From mcampbell@clari.net Fri Dec 01 05:07:09 1995 Path: ashpoly!cascade!bigsur!clari!mcampbell From: mcampbell@clari.net (Morag Campbell) Newsgroups: comp.sys.m68k Subject: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec01.050709.2286@clari.net> Date: Fri, 01 Dec 1995 05:07:09 GMT Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Morag Campbell *PLONK* filter active for trolls. Amiga 3000T - NetBSD 1.0 From noliveira@inria.fr Fri Dec 01 19:31:09 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!inria!noliveira From: noliveira@inria.fr (Nadia Oliveira) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec01.193109.4237@inria.fr> Date: Fri, 01 Dec 1995 19:31:09 GMT References: <1995Dec01.050709.2286@clari.net> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Dec01.050709.2286@clari.net>, mcampbell@clari.net (Morag Campbell) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Nadia Oliveira Opinions expressed are solely my own and not those of INRIA Rocquencourt. ------------------------------------------------------------ From asokolov@rwth-aachen.de Sat Dec 02 04:52:09 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!rwth-aachen!asokolov From: asokolov@rwth-aachen.de (Amy Sokolov) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec02.045209.4012@rwth-aachen.de> Date: Sat, 02 Dec 1995 04:52:09 GMT References: <1995Dec01.050709.2286@clari.net> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Dec01.050709.2286@clari.net>, mcampbell@clari.net (Morag Campbell) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Amy Sokolov | asokolov@rwth-aachen.de PGP Key fingerprint: 12C5 3B08 FEFB 042E "Keep the channels open." From jtanaka@rwth-aachen.de Sat Dec 02 16:47:09 1995 Path: ashpoly!cascade!brgate!saturno!rwth-aachen!jtanaka From: jtanaka@rwth-aachen.de (Jen Tanaka) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec02.164709.4597@rwth-aachen.de> Date: Sat, 02 Dec 1995 16:47:09 GMT References: <1995Dec01.050709.2286@clari.net> <1995Dec02.045209.4012@rwth-aachen.de> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Dec02.045209.4012@rwth-aachen.de>, asokolov@rwth-aachen.de (Amy Sokolov) 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. -- === Jen Tanaka === Dept of Electrical Engineering, RWTH Aachen Informatik "A soul is not exclusive to biology."