From tperez@rwth-aachen.de Sun Jan 01 10:39:17 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!rwth-aachen!tperez From: tperez@rwth-aachen.de (Thiago Pérez) Newsgroups: comp.sys.m68k Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan01.103917.8249@rwth-aachen.de> Date: Sun, 01 Jan 1995 10:39:17 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N Lines: 11 Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Anyone running this on a Quadra 840AV with the 68040? -- Thiago Pérez Opinions expressed are solely my own and not those of RWTH Aachen Informatik. ------------------------------------------------------------ From mlarsson@clari.net Sun Jan 01 14:10:17 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!clari!mlarsson From: mlarsson@clari.net (Min-jun Larsson) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan01.141017.3703@clari.net> Date: Sun, 01 Jan 1995 14:10:17 GMT References: <1995Jan01.103917.8249@rwth-aachen.de> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jan01.103917.8249@rwth-aachen.de>, tperez@rwth-aachen.de (Thiago Pérez) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Min-jun Larsson -- ClariNet Communications Corp "Do not worship the copy." From ceriksson@unam.mx Mon Jan 02 23:32:17 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!unam!ceriksson From: ceriksson@unam.mx (Camila Eriksson) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan02.233217.2229@unam.mx> Date: Mon, 02 Jan 1995 23:32:17 GMT References: <1995Jan01.103917.8249@rwth-aachen.de> <1995Jan01.141017.3703@clari.net> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jan01.141017.3703@clari.net>, mlarsson@clari.net (Min-jun Larsson) 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. -- Camila Eriksson *PLONK* filter active for trolls. Amiga 3000T - NetBSD 1.0 From yduarte@rwth-aachen.de Tue Jan 03 11:54:17 1995 Path: ashpoly!cascade!bigsur!rwth-aachen!yduarte From: yduarte@rwth-aachen.de (Yuki Duarte) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jan03.115417.7443@rwth-aachen.de> Date: Tue, 03 Jan 1995 11:54:17 GMT References: <1995Jan01.103917.8249@rwth-aachen.de> <1995Jan01.141017.3703@clari.net> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Jan01.141017.3703@clari.net>, mlarsson@clari.net (Min-jun Larsson) 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. -- Yuki Duarte US Robotics Courier V.34 @ 9600 Telebit bps "A soul is not exclusive to biology."