From rsato@berkeley.edu Sun Nov 26 04:42:38 1995 Path: ashpoly!cascade!bigsur!berkeley!rsato From: rsato@berkeley.edu (Raj Sato) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov26.044238.6245@berkeley.edu> Date: Sun, 26 Nov 1995 04:42:38 GMT Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: Netscape 1.1N Lines: 10 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. -- Raj Sato Tape trading list upon request. SASE required for international mail. From fbrennan@mindspring.com Mon Nov 27 17:20:38 1995 Path: ashpoly!cascade!bigsur!mindspring!fbrennan From: fbrennan@mindspring.com (Fiona Brennan) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov27.172038.1598@mindspring.com> Date: Mon, 27 Nov 1995 17:20:38 GMT References: <1995Nov26.044238.6245@berkeley.edu> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Nov26.044238.6245@berkeley.edu>, rsato@berkeley.edu (Raj Sato) 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. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Fiona Brennan "The carrier frequency does not drift by accident." Atari Falcon 030 / Linux 1.2.13 From akowalski@illinois.edu Wed Nov 29 17:22:38 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!illinois!akowalski From: akowalski@illinois.edu (Astrid Kowalski) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov29.172238.3713@illinois.edu> Date: Wed, 29 Nov 1995 17:22:38 GMT References: <1995Nov26.044238.6245@berkeley.edu> <1995Nov27.172038.1598@mindspring.com> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Nov27.172038.1598@mindspring.com>, fbrennan@mindspring.com (Fiona Brennan) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. > Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Astrid Kowalski Zyxel U-1496E @ 14,400 bps "Hardware is temporary. The signal survives."