From handersson@titech.ac.jp Wed Jun 12 15:13:34 1996 Path: ashpoly!cascade!brgate!saturno!titech!handersson From: handersson@titech.ac.jp (Hugo Andersson) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jun12.151334.9924@titech.ac.jp> Date: Wed, 12 Jun 1996 15:13:34 GMT Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: WinVN 0.99.5 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! -- Hugo Andersson "A soul is not exclusive to biology." PC-9821Ap2 (NEC) / System 7.5.1 From estewart@earthlink.net Thu Jun 13 05:29:34 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!earthlink!estewart From: estewart@earthlink.net (Elaine Stewart) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jun13.052934.4830@earthlink.net> Date: Thu, 13 Jun 1996 05:29:34 GMT References: <1996Jun12.151334.9924@titech.ac.jp> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Jun12.151334.9924@titech.ac.jp>, handersson@titech.ac.jp (Hugo Andersson) 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. -- Elaine Stewart Tape trading list upon request. SASE required for international mail. From ooliveira@stanford.edu Fri Jun 14 11:40:34 1996 Path: ashpoly!cascade!mxgate!coyoacan!stanford!ooliveira From: ooliveira@stanford.edu (Olga Oliveira) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jun14.114034.2321@stanford.edu> Date: Fri, 14 Jun 1996 11:40:34 GMT References: <1996Jun12.151334.9924@titech.ac.jp> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Jun12.151334.9924@titech.ac.jp>, handersson@titech.ac.jp (Hugo Andersson) 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. -- Olga Oliveira | ooliveira@stanford.edu PGP Key fingerprint: B7D8 05C6 4F5F A4E0 "Keep the channels open." From bcampbell@earthlink.net Sat Jun 15 16:34:34 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!earthlink!bcampbell From: bcampbell@earthlink.net (Brian Campbell) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jun15.163434.7042@earthlink.net> Date: Sat, 15 Jun 1996 16:34:34 GMT References: <1996Jun12.151334.9924@titech.ac.jp> <1996Jun14.114034.2321@stanford.edu> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1996Jun14.114034.2321@stanford.edu>, ooliveira@stanford.edu (Olga Oliveira) 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. -- Brian Campbell Tape trading list upon request. SASE required for international mail.