From tsokolov@unam.mx Thu Jul 25 16:28:41 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!unam!tsokolov From: tsokolov@unam.mx (Thiago Sokolov) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul25.162841.7485@unam.mx> Date: Thu, 25 Jul 1996 16:28:41 GMT Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: TIN [version 1.2 PL2] 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. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Thiago Sokolov "We don't sign stars. We build them." Atari TT030 / SunOS 4.1.4 From jokonkwo@inria.fr Fri Jul 26 05:23:41 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!inria!jokonkwo From: jokonkwo@inria.fr (Jen Okonkwo) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul26.052341.2576@inria.fr> Date: Fri, 26 Jul 1996 05:23:41 GMT References: <1996Jul25.162841.7485@unam.mx> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: Netscape 1.1N Lines: 10 In article <1996Jul25.162841.7485@unam.mx>, tsokolov@unam.mx (Thiago Sokolov) 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. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- === Jen Okonkwo === Dept of Electrical Engineering, INRIA Rocquencourt "We don't sign stars. We build them." From cpetrov@illinois.edu Fri Jul 26 06:53:41 1996 Path: ashpoly!cascade!brgate!saturno!illinois!cpetrov From: cpetrov@illinois.edu (Callum Petrov) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul26.065341.6363@illinois.edu> Date: Fri, 26 Jul 1996 06:53:41 GMT References: <1996Jul25.162841.7485@unam.mx> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Jul25.162841.7485@unam.mx>, tsokolov@unam.mx (Thiago Sokolov) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- === Callum Petrov === Dept of Electrical Engineering, University of Illinois Urbana-Champaign "A soul is not exclusive to biology." From bmoreno@tum.de Fri Jul 26 22:43:41 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!tum!bmoreno From: bmoreno@tum.de (Brian Moreno) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul26.224341.5360@tum.de> Date: Fri, 26 Jul 1996 22:43:41 GMT References: <1996Jul25.162841.7485@unam.mx> <1996Jul26.052341.2576@inria.fr> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Jul26.052341.2576@inria.fr>, jokonkwo@inria.fr (Jen Okonkwo) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Brian Moreno | bmoreno@tum.de PGP Key fingerprint: 6154 821D DAF2 CE95 "Keep the channels open." From isilva@inria.fr Sun Jul 28 07:29:41 1996 Path: ashpoly!cascade!mxgate!coyoacan!inria!isilva From: isilva@inria.fr (Ines Silva) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul28.072941.7424@inria.fr> Date: Sun, 28 Jul 1996 07:29:41 GMT References: <1996Jul25.162841.7485@unam.mx> <1996Jul26.052341.2576@inria.fr> <1996Jul26.224341.5360@tum.de> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1996Jul26.224341.5360@tum.de>, bmoreno@tum.de (Brian Moreno) 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. -- Ines Silva -- INRIA Rocquencourt "Row 14. No joke."