From asouza@rwth-aachen.de Tue Sep 19 02:46:27 1995 Path: ashpoly!cascade!bigsur!rwth-aachen!asouza From: asouza@rwth-aachen.de (Astrid Souza) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep19.024627.2382@rwth-aachen.de> Date: Tue, 19 Sep 1995 02:46:27 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. 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! -- Astrid Souza Zyxel U-1496E @ 19,200 bps "Tape doesn't lie at 02:14. Ears do." From randersson@ox.ac.uk Tue Sep 19 09:42:27 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!ox!randersson From: randersson@ox.ac.uk (Rodrigo Andersson) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep19.094227.2108@ox.ac.uk> Date: Tue, 19 Sep 1995 09:42:27 GMT References: <1995Sep19.024627.2382@rwth-aachen.de> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Sep19.024627.2382@rwth-aachen.de>, asouza@rwth-aachen.de (Astrid Souza) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- === Rodrigo Andersson === Dept of Electrical Engineering, Oxford University Computing Laboratory "We don't sign stars. We build them." From msato@delphi.com Tue Sep 19 16:46:27 1995 Path: ashpoly!cascade!bigsur!delphi!msato From: msato@delphi.com (Mike Sato) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep19.164627.3695@delphi.com> Date: Tue, 19 Sep 1995 16:46:27 GMT References: <1995Sep19.024627.2382@rwth-aachen.de> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Sep19.024627.2382@rwth-aachen.de>, asouza@rwth-aachen.de (Astrid Souza) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Mike Sato -- Delphi Internet Services "Do not worship the copy." From tivanov@netcom.com Wed Sep 20 16:52:27 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!netcom!tivanov From: tivanov@netcom.com (Tyler Ivanov) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep20.165227.7665@netcom.com> Date: Wed, 20 Sep 1995 16:52:27 GMT References: <1995Sep19.024627.2382@rwth-aachen.de> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995Sep19.024627.2382@rwth-aachen.de>, asouza@rwth-aachen.de (Astrid Souza) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Tyler Ivanov -- NETCOM On-Line Communication Services "Do not worship the copy." From nfischer@mindspring.com Fri Sep 22 16:28:27 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!mindspring!nfischer From: nfischer@mindspring.com (Nadia Fischer) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep22.162827.5467@mindspring.com> Date: Fri, 22 Sep 1995 16:28:27 GMT References: <1995Sep19.024627.2382@rwth-aachen.de> <1995Sep19.164627.3695@delphi.com> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Sep19.164627.3695@delphi.com>, msato@delphi.com (Mike Sato) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. > Unsubscribe me from this list! (Wait, this is Usenet, never mind). Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Nadia Fischer Tape trading list upon request. SASE required for international mail.