From amacdonald@utexas.edu Fri Apr 12 07:21:15 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!utexas!amacdonald From: amacdonald@utexas.edu (Amy MacDonald) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Apr12.072115.2330@utexas.edu> Date: Fri, 12 Apr 1996 07:21:15 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu 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. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Anyone running this on a Quadra 840AV with the 68040? -- Amy MacDonald *PLONK* filter active for trolls. Commodore Amiga 500 (1MB OCS) - NetBSD 1.0 From bmoreau@mindspring.com Fri Apr 12 15:16:15 1996 Path: ashpoly!cascade!transat!ukc!fennimore!mindspring!bmoreau From: bmoreau@mindspring.com (Bill Moreau) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Apr12.151615.8444@mindspring.com> Date: Fri, 12 Apr 1996 15:16:15 GMT References: <1996Apr12.072115.2330@utexas.edu> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1996Apr12.072115.2330@utexas.edu>, amacdonald@utexas.edu (Amy MacDonald) writes: > 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. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. If you are posting from AOL, please read RFC 1036 before posting again. -- Bill Moreau *PLONK* filter active for trolls. Decstation 5000/200 - NetBSD 1.0 From ejohansson@tum.de Sat Apr 13 16:17:15 1996 Path: ashpoly!cascade!transat!ukc!fennimore!tum!ejohansson From: ejohansson@tum.de (Élodie Johansson) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Apr13.161715.9778@tum.de> Date: Sat, 13 Apr 1996 16:17:15 GMT References: <1996Apr12.072115.2330@utexas.edu> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Apr12.072115.2330@utexas.edu>, amacdonald@utexas.edu (Amy MacDonald) 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. -- Élodie Johansson Zyxel U-1496E @ 9600 Telebit bps "We don't sign stars. We build them." From dsantos@cern.ch Sun Apr 14 11:21:15 1996 Path: ashpoly!cascade!transat!ukc!fennimore!cern!dsantos From: dsantos@cern.ch (Dong-hyun Santos) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Apr14.112115.2070@cern.ch> Date: Sun, 14 Apr 1996 11:21:15 GMT References: <1996Apr12.072115.2330@utexas.edu> <1996Apr12.151615.8444@mindspring.com> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Apr12.151615.8444@mindspring.com>, bmoreau@mindspring.com (Bill Moreau) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Dong-hyun Santos "Marcus is not one man." Amiga 3000T / TOS 4.04