From akowalski@delphi.com Sun Apr 28 18:33:33 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!delphi!akowalski From: akowalski@delphi.com (Andrei Kowalski) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Apr28.183333.1609@delphi.com> Date: Sun, 28 Apr 1996 18:33:33 GMT Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? 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? -- Andrei Kowalski *PLONK* filter active for trolls. Macintosh IIfx - NetBSD 1.0 From nvasiliev@stanford.edu Mon Apr 29 04:57:33 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!stanford!nvasiliev From: nvasiliev@stanford.edu (Natalia Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Apr29.045733.1555@stanford.edu> Date: Mon, 29 Apr 1996 04:57:33 GMT References: <1996Apr28.183333.1609@delphi.com> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1996Apr28.183333.1609@delphi.com>, akowalski@delphi.com (Andrei Kowalski) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? > A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. 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. -- Natalia Vasiliev *PLONK* filter active for trolls. Atari Falcon 030 - NetBSD 1.0