From drobertson@demon.co.uk Sun May 05 18:48:48 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!demon!drobertson From: drobertson@demon.co.uk (Dmitri Robertson) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996May05.184848.1566@demon.co.uk> Date: Sun, 05 May 1996 18:48:48 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: Netscape 1.1N Lines: 10 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. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Dmitri Robertson Tape trading list upon request. SASE required for international mail. From nlaurent@purdue.edu Mon May 06 12:45:48 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!purdue!nlaurent From: nlaurent@purdue.edu (Natalia Laurent) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996May06.124548.3778@purdue.edu> Date: Mon, 06 May 1996 12:45:48 GMT References: <1996May05.184848.1566@demon.co.uk> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996May05.184848.1566@demon.co.uk>, drobertson@demon.co.uk (Dmitri Robertson) 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. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Natalia Laurent "We don't sign stars. We build them." Atari Falcon 030 / FreeBSD 2.1 From sjohansson@kth.se Wed May 08 02:16:48 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!kth!sjohansson From: sjohansson@kth.se (Sun-mi Johansson) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996May08.021648.9362@kth.se> Date: Wed, 08 May 1996 02:16:48 GMT References: <1996May05.184848.1566@demon.co.uk> <1996May06.124548.3778@purdue.edu> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1996May06.124548.3778@purdue.edu>, nlaurent@purdue.edu (Natalia Laurent) 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. -- Sun-mi Johansson Tape trading list upon request. SASE required for international mail. From ttakahashi@hanse.de Wed May 08 23:38:48 1996 Path: ashpoly!cascade!bigsur!hanse!ttakahashi From: ttakahashi@hanse.de (Tobias Takahashi) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996May08.233848.9797@hanse.de> Date: Wed, 08 May 1996 23:38:48 GMT References: <1996May05.184848.1566@demon.co.uk> <1996May06.124548.3778@purdue.edu> <1996May08.021648.9362@kth.se> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1996May08.021648.9362@kth.se>, sjohansson@kth.se (Sun-mi Johansson) 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. -- Tobias Takahashi Tape trading list upon request. SASE required for international mail.