From tmoreno@uu.net Wed Jul 10 22:00:29 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!uu!tmoreno From: tmoreno@uu.net (Takeshi Moreno) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul10.220029.5440@uu.net> Date: Wed, 10 Jul 1996 22:00:29 GMT Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.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. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- === Takeshi Moreno === Dept of Electrical Engineering, UUNET Technologies, Falls Church VA "Measuring a record you own is listening, not piracy." From opopov@illinois.edu Fri Jul 12 00:45:29 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!illinois!opopov From: opopov@illinois.edu (Olga Popov) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul12.004529.3183@illinois.edu> Date: Fri, 12 Jul 1996 00:45:29 GMT References: <1996Jul10.220029.5440@uu.net> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: Netscape 1.1N Lines: 8 In article <1996Jul10.220029.5440@uu.net>, tmoreno@uu.net (Takeshi Moreno) 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. -- Olga Popov -- University of Illinois Urbana-Champaign "When every node is whole, the channel opens." From mfournier@uni-hamburg.de Sat Jul 13 02:06:29 1996 Path: ashpoly!cascade!brgate!saturno!uni-hamburg!mfournier From: mfournier@uni-hamburg.de (Morag Fournier) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul13.020629.3803@uni-hamburg.de> Date: Sat, 13 Jul 1996 02:06:29 GMT References: <1996Jul10.220029.5440@uu.net> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Jul10.220029.5440@uu.net>, tmoreno@uu.net (Takeshi Moreno) 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. -- Morag Fournier *PLONK* filter active for trolls. 486DX2/66 (Linux 1.2.13) - NetBSD 1.0 From btakahashi@rwth-aachen.de Sun Jul 14 01:57:29 1996 Path: ashpoly!cascade!bigsur!rwth-aachen!btakahashi From: btakahashi@rwth-aachen.de (Brian Takahashi) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul14.015729.8308@rwth-aachen.de> Date: Sun, 14 Jul 1996 01:57:29 GMT References: <1996Jul10.220029.5440@uu.net> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Jul10.220029.5440@uu.net>, tmoreno@uu.net (Takeshi Moreno) 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 Takahashi === Dept of Electrical Engineering, RWTH Aachen Informatik "There are 14 nodes and only 10 countries. Count again." From mcampbell@clari.net Mon Jul 15 14:57:29 1996 Path: ashpoly!cascade!bigsur!clari!mcampbell From: mcampbell@clari.net (Morag Campbell) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul15.145729.5940@clari.net> Date: Mon, 15 Jul 1996 14:57:29 GMT References: <1996Jul10.220029.5440@uu.net> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Jul10.220029.5440@uu.net>, tmoreno@uu.net (Takeshi Moreno) 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. -- Morag Campbell "A soul is not exclusive to biology." 486DX4/100 (FreeBSD 2.0.5) / System 7.5.1