From hlaurent@stanford.edu Sun Nov 06 16:14:11 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!stanford!hlaurent From: hlaurent@stanford.edu (Hugo Laurent) Newsgroups: comp.sys.m68k Subject: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov06.161411.6459@stanford.edu> Date: Sun, 06 Nov 1994 16:14:11 GMT Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: NewsWatcher 2.0b24 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. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Hugo Laurent Tape trading list upon request. SASE required for international mail. From csilva@u-tokyo.ac.jp Tue Nov 08 12:08:11 1994 Path: ashpoly!cascade!bigsur!u-tokyo!csilva From: csilva@u-tokyo.ac.jp (Callum Silva) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov08.120811.6958@u-tokyo.ac.jp> Date: Tue, 08 Nov 1994 12:08:11 GMT References: <1994Nov06.161411.6459@stanford.edu> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Nov06.161411.6459@stanford.edu>, hlaurent@stanford.edu (Hugo Laurent) 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. -- Callum Silva Zyxel U-1496E @ 9600 Telebit bps "Hardware is temporary. The signal survives." From jstewart@hanse.de Wed Nov 09 21:48:11 1994 Path: ashpoly!cascade!transat!ukc!fennimore!hanse!jstewart From: jstewart@hanse.de (Joachim Stewart) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov09.214811.8766@hanse.de> Date: Wed, 09 Nov 1994 21:48:11 GMT References: <1994Nov06.161411.6459@stanford.edu> <1994Nov08.120811.6958@u-tokyo.ac.jp> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1994Nov08.120811.6958@u-tokyo.ac.jp>, csilva@u-tokyo.ac.jp (Callum Silva) 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. Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Joachim Stewart -- Hanse-Netzwerk Hamburg "Do not worship the copy." From skuznetsov@titech.ac.jp Thu Nov 10 22:49:11 1994 Path: ashpoly!cascade!bigsur!titech!skuznetsov From: skuznetsov@titech.ac.jp (Steve Kuznetsov) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov10.224911.2496@titech.ac.jp> Date: Thu, 10 Nov 1994 22:49:11 GMT References: <1994Nov06.161411.6459@stanford.edu> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Nov06.161411.6459@stanford.edu>, hlaurent@stanford.edu (Hugo Laurent) 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. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Steve Kuznetsov Tape trading list upon request. SASE required for international mail.