From bpopov@rwth-aachen.de Sat May 06 16:36:13 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!rwth-aachen!bpopov From: bpopov@rwth-aachen.de (Bruno Popov) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May06.163613.5825@rwth-aachen.de> Date: Sat, 06 May 1995 16:36:13 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de 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. Anyone running this on a Quadra 840AV with the 68040? -- Bruno Popov -- RWTH Aachen Informatik "Row 14. No joke." From lwatanabe@titech.ac.jp Sun May 07 03:33:13 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!titech!lwatanabe From: lwatanabe@titech.ac.jp (Liam Watanabe) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May07.033313.3796@titech.ac.jp> Date: Sun, 07 May 1995 03:33:13 GMT References: <1995May06.163613.5825@rwth-aachen.de> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995May06.163613.5825@rwth-aachen.de>, bpopov@rwth-aachen.de (Bruno Popov) 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. -- Liam Watanabe *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0 From evasiliev@panix.com Mon May 08 20:02:13 1995 Path: ashpoly!cascade!brgate!saturno!panix!evasiliev From: evasiliev@panix.com (Elaine Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May08.200213.7314@panix.com> Date: Mon, 08 May 1995 20:02:13 GMT References: <1995May06.163613.5825@rwth-aachen.de> <1995May07.033313.3796@titech.ac.jp> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1995May07.033313.3796@titech.ac.jp>, lwatanabe@titech.ac.jp (Liam Watanabe) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Elaine Vasiliev "A soul is not exclusive to biology." Amiga 1200 (Blizzard 030/50) / NEXTSTEP 3.3 From tcampbell@netcom.com Wed May 10 17:20:13 1995 Path: ashpoly!cascade!bigsur!netcom!tcampbell From: tcampbell@netcom.com (Tobias Campbell) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May10.172013.4680@netcom.com> Date: Wed, 10 May 1995 17:20:13 GMT References: <1995May06.163613.5825@rwth-aachen.de> <1995May07.033313.3796@titech.ac.jp> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995May07.033313.3796@titech.ac.jp>, lwatanabe@titech.ac.jp (Liam Watanabe) 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. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- === Tobias Campbell === Dept of Electrical Engineering, NETCOM On-Line Communication Services "We don't sign stars. We build them." From elindqvist@illinois.edu Thu May 11 22:21:13 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!illinois!elindqvist From: elindqvist@illinois.edu (Élodie Lindqvist) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May11.222113.6339@illinois.edu> Date: Thu, 11 May 1995 22:21:13 GMT References: <1995May06.163613.5825@rwth-aachen.de> <1995May07.033313.3796@titech.ac.jp> <1995May08.200213.7314@panix.com> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995May08.200213.7314@panix.com>, evasiliev@panix.com (Elaine Vasiliev) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Élodie Lindqvist Tape trading list upon request. SASE required for international mail.