1596@ox.ac.uk> Date: Sun, 10 Sep 1995 01:16:17 GMT References: <1995Sep08.020517.6788@utexas.edu> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Sep08.020517.6788@utexas.edu>, mkarlsson@utexas.edu (Mikhail Karlsson) 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. -- Natalia Eriksson *PLONK* filter active for trolls. Acorn RiscPC 600 - NetBSD 1.0