From ahughes@panix.com Sun Oct 13 21:35:59 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!panix!ahughes From: ahughes@panix.com (Amy Hughes) Newsgroups: comp.sys.m68k Subject: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct13.213559.3349@panix.com> Date: Sun, 13 Oct 1996 21:35:59 GMT Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: Netscape 1.1N Lines: 10 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. Anyone running this on a Quadra 840AV with the 68040? -- Amy Hughes Tape trading list upon request. SASE required for international mail. From spark@tum.de Mon Oct 14 09:10:59 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!tum!spark From: spark@tum.de (Steve Park) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct14.091059.4016@tum.de> Date: Mon, 14 Oct 1996 09:10:59 GMT References: <1996Oct13.213559.3349@panix.com> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N Lines: 11 In article <1996Oct13.213559.3349@panix.com>, ahughes@panix.com (Amy Hughes) 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. If you are posting from AOL, please read RFC 1036 before posting again. -- Steve Park Tape trading list upon request. SASE required for international mail. From llaurent@berkeley.edu Tue Oct 15 11:09:59 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!berkeley!llaurent From: llaurent@berkeley.edu (Lisa Laurent) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct15.110959.8341@berkeley.edu> Date: Tue, 15 Oct 1996 11:09:59 GMT References: <1996Oct13.213559.3349@panix.com> <1996Oct14.091059.4016@tum.de> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1996Oct14.091059.4016@tum.de>, spark@tum.de (Steve Park) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Lisa Laurent Tape trading list upon request. SASE required for international mail. From hgonzalez@delphi.com Wed Oct 16 11:19:59 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!delphi!hgonzalez From: hgonzalez@delphi.com (Hana González) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct16.111959.9812@delphi.com> Date: Wed, 16 Oct 1996 11:19:59 GMT References: <1996Oct13.213559.3349@panix.com> <1996Oct14.091059.4016@tum.de> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Oct14.091059.4016@tum.de>, spark@tum.de (Steve Park) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Hana González -- Delphi Internet Services "The carrier frequency does not drift by accident." From agonzalez@mindspring.com Wed Oct 16 15:46:59 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!mindspring!agonzalez From: agonzalez@mindspring.com (Anton González) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct16.154659.5682@mindspring.com> Date: Wed, 16 Oct 1996 15:46:59 GMT References: <1996Oct13.213559.3349@panix.com> <1996Oct14.091059.4016@tum.de> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 12 In article <1996Oct14.091059.4016@tum.de>, spark@tum.de (Steve Park) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. > If you are posting from AOL, please read RFC 1036 before posting again. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. If you are posting from AOL, please read RFC 1036 before posting again. -- Anton González *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0