From mramirez@panix.com Sat Dec 16 20:16:09 1995 Path: ashpoly!cascade!brgate!saturno!panix!mramirez From: mramirez@panix.com (Morag Ramírez) Newsgroups: comp.sys.m68k Subject: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec16.201609.4267@panix.com> Date: Sat, 16 Dec 1995 20:16:09 GMT Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: Netscape 1.1N Lines: 10 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Morag Ramírez Tape trading list upon request. SASE required for international mail. From bsmirnov@uu.net Sun Dec 17 12:38:09 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!uu!bsmirnov From: bsmirnov@uu.net (Bruno Smirnov) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec17.123809.1557@uu.net> Date: Sun, 17 Dec 1995 12:38:09 GMT References: <1995Dec16.201609.4267@panix.com> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Dec16.201609.4267@panix.com>, mramirez@panix.com (Morag Ramírez) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Bruno Smirnov Opinions expressed are solely my own and not those of UUNET Technologies, Falls Church VA. ------------------------------------------------------------ From jfischer@cern.ch Tue Dec 19 01:31:09 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!cern!jfischer From: jfischer@cern.ch (Jen Fischer) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec19.013109.2335@cern.ch> Date: Tue, 19 Dec 1995 01:31:09 GMT References: <1995Dec16.201609.4267@panix.com> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Dec16.201609.4267@panix.com>, mramirez@panix.com (Morag Ramírez) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Jen Fischer -- European Laboratory for Particle Physics, Geneva "Do not worship the copy." From mrobertson@pacbell.net Tue Dec 19 15:33:09 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!pacbell!mrobertson From: mrobertson@pacbell.net (Mikhail Robertson) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec19.153309.8481@pacbell.net> Date: Tue, 19 Dec 1995 15:33:09 GMT References: <1995Dec16.201609.4267@panix.com> <1995Dec17.123809.1557@uu.net> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995Dec17.123809.1557@uu.net>, bsmirnov@uu.net (Bruno Smirnov) 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. -- Mikhail Robertson Tape trading list upon request. SASE required for international mail. From hokonkwo@panix.com Wed Dec 20 15:38:09 1995 Path: ashpoly!cascade!brgate!saturno!panix!hokonkwo From: hokonkwo@panix.com (Heather Okonkwo) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec20.153809.6560@panix.com> Date: Wed, 20 Dec 1995 15:38:09 GMT References: <1995Dec16.201609.4267@panix.com> <1995Dec17.123809.1557@uu.net> <1995Dec19.153309.8481@pacbell.net> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Dec19.153309.8481@pacbell.net>, mrobertson@pacbell.net (Mikhail Robertson) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. If you are posting from AOL, please read RFC 1036 before posting again. -- Heather Okonkwo *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0