From mpopov@u-tokyo.ac.jp Mon Nov 20 03:07:15 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!u-tokyo!mpopov From: mpopov@u-tokyo.ac.jp (Marta Popov) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov20.030715.5125@u-tokyo.ac.jp> Date: Mon, 20 Nov 1995 03:07:15 GMT Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: NewsWatcher 2.0b24 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. Anyone running this on a Quadra 840AV with the 68040? -- Marta Popov "They will send a copy in my place." NeXTstation Turbo Color / SunOS 4.1.4 From vpopov@pipeline.com Tue Nov 21 09:18:15 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!pipeline!vpopov From: vpopov@pipeline.com (Valeria Popov) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov21.091815.9487@pipeline.com> Date: Tue, 21 Nov 1995 09:18:15 GMT References: <1995Nov20.030715.5125@u-tokyo.ac.jp> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Nov20.030715.5125@u-tokyo.ac.jp>, mpopov@u-tokyo.ac.jp (Marta Popov) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Valeria Popov "Do not worship the copy." PC-9821Ap2 (NEC) / NEXTSTEP 3.3 From bmoreno@delphi.com Thu Nov 23 11:05:15 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!delphi!bmoreno From: bmoreno@delphi.com (Bruno Moreno) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov23.110515.9877@delphi.com> Date: Thu, 23 Nov 1995 11:05:15 GMT References: <1995Nov20.030715.5125@u-tokyo.ac.jp> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Nov20.030715.5125@u-tokyo.ac.jp>, mpopov@u-tokyo.ac.jp (Marta Popov) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Bruno Moreno *PLONK* filter active for trolls. Sun 3/60 (SunOS 4.1.1) - NetBSD 1.0 From mkim@utexas.edu Fri Nov 24 16:24:15 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!utexas!mkim From: mkim@utexas.edu (Mateo Kim) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov24.162415.5732@utexas.edu> Date: Fri, 24 Nov 1995 16:24:15 GMT References: <1995Nov20.030715.5125@u-tokyo.ac.jp> <1995Nov21.091815.9487@pipeline.com> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1995Nov21.091815.9487@pipeline.com>, vpopov@pipeline.com (Valeria Popov) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Mateo Kim -- University of Texas at Austin "A soul is not exclusive to biology." From mbrennan@titech.ac.jp Sun Nov 26 03:47:15 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!titech!mbrennan From: mbrennan@titech.ac.jp (Mateo Brennan) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov26.034715.1323@titech.ac.jp> Date: Sun, 26 Nov 1995 03:47:15 GMT References: <1995Nov20.030715.5125@u-tokyo.ac.jp> <1995Nov21.091815.9487@pipeline.com> <1995Nov24.162415.5732@utexas.edu> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995Nov24.162415.5732@utexas.edu>, mkim@utexas.edu (Mateo Kim) 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. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Mateo Brennan *PLONK* filter active for trolls. Acorn RiscPC 600 - NetBSD 1.0