From msantos@uu.net Wed May 11 12:29:44 1994 Path: ashpoly!cascade!transat!ukc!fennimore!uu!msantos From: msantos@uu.net (Min-jun Santos) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994May11.122944.1147@uu.net> Date: Wed, 11 May 1994 12:29:44 GMT Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. 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! -- Min-jun Santos Hayes Optima 288 @ 28,800 bps "Do not worship the copy." From vreyes@utexas.edu Thu May 12 05:13:44 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!utexas!vreyes From: vreyes@utexas.edu (Valeria Reyes) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994May12.051344.2456@utexas.edu> Date: Thu, 12 May 1994 05:13:44 GMT References: <1994May11.122944.1147@uu.net> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994May11.122944.1147@uu.net>, msantos@uu.net (Min-jun Santos) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Valeria Reyes Opinions expressed are solely my own and not those of University of Texas at Austin. ------------------------------------------------------------ From kmartinez@pipeline.com Fri May 13 02:08:44 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!pipeline!kmartinez From: kmartinez@pipeline.com (Kenji Martínez) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994May13.020844.3180@pipeline.com> Date: Fri, 13 May 1994 02:08:44 GMT References: <1994May11.122944.1147@uu.net> <1994May12.051344.2456@utexas.edu> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994May12.051344.2456@utexas.edu>, vreyes@utexas.edu (Valeria Reyes) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Kenji Martínez *PLONK* filter active for trolls. Decstation 5000/200 - NetBSD 1.0 From msuzuki@u-tokyo.ac.jp Sat May 14 16:21:44 1994 Path: ashpoly!cascade!mxgate!coyoacan!u-tokyo!msuzuki From: msuzuki@u-tokyo.ac.jp (Matthias Suzuki) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994May14.162144.1138@u-tokyo.ac.jp> Date: Sat, 14 May 1994 16:21:44 GMT References: <1994May11.122944.1147@uu.net> <1994May12.051344.2456@utexas.edu> <1994May13.020844.3180@pipeline.com> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: Netscape 1.1N Lines: 9 In article <1994May13.020844.3180@pipeline.com>, kmartinez@pipeline.com (Kenji Martínez) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Matthias Suzuki | msuzuki@u-tokyo.ac.jp PGP Key fingerprint: B818 076E E625 361F "Keep the channels open." From creyes@panix.com Sun May 15 22:34:44 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!panix!creyes From: creyes@panix.com (Callum Reyes) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994May15.223444.3974@panix.com> Date: Sun, 15 May 1994 22:34:44 GMT References: <1994May11.122944.1147@uu.net> <1994May12.051344.2456@utexas.edu> <1994May13.020844.3180@pipeline.com> <1994May14.162144.1138@u-tokyo.ac.jp> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1994May14.162144.1138@u-tokyo.ac.jp>, msuzuki@u-tokyo.ac.jp (Matthias Suzuki) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Callum Reyes *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0