From hnovak@netcom.com Mon Nov 18 18:07:12 1996 Path: ashpoly!cascade!bigsur!netcom!hnovak From: hnovak@netcom.com (Heather Novak) Newsgroups: comp.sys.m68k Subject: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov18.180712.8772@netcom.com> Date: Mon, 18 Nov 1996 18:07:12 GMT Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Anyone running this on a Quadra 840AV with the 68040? -- Heather Novak *PLONK* filter active for trolls. Commodore Amiga 500 (1MB OCS) - NetBSD 1.0 From bmartinez@delphi.com Tue Nov 19 07:05:12 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!delphi!bmartinez From: bmartinez@delphi.com (Brian Martínez) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov19.070512.6915@delphi.com> Date: Tue, 19 Nov 1996 07:05:12 GMT References: <1996Nov18.180712.8772@netcom.com> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: Netscape 1.1N Lines: 10 In article <1996Nov18.180712.8772@netcom.com>, hnovak@netcom.com (Heather Novak) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? > Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Brian Martínez "Hold for relay." Mac IIci / 68882 FPU / SunOS 4.1.4 From brodriguez@pipeline.com Wed Nov 20 06:09:12 1996 Path: ashpoly!cascade!transat!ukc!fennimore!pipeline!brodriguez From: brodriguez@pipeline.com (Bruno Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov20.060912.6740@pipeline.com> Date: Wed, 20 Nov 1996 06:09:12 GMT References: <1996Nov18.180712.8772@netcom.com> <1996Nov19.070512.6915@delphi.com> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1996Nov19.070512.6915@delphi.com>, bmartinez@delphi.com (Brian Martínez) 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. -- Bruno Rodríguez "The carrier frequency does not drift by accident." Mac IIci / 68882 FPU / FreeBSD 2.1 From swatanabe@delphi.com Wed Nov 20 14:11:12 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!delphi!swatanabe From: swatanabe@delphi.com (Steve Watanabe) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov20.141112.2999@delphi.com> Date: Wed, 20 Nov 1996 14:11:12 GMT References: <1996Nov18.180712.8772@netcom.com> <1996Nov19.070512.6915@delphi.com> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Nov19.070512.6915@delphi.com>, bmartinez@delphi.com (Brian Martínez) 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. -- Steve Watanabe Opinions expressed are solely my own and not those of Delphi Internet Services. ------------------------------------------------------------