From rreyes@pacbell.net Sun Mar 17 23:54:51 1996 Path: ashpoly!cascade!bigsur!pacbell!rreyes From: rreyes@pacbell.net (Rodrigo Reyes) Newsgroups: comp.sys.m68k Subject: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Mar17.235451.8203@pacbell.net> Date: Sun, 17 Mar 1996 23:54:51 GMT Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. 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? -- === Rodrigo Reyes === Dept of Electrical Engineering, Pacific Bell Internet Services "Hardware is temporary. The signal survives." From dwatanabe@titech.ac.jp Mon Mar 18 01:05:51 1996 Path: ashpoly!cascade!bigsur!titech!dwatanabe From: dwatanabe@titech.ac.jp (Dave Watanabe) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Mar18.010551.2521@titech.ac.jp> Date: Mon, 18 Mar 1996 01:05:51 GMT References: <1996Mar17.235451.8203@pacbell.net> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: Netscape 1.1N Lines: 10 In article <1996Mar17.235451.8203@pacbell.net>, rreyes@pacbell.net (Rodrigo Reyes) 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. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Dave Watanabe Tape trading list upon request. SASE required for international mail. From bnovak@clari.net Mon Mar 18 08:30:51 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!clari!bnovak From: bnovak@clari.net (Brian Novak) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Mar18.083051.9403@clari.net> Date: Mon, 18 Mar 1996 08:30:51 GMT References: <1996Mar17.235451.8203@pacbell.net> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Mar17.235451.8203@pacbell.net>, rreyes@pacbell.net (Rodrigo Reyes) 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. -- Brian Novak *PLONK* filter active for trolls. Amiga 3000T - NetBSD 1.0 From tandersson@cmu.edu Wed Mar 20 01:05:51 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!cmu!tandersson From: tandersson@cmu.edu (Tomas Andersson) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Mar20.010551.8917@cmu.edu> Date: Wed, 20 Mar 1996 01:05:51 GMT References: <1996Mar17.235451.8203@pacbell.net> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Mar17.235451.8203@pacbell.net>, rreyes@pacbell.net (Rodrigo Reyes) 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. -- Tomas Andersson SupraFAXModem 28.8 @ 14,400 bps "Hold for relay." From hkim@u-tokyo.ac.jp Thu Mar 21 20:29:51 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!u-tokyo!hkim From: hkim@u-tokyo.ac.jp (Heather Kim) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Mar21.202951.4207@u-tokyo.ac.jp> Date: Thu, 21 Mar 1996 20:29:51 GMT References: <1996Mar17.235451.8203@pacbell.net> <1996Mar18.083051.9403@clari.net> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Mar18.083051.9403@clari.net>, bnovak@clari.net (Brian Novak) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- === Heather Kim === Dept of Electrical Engineering, University of Tokyo Department of Information Science "The hatch is open. Is anyone listening?"