From npopov@cmu.edu Sun Jan 01 11:33:38 1995 Path: ashpoly!cascade!brgate!saturno!cmu!npopov From: npopov@cmu.edu (Natalia Popov) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan01.113338.7939@cmu.edu> Date: Sun, 01 Jan 1995 11:33:38 GMT Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: NewsWatcher 2.0b24 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. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Anyone running this on a Quadra 840AV with the 68040? -- Natalia Popov *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0 From jbrennan@illinois.edu Mon Jan 02 22:53:38 1995 Path: ashpoly!cascade!transat!ukc!fennimore!illinois!jbrennan From: jbrennan@illinois.edu (Julien Brennan) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan02.225338.9278@illinois.edu> Date: Mon, 02 Jan 1995 22:53:38 GMT References: <1995Jan01.113338.7939@cmu.edu> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Jan01.113338.7939@cmu.edu>, npopov@cmu.edu (Natalia Popov) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Julien Brennan "5 sigma is a discovery. 7 is a question." Amiga 1200 (Blizzard 030/50) / SunOS 4.1.4 From kfournier@titech.ac.jp Tue Jan 03 03:54:38 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!titech!kfournier From: kfournier@titech.ac.jp (Kenji Fournier) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan03.035438.1771@titech.ac.jp> Date: Tue, 03 Jan 1995 03:54:38 GMT References: <1995Jan01.113338.7939@cmu.edu> <1995Jan02.225338.9278@illinois.edu> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jan02.225338.9278@illinois.edu>, jbrennan@illinois.edu (Julien Brennan) 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. -- Kenji Fournier "There are 14 nodes and only 10 countries. Count again." Mac IIci / 68882 FPU / NEXTSTEP 3.3 From mkim@inria.fr Tue Jan 03 10:52:38 1995 Path: ashpoly!cascade!brgate!saturno!inria!mkim From: mkim@inria.fr (Mathieu Kim) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan03.105238.7374@inria.fr> Date: Tue, 03 Jan 1995 10:52:38 GMT References: <1995Jan01.113338.7939@cmu.edu> <1995Jan02.225338.9278@illinois.edu> <1995Jan03.035438.1771@titech.ac.jp> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Jan03.035438.1771@titech.ac.jp>, kfournier@titech.ac.jp (Kenji Fournier) 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. -- Mathieu Kim "A soul is not exclusive to biology." Mac IIci / 68882 FPU / SunOS 4.1.4