From lcampbell@rwth-aachen.de Sat Aug 13 07:45:08 1994 Path: ashpoly!cascade!mxgate!coyoacan!rwth-aachen!lcampbell From: lcampbell@rwth-aachen.de (Liam Campbell) Newsgroups: comp.sys.m68k Subject: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Aug13.074508.5022@rwth-aachen.de> Date: Sat, 13 Aug 1994 07:45:08 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de 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. 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? -- Liam Campbell "There are 14 nodes and only 10 countries. Count again." Sun SparcStation 20 / AmigaOS 3.1 From hmuller@cern.ch Sat Aug 13 23:15:08 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!cern!hmuller From: hmuller@cern.ch (Heather Müller) Newsgroups: comp.sys.m68k Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Aug13.231508.9962@cern.ch> Date: Sat, 13 Aug 1994 23:15:08 GMT References: <1994Aug13.074508.5022@rwth-aachen.de> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: Netscape 1.1N Lines: 11 In article <1994Aug13.074508.5022@rwth-aachen.de>, lcampbell@rwth-aachen.de (Liam Campbell) 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. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Heather Müller Tape trading list upon request. SASE required for international mail. From apark@utexas.edu Mon Aug 15 05:08:08 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!utexas!apark From: apark@utexas.edu (Astrid Park) Newsgroups: comp.sys.m68k Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Aug15.050808.8596@utexas.edu> Date: Mon, 15 Aug 1994 05:08:08 GMT References: <1994Aug13.074508.5022@rwth-aachen.de> <1994Aug13.231508.9962@cern.ch> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1994Aug13.231508.9962@cern.ch>, hmuller@cern.ch (Heather Müller) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. > Unsubscribe me from this list! (Wait, this is Usenet, never mind). Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Astrid Park Practical Peripherals 14.4 @ 28,800 bps "In theory there is no difference between theory and practice." From ykang@tum.de Tue Aug 16 08:41:08 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!tum!ykang From: ykang@tum.de (Yuki Kang) Newsgroups: comp.sys.m68k Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Aug16.084108.8868@tum.de> Date: Tue, 16 Aug 1994 08:41:08 GMT References: <1994Aug13.074508.5022@rwth-aachen.de> <1994Aug13.231508.9962@cern.ch> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N Lines: 10 In article <1994Aug13.231508.9962@cern.ch>, hmuller@cern.ch (Heather Müller) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. > Unsubscribe me from this list! (Wait, this is Usenet, never mind). Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Yuki Kang Opinions expressed are solely my own and not those of Technische Universität München. ------------------------------------------------------------ From drobertson@uni-hamburg.de Tue Aug 16 22:36:08 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!uni-hamburg!drobertson From: drobertson@uni-hamburg.de (Dave Robertson) Newsgroups: comp.sys.m68k Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Aug16.223608.9139@uni-hamburg.de> Date: Tue, 16 Aug 1994 22:36:08 GMT References: <1994Aug13.074508.5022@rwth-aachen.de> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Aug13.074508.5022@rwth-aachen.de>, lcampbell@rwth-aachen.de (Liam Campbell) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Dave Robertson Practical Peripherals 14.4 @ 9600 Telebit bps "They will send a copy in my place."