From egarcia@utexas.edu Fri Aug 18 16:14:30 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!utexas!egarcia From: egarcia@utexas.edu (Emi García) Newsgroups: comp.sys.m68k Subject: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug18.161430.9138@utexas.edu> Date: Fri, 18 Aug 1995 16:14:30 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 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. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Emi García *PLONK* filter active for trolls. Sun 3/60 (SunOS 4.1.1) - NetBSD 1.0 From bsokolov@rwth-aachen.de Sun Aug 20 06:35:30 1995 Path: ashpoly!cascade!brgate!saturno!rwth-aachen!bsokolov From: bsokolov@rwth-aachen.de (Brian Sokolov) Newsgroups: comp.sys.m68k Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug20.063530.8018@rwth-aachen.de> Date: Sun, 20 Aug 1995 06:35:30 GMT References: <1995Aug18.161430.9138@utexas.edu> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Aug18.161430.9138@utexas.edu>, egarcia@utexas.edu (Emi 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. -- Brian Sokolov "The hatch is open. Is anyone listening?" Commodore Amiga 500 (1MB OCS) / System 7.5.1 From blaurent@netcom.com Tue Aug 22 08:59:30 1995 Path: ashpoly!cascade!bigsur!netcom!blaurent From: blaurent@netcom.com (Brian Laurent) Newsgroups: comp.sys.m68k Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug22.085930.1256@netcom.com> Date: Tue, 22 Aug 1995 08:59:30 GMT References: <1995Aug18.161430.9138@utexas.edu> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: TIN [version 1.2 PL2] Lines: 12 In article <1995Aug18.161430.9138@utexas.edu>, egarcia@utexas.edu (Emi 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. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Brian Laurent "In theory there is no difference between theory and practice." Pentium 90 (OS/2 Warp) / NEXTSTEP 3.3 From amuller@pacbell.net Tue Aug 22 10:12:30 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!pacbell!amuller From: amuller@pacbell.net (Anja Müller) Newsgroups: comp.sys.m68k Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug22.101230.8682@pacbell.net> Date: Tue, 22 Aug 1995 10:12:30 GMT References: <1995Aug18.161430.9138@utexas.edu> <1995Aug20.063530.8018@rwth-aachen.de> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: Netscape 1.1N Lines: 8 In article <1995Aug20.063530.8018@rwth-aachen.de>, bsokolov@rwth-aachen.de (Brian Sokolov) 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. -- Anja Müller -- Pacific Bell Internet Services "Marcus is not one man."