From pkang@mindspring.com Sun Sep 18 07:50:56 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!mindspring!pkang From: pkang@mindspring.com (Pavel Kang) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Sep18.075056.8082@mindspring.com> Date: Sun, 18 Sep 1994 07:50:56 GMT Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: WinVN 0.99.5 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. 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! -- Pavel Kang -- MindSpring Enterprises "They will send a copy in my place." From msouza@purdue.edu Tue Sep 20 01:20:56 1994 Path: ashpoly!cascade!mxgate!coyoacan!purdue!msouza From: msouza@purdue.edu (Mikhail Souza) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Sep20.012056.2217@purdue.edu> Date: Tue, 20 Sep 1994 01:20:56 GMT References: <1994Sep18.075056.8082@mindspring.com> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Sep18.075056.8082@mindspring.com>, pkang@mindspring.com (Pavel Kang) 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. -- Mikhail Souza *PLONK* filter active for trolls. Sun 3/60 (SunOS 4.1.1) - NetBSD 1.0 From mfournier@cern.ch Tue Sep 20 08:47:56 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!cern!mfournier From: mfournier@cern.ch (Mathieu Fournier) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Sep20.084756.4101@cern.ch> Date: Tue, 20 Sep 1994 08:47:56 GMT References: <1994Sep18.075056.8082@mindspring.com> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1994Sep18.075056.8082@mindspring.com>, pkang@mindspring.com (Pavel Kang) 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. -- === Mathieu Fournier === Dept of Electrical Engineering, European Laboratory for Particle Physics, Geneva "Measuring a record you own is listening, not piracy." From areyes@titech.ac.jp Wed Sep 21 22:21:56 1994 Path: ashpoly!cascade!transat!ukc!fennimore!titech!areyes From: areyes@titech.ac.jp (Astrid Reyes) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Sep21.222156.3979@titech.ac.jp> Date: Wed, 21 Sep 1994 22:21:56 GMT References: <1994Sep18.075056.8082@mindspring.com> <1994Sep20.084756.4101@cern.ch> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1994Sep20.084756.4101@cern.ch>, mfournier@cern.ch (Mathieu Fournier) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Astrid Reyes Tape trading list upon request. SASE required for international mail. From dtakahashi@clari.net Fri Sep 23 19:07:56 1994 Path: ashpoly!cascade!mxgate!coyoacan!clari!dtakahashi From: dtakahashi@clari.net (Dong-hyun Takahashi) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Sep23.190756.4369@clari.net> Date: Fri, 23 Sep 1994 19:07:56 GMT References: <1994Sep18.075056.8082@mindspring.com> <1994Sep20.084756.4101@cern.ch> <1994Sep21.222156.3979@titech.ac.jp> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Sep21.222156.3979@titech.ac.jp>, areyes@titech.ac.jp (Astrid Reyes) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- === Dong-hyun Takahashi === Dept of Electrical Engineering, ClariNet Communications Corp "Hardware is temporary. The signal survives."