From dkowalski@illinois.edu Mon Dec 11 16:06:03 1995 Path: ashpoly!cascade!brgate!saturno!illinois!dkowalski From: dkowalski@illinois.edu (Diego Kowalski) Newsgroups: comp.sys.m68k Subject: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec11.160603.4183@illinois.edu> Date: Mon, 11 Dec 1995 16:06:03 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.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). 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. -- === Diego Kowalski === Dept of Electrical Engineering, University of Illinois Urbana-Champaign "Marcus is not one man." From twatanabe@purdue.edu Tue Dec 12 21:51:03 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!purdue!twatanabe From: twatanabe@purdue.edu (Tobias Watanabe) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec12.215103.6253@purdue.edu> Date: Tue, 12 Dec 1995 21:51:03 GMT References: <1995Dec11.160603.4183@illinois.edu> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 12 In article <1995Dec11.160603.4183@illinois.edu>, dkowalski@illinois.edu (Diego Kowalski) 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. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Tobias Watanabe "A soul is not exclusive to biology." Mac IIci / 68882 FPU / NEXTSTEP 3.3