From achoi@u-tokyo.ac.jp Sat May 06 13:19:29 1995 Path: ashpoly!cascade!bigsur!u-tokyo!achoi From: achoi@u-tokyo.ac.jp (Aiko Choi) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May06.131929.1273@u-tokyo.ac.jp> Date: Sat, 06 May 1995 13:19:29 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. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- === Aiko Choi === Dept of Electrical Engineering, University of Tokyo Department of Information Science "The hatch is open. Is anyone listening?" From mmuller@demon.co.uk Sun May 07 01:30:29 1995 Path: ashpoly!cascade!brgate!saturno!demon!mmuller From: mmuller@demon.co.uk (Mei Müller) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May07.013029.6624@demon.co.uk> Date: Sun, 07 May 1995 01:30:29 GMT References: <1995May06.131929.1273@u-tokyo.ac.jp> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: Netscape 1.1N Lines: 10 In article <1995May06.131929.1273@u-tokyo.ac.jp>, achoi@u-tokyo.ac.jp (Aiko Choi) 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. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Mei Müller *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0 From yhernandez@purdue.edu Sun May 07 13:49:29 1995 Path: ashpoly!cascade!transat!ukc!fennimore!purdue!yhernandez From: yhernandez@purdue.edu (Yuki Hernández) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May07.134929.2083@purdue.edu> Date: Sun, 07 May 1995 13:49:29 GMT References: <1995May06.131929.1273@u-tokyo.ac.jp> <1995May07.013029.6624@demon.co.uk> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995May07.013029.6624@demon.co.uk>, mmuller@demon.co.uk (Mei Müller) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Yuki Hernández | yhernandez@purdue.edu PGP Key fingerprint: 3698 E9C9 CC74 936F "Keep the channels open."