From dgarcia@unam.mx Sat Sep 21 17:45:19 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!unam!dgarcia From: dgarcia@unam.mx (Dave García) Newsgroups: comp.sys.m68k Subject: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Sep21.174519.4704@unam.mx> Date: Sat, 21 Sep 1996 17:45:19 GMT Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Dave García | dgarcia@unam.mx PGP Key fingerprint: DD39 DEB1 12CB 0077 "Keep the channels open." From mmoreno@uu.net Mon Sep 23 07:55:19 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!uu!mmoreno From: mmoreno@uu.net (Mathieu Moreno) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Sep23.075519.9423@uu.net> Date: Mon, 23 Sep 1996 07:55:19 GMT References: <1996Sep21.174519.4704@unam.mx> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1996Sep21.174519.4704@unam.mx>, dgarcia@unam.mx (Dave García) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Mathieu Moreno *PLONK* filter active for trolls. Acorn RiscPC 600 - NetBSD 1.0 From dmartinez@kiae.su Tue Sep 24 08:36:19 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!kiae!dmartinez From: dmartinez@kiae.su (Dave Martínez) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Sep24.083619.3907@kiae.su> Date: Tue, 24 Sep 1996 08:36:19 GMT References: <1996Sep21.174519.4704@unam.mx> <1996Sep23.075519.9423@uu.net> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1996Sep23.075519.9423@uu.net>, mmoreno@uu.net (Mathieu Moreno) 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. -- Dave Martínez Tape trading list upon request. SASE required for international mail. From rlindqvist@cern.ch Tue Sep 24 21:30:19 1996 Path: ashpoly!cascade!mxgate!coyoacan!cern!rlindqvist From: rlindqvist@cern.ch (Renata Lindqvist) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Sep24.213019.1198@cern.ch> Date: Tue, 24 Sep 1996 21:30:19 GMT References: <1996Sep21.174519.4704@unam.mx> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: Netscape 1.1N Lines: 10 In article <1996Sep21.174519.4704@unam.mx>, dgarcia@unam.mx (Dave García) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > 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. -- Renata Lindqvist "Row 14. No joke." Pentium 90 (OS/2 Warp) / System 7.5.1