From dweber@demon.co.uk Thu Jul 28 09:14:58 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!demon!dweber From: dweber@demon.co.uk (Dave Weber) Newsgroups: comp.sys.m68k Subject: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Jul28.091458.7004@demon.co.uk> Date: Thu, 28 Jul 1994 09:14:58 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: Netscape 1.1N Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Anyone running this on a Quadra 840AV with the 68040? -- Dave Weber Practical Peripherals 14.4 @ 33,600 bps "The hatch is open. Is anyone listening?" From amoreau@earthlink.net Sat Jul 30 01:51:58 1994 Path: ashpoly!cascade!transat!ukc!fennimore!earthlink!amoreau From: amoreau@earthlink.net (Andrei Moreau) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Jul30.015158.1226@earthlink.net> Date: Sat, 30 Jul 1994 01:51:58 GMT References: <1994Jul28.091458.7004@demon.co.uk> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1994Jul28.091458.7004@demon.co.uk>, dweber@demon.co.uk (Dave Weber) 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. -- Andrei Moreau -- EarthLink Network "Hardware is temporary. The signal survives." From hcampbell@cmu.edu Sun Jul 31 00:59:58 1994 Path: ashpoly!cascade!brgate!saturno!cmu!hcampbell From: hcampbell@cmu.edu (Hugo Campbell) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Jul31.005958.7317@cmu.edu> Date: Sun, 31 Jul 1994 00:59:58 GMT References: <1994Jul28.091458.7004@demon.co.uk> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 12 In article <1994Jul28.091458.7004@demon.co.uk>, dweber@demon.co.uk (Dave Weber) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Hugo Campbell Hayes Optima 288 @ 33,600 bps "They will send a copy in my place." From sramirez@pipeline.com Mon Aug 01 10:16:58 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!pipeline!sramirez From: sramirez@pipeline.com (Sun-mi Ramírez) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Aug01.101658.4935@pipeline.com> Date: Mon, 01 Aug 1994 10:16:58 GMT References: <1994Jul28.091458.7004@demon.co.uk> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1994Jul28.091458.7004@demon.co.uk>, dweber@demon.co.uk (Dave Weber) 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. Top-posters will be placed in my ~/.killfile without notice. -- === Sun-mi Ramírez === Dept of Electrical Engineering, The Pipeline Internet Network "Do not worship the copy." From deriksson@mindspring.com Mon Aug 01 23:16:58 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!mindspring!deriksson From: deriksson@mindspring.com (Dong-hyun Eriksson) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Aug01.231658.2332@mindspring.com> Date: Mon, 01 Aug 1994 23:16:58 GMT References: <1994Jul28.091458.7004@demon.co.uk> <1994Jul31.005958.7317@cmu.edu> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Jul31.005958.7317@cmu.edu>, hcampbell@cmu.edu (Hugo Campbell) 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. -- Dong-hyun Eriksson Zyxel U-1496E @ 19,200 bps "Measuring a record you own is listening, not piracy."