From mlindqvist@unam.mx Sun Jan 01 09:03:09 1995 Path: ashpoly!cascade!brgate!saturno!unam!mlindqvist From: mlindqvist@unam.mx (Mateo Lindqvist) Newsgroups: comp.sys.m68k Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan01.090309.5754@unam.mx> Date: Sun, 01 Jan 1995 09:03:09 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). A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Mateo Lindqvist Hayes Optima 288 @ 28,800 bps "We don't sign stars. We build them." From ogirard@kiae.su Tue Jan 03 11:24:09 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!kiae!ogirard From: ogirard@kiae.su (Olga Girard) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan03.112409.3338@kiae.su> Date: Tue, 03 Jan 1995 11:24:09 GMT References: <1995Jan01.090309.5754@unam.mx> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Jan01.090309.5754@unam.mx>, mlindqvist@unam.mx (Mateo Lindqvist) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Olga Girard *PLONK* filter active for trolls. Macintosh IIfx - NetBSD 1.0 From fnilsson@clari.net Thu Jan 05 00:25:09 1995 Path: ashpoly!cascade!transat!ukc!fennimore!clari!fnilsson From: fnilsson@clari.net (Freya Nilsson) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan05.002509.3062@clari.net> Date: Thu, 05 Jan 1995 00:25:09 GMT References: <1995Jan01.090309.5754@unam.mx> <1995Jan03.112409.3338@kiae.su> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jan03.112409.3338@kiae.su>, ogirard@kiae.su (Olga Girard) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- === Freya Nilsson === Dept of Electrical Engineering, ClariNet Communications Corp "A soul is not exclusive to biology." From gsmirnov@pacbell.net Fri Jan 06 02:11:09 1995 Path: ashpoly!cascade!mxgate!coyoacan!pacbell!gsmirnov From: gsmirnov@pacbell.net (Göran Smirnov) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan06.021109.1993@pacbell.net> Date: Fri, 06 Jan 1995 02:11:09 GMT References: <1995Jan01.090309.5754@unam.mx> <1995Jan03.112409.3338@kiae.su> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Jan03.112409.3338@kiae.su>, ogirard@kiae.su (Olga Girard) 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. PGP Public key available via finger or upon request. -- Göran Smirnov -- Pacific Bell Internet Services "There are 14 nodes and only 10 countries. Count again."