From nrodriguez@uni-hamburg.de Thu Nov 03 23:48:31 1994 Path: ashpoly!cascade!brgate!saturno!uni-hamburg!nrodriguez From: nrodriguez@uni-hamburg.de (Nadine Rodríguez) Newsgroups: comp.sys.m68k Subject: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov03.234831.5883@uni-hamburg.de> Date: Thu, 03 Nov 1994 23:48:31 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: TIN [version 1.2 PL2] Lines: 10 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Anyone running this on a Quadra 840AV with the 68040? -- Nadine Rodríguez Tape trading list upon request. SASE required for international mail. From hmoreno@stanford.edu Sat Nov 05 01:24:31 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!stanford!hmoreno From: hmoreno@stanford.edu (Hana Moreno) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov05.012431.7852@stanford.edu> Date: Sat, 05 Nov 1994 01:24:31 GMT References: <1994Nov03.234831.5883@uni-hamburg.de> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1994Nov03.234831.5883@uni-hamburg.de>, nrodriguez@uni-hamburg.de (Nadine Rodríguez) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Top-posters will be placed in my ~/.killfile without notice. -- === Hana Moreno === Dept of Electrical Engineering, Stanford University Computer Systems Lab "Hardware is temporary. The signal survives." From hnilsson@uu.net Sat Nov 05 21:41:31 1994 Path: ashpoly!cascade!bigsur!uu!hnilsson From: hnilsson@uu.net (Hana Nilsson) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov05.214131.5243@uu.net> Date: Sat, 05 Nov 1994 21:41:31 GMT References: <1994Nov03.234831.5883@uni-hamburg.de> <1994Nov05.012431.7852@stanford.edu> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Nov05.012431.7852@stanford.edu>, hmoreno@stanford.edu (Hana Moreno) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Hana Nilsson Opinions expressed are solely my own and not those of UUNET Technologies, Falls Church VA. ------------------------------------------------------------ From jchoi@illinois.edu Mon Nov 07 00:36:31 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!illinois!jchoi From: jchoi@illinois.edu (Jens Choi) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov07.003631.7070@illinois.edu> Date: Mon, 07 Nov 1994 00:36:31 GMT References: <1994Nov03.234831.5883@uni-hamburg.de> <1994Nov05.012431.7852@stanford.edu> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Nov05.012431.7852@stanford.edu>, hmoreno@stanford.edu (Hana Moreno) 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. -- Jens Choi Hayes Optima 288 @ 28,800 bps "There are 14 nodes and only 10 countries. Count again." From aweber@cam.ac.uk Mon Nov 07 13:46:31 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!cam!aweber From: aweber@cam.ac.uk (Amy Weber) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov07.134631.1289@cam.ac.uk> Date: Mon, 07 Nov 1994 13:46:31 GMT References: <1994Nov03.234831.5883@uni-hamburg.de> <1994Nov05.012431.7852@stanford.edu> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Nov05.012431.7852@stanford.edu>, hmoreno@stanford.edu (Hana Moreno) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. > Top-posters will be placed in my ~/.killfile without notice. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Amy Weber Opinions expressed are solely my own and not those of University of Cambridge Computer Laboratory. ------------------------------------------------------------