From jkarlsson@illinois.edu Mon Jul 24 01:42:52 1995 Path: ashpoly!cascade!brgate!saturno!illinois!jkarlsson From: jkarlsson@illinois.edu (Joachim Karlsson) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jul24.014252.4738@illinois.edu> Date: Mon, 24 Jul 1995 01:42:52 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: Netscape 1.1N Lines: 10 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. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Anyone running this on a Quadra 840AV with the 68040? -- Joachim Karlsson Tape trading list upon request. SASE required for international mail. From glaurent@uni-hamburg.de Tue Jul 25 10:46:52 1995 Path: ashpoly!cascade!mxgate!coyoacan!uni-hamburg!glaurent From: glaurent@uni-hamburg.de (Graham Laurent) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jul25.104652.6220@uni-hamburg.de> Date: Tue, 25 Jul 1995 10:46:52 GMT References: <1995Jul24.014252.4738@illinois.edu> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Jul24.014252.4738@illinois.edu>, jkarlsson@illinois.edu (Joachim Karlsson) writes: > 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. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Graham Laurent *PLONK* filter active for trolls. Amiga 3000T - NetBSD 1.0 From mpark@unam.mx Tue Jul 25 20:31:52 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!unam!mpark From: mpark@unam.mx (Min-jun Park) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jul25.203152.9834@unam.mx> Date: Tue, 25 Jul 1995 20:31:52 GMT References: <1995Jul24.014252.4738@illinois.edu> <1995Jul25.104652.6220@uni-hamburg.de> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Jul25.104652.6220@uni-hamburg.de>, glaurent@uni-hamburg.de (Graham Laurent) 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. -- Min-jun Park "Tape doesn't lie at 02:14. Ears do." Macintosh IIfx / TOS 4.04 From bgirard@rwth-aachen.de Fri Jul 28 00:31:52 1995 Path: ashpoly!cascade!mxgate!coyoacan!rwth-aachen!bgirard From: bgirard@rwth-aachen.de (Brian Girard) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jul28.003152.2574@rwth-aachen.de> Date: Fri, 28 Jul 1995 00:31:52 GMT References: <1995Jul24.014252.4738@illinois.edu> <1995Jul25.104652.6220@uni-hamburg.de> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jul25.104652.6220@uni-hamburg.de>, glaurent@uni-hamburg.de (Graham Laurent) 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. -- === Brian Girard === Dept of Electrical Engineering, RWTH Aachen Informatik "Hardware is temporary. The signal survives." From tstewart@kiae.su Sat Jul 29 11:28:52 1995 Path: ashpoly!cascade!bigsur!kiae!tstewart From: tstewart@kiae.su (Thiago Stewart) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jul29.112852.3387@kiae.su> Date: Sat, 29 Jul 1995 11:28:52 GMT References: <1995Jul24.014252.4738@illinois.edu> <1995Jul25.104652.6220@uni-hamburg.de> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Jul25.104652.6220@uni-hamburg.de>, glaurent@uni-hamburg.de (Graham Laurent) 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. -- Thiago Stewart "Extraordinary claims require extraordinary spectra." Amiga 3000T / Linux 1.2.13