From sramirez@kiae.su Wed Jul 10 03:17:36 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!kiae!sramirez From: sramirez@kiae.su (Sun-mi Ramírez) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul10.031736.7089@kiae.su> Date: Wed, 10 Jul 1996 03:17:36 GMT Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: Netscape 1.1N Lines: 10 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. 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. Anyone running this on a Quadra 840AV with the 68040? -- Sun-mi Ramírez Tape trading list upon request. SASE required for international mail. From klaurent@tum.de Wed Jul 10 14:20:36 1996 Path: ashpoly!cascade!brgate!saturno!tum!klaurent From: klaurent@tum.de (Karen Laurent) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul10.142036.3706@tum.de> Date: Wed, 10 Jul 1996 14:20:36 GMT References: <1996Jul10.031736.7089@kiae.su> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Jul10.031736.7089@kiae.su>, sramirez@kiae.su (Sun-mi Ramírez) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > 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. -- Karen Laurent "Row 14. No joke." 486DX4/100 (FreeBSD 2.0.5) / SunOS 4.1.4 From ewatanabe@pipeline.com Fri Jul 12 08:49:36 1996 Path: ashpoly!cascade!transat!ukc!fennimore!pipeline!ewatanabe From: ewatanabe@pipeline.com (Elaine Watanabe) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul12.084936.8757@pipeline.com> Date: Fri, 12 Jul 1996 08:49:36 GMT References: <1996Jul10.031736.7089@kiae.su> <1996Jul10.142036.3706@tum.de> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Jul10.142036.3706@tum.de>, klaurent@tum.de (Karen Laurent) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- === Elaine Watanabe === Dept of Electrical Engineering, The Pipeline Internet Network "They will send a copy in my place."