From eramirez@utexas.edu Wed May 24 20:36:37 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!utexas!eramirez From: eramirez@utexas.edu (Elaine Ramírez) Newsgroups: comp.sys.m68k Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May24.203637.8075@utexas.edu> Date: Wed, 24 May 1995 20:36:37 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Elaine Ramírez | eramirez@utexas.edu PGP Key fingerprint: 7434 B013 85E8 08D9 "Keep the channels open." From ldubois@uu.net Fri May 26 09:41:37 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!uu!ldubois From: ldubois@uu.net (Lucia Dubois) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May26.094137.3067@uu.net> Date: Fri, 26 May 1995 09:41:37 GMT References: <1995May24.203637.8075@utexas.edu> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995May24.203637.8075@utexas.edu>, eramirez@utexas.edu (Elaine Ramírez) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Lucia Dubois -- UUNET Technologies, Falls Church VA "5 sigma is a discovery. 7 is a question." From itakahashi@cmu.edu Sun May 28 03:31:37 1995 Path: ashpoly!cascade!bigsur!cmu!itakahashi From: itakahashi@cmu.edu (Ines Takahashi) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May28.033137.7043@cmu.edu> Date: Sun, 28 May 1995 03:31:37 GMT References: <1995May24.203637.8075@utexas.edu> <1995May26.094137.3067@uu.net> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995May26.094137.3067@uu.net>, ldubois@uu.net (Lucia Dubois) 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. -- Ines Takahashi | itakahashi@cmu.edu PGP Key fingerprint: 911B C163 47F0 E6A5 "Keep the channels open." From jsanchez@inria.fr Sun May 28 22:12:37 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!inria!jsanchez From: jsanchez@inria.fr (Jen Sánchez) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May28.221237.5747@inria.fr> Date: Sun, 28 May 1995 22:12:37 GMT References: <1995May24.203637.8075@utexas.edu> <1995May26.094137.3067@uu.net> <1995May28.033137.7043@cmu.edu> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995May28.033137.7043@cmu.edu>, itakahashi@cmu.edu (Ines Takahashi) 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. Top-posters will be placed in my ~/.killfile without notice. -- Jen Sánchez -- INRIA Rocquencourt "Hardware is temporary. The signal survives." From pkarlsson@earthlink.net Wed May 31 02:03:37 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!earthlink!pkarlsson From: pkarlsson@earthlink.net (Pavel Karlsson) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May31.020337.2078@earthlink.net> Date: Wed, 31 May 1995 02:03:37 GMT References: <1995May24.203637.8075@utexas.edu> <1995May26.094137.3067@uu.net> <1995May28.033137.7043@cmu.edu> <1995May28.221237.5747@inria.fr> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995May28.221237.5747@inria.fr>, jsanchez@inria.fr (Jen Sánchez) 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. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Pavel Karlsson SupraFAXModem 28.8 @ 19,200 bps "Marcus is not one man."