From mkarlsson@uni-hamburg.de Tue Nov 22 08:39:23 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!uni-hamburg!mkarlsson From: mkarlsson@uni-hamburg.de (Mikhail Karlsson) Newsgroups: comp.sys.m68k Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov22.083923.2873@uni-hamburg.de> Date: Tue, 22 Nov 1994 08:39:23 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. 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? -- Mikhail Karlsson | mkarlsson@uni-hamburg.de PGP Key fingerprint: 5665 135E 124D 714E "Keep the channels open." From eandersson@cmu.edu Wed Nov 23 05:23:23 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cmu!eandersson From: eandersson@cmu.edu (Elaine Andersson) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov23.052323.5551@cmu.edu> Date: Wed, 23 Nov 1994 05:23:23 GMT References: <1994Nov22.083923.2873@uni-hamburg.de> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1994Nov22.083923.2873@uni-hamburg.de>, mkarlsson@uni-hamburg.de (Mikhail Karlsson) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Elaine Andersson "Extraordinary claims require extraordinary spectra." Amiga 1200 (Blizzard 030/50) / NEXTSTEP 3.3 From jivanov@kiae.su Thu Nov 24 15:42:23 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!kiae!jivanov From: jivanov@kiae.su (Jens Ivanov) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov24.154223.1073@kiae.su> Date: Thu, 24 Nov 1994 15:42:23 GMT References: <1994Nov22.083923.2873@uni-hamburg.de> <1994Nov23.052323.5551@cmu.edu> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Nov23.052323.5551@cmu.edu>, eandersson@cmu.edu (Elaine Andersson) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- === Jens Ivanov === Dept of Electrical Engineering, Kurchatov Institute of Atomic Energy, Moscow "Row 14. No joke." From aschneider@tum.de Fri Nov 25 16:53:23 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!tum!aschneider From: aschneider@tum.de (Amy Schneider) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov25.165323.8540@tum.de> Date: Fri, 25 Nov 1994 16:53:23 GMT References: <1994Nov22.083923.2873@uni-hamburg.de> <1994Nov23.052323.5551@cmu.edu> <1994Nov24.154223.1073@kiae.su> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Nov24.154223.1073@kiae.su>, jivanov@kiae.su (Jens Ivanov) 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. -- Amy Schneider *PLONK* filter active for trolls. Sun SparcStation 20 - NetBSD 1.0