From pwatanabe@titech.ac.jp Wed Jun 07 13:39:05 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!titech!pwatanabe From: pwatanabe@titech.ac.jp (Pavel Watanabe) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jun07.133905.5182@titech.ac.jp> Date: Wed, 07 Jun 1995 13:39:05 GMT Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 10 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Anyone running this on a Quadra 840AV with the 68040? -- Pavel Watanabe Tape trading list upon request. SASE required for international mail. From lsokolov@tum.de Wed Jun 07 22:20:05 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!tum!lsokolov From: lsokolov@tum.de (Lisa Sokolov) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jun07.222005.3587@tum.de> Date: Wed, 07 Jun 1995 22:20:05 GMT References: <1995Jun07.133905.5182@titech.ac.jp> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jun07.133905.5182@titech.ac.jp>, pwatanabe@titech.ac.jp (Pavel Watanabe) 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. -- Lisa Sokolov "Extraordinary claims require extraordinary spectra." Sun SparcStation 20 / SunOS 4.1.4