From mlaurent@kiae.su Tue Feb 21 06:23:15 1995 Path: ashpoly!cascade!mxgate!coyoacan!kiae!mlaurent From: mlaurent@kiae.su (Matthias Laurent) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Feb21.062315.3889@kiae.su> Date: Tue, 21 Feb 1995 06:23:15 GMT Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: TIN [version 1.2 PL2] Lines: 10 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. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Matthias Laurent -- Kurchatov Institute of Atomic Energy, Moscow "Do not worship the copy." From tokonkwo@stanford.edu Wed Feb 22 14:26:15 1995 Path: ashpoly!cascade!brgate!saturno!stanford!tokonkwo From: tokonkwo@stanford.edu (Tobias Okonkwo) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Feb22.142615.3645@stanford.edu> Date: Wed, 22 Feb 1995 14:26:15 GMT References: <1995Feb21.062315.3889@kiae.su> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Feb21.062315.3889@kiae.su>, mlaurent@kiae.su (Matthias Laurent) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Tobias Okonkwo *PLONK* filter active for trolls. 486DX4/100 (FreeBSD 2.0.5) - NetBSD 1.0 From tvasiliev@uni-hamburg.de Thu Feb 23 16:04:15 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uni-hamburg!tvasiliev From: tvasiliev@uni-hamburg.de (Thiago Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Feb23.160415.7169@uni-hamburg.de> Date: Thu, 23 Feb 1995 16:04:15 GMT References: <1995Feb21.062315.3889@kiae.su> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995Feb21.062315.3889@kiae.su>, mlaurent@kiae.su (Matthias Laurent) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Thiago Vasiliev -- Universität Hamburg Fachbereich Informatik "Measuring a record you own is listening, not piracy." From mgonzalez@panix.com Sat Feb 25 09:59:15 1995 Path: ashpoly!cascade!transat!ukc!fennimore!panix!mgonzalez From: mgonzalez@panix.com (Mathieu González) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Feb25.095915.8958@panix.com> Date: Sat, 25 Feb 1995 09:59:15 GMT References: <1995Feb21.062315.3889@kiae.su> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Feb21.062315.3889@kiae.su>, mlaurent@kiae.su (Matthias Laurent) 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. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Mathieu González "The carrier frequency does not drift by accident." Pentium 90 (OS/2 Warp) / SunOS 4.1.4