From nrodriguez@rwth-aachen.de Thu Jul 27 09:49:18 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!rwth-aachen!nrodriguez From: nrodriguez@rwth-aachen.de (Nadia Rodríguez) Newsgroups: comp.sys.m68k Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jul27.094918.9048@rwth-aachen.de> Date: Thu, 27 Jul 1995 09:49:18 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Nadia Rodríguez *PLONK* filter active for trolls. Decstation 5000/200 - NetBSD 1.0 From pduarte@netcom.com Thu Jul 27 17:54:18 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!netcom!pduarte From: pduarte@netcom.com (Pavel Duarte) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jul27.175418.6343@netcom.com> Date: Thu, 27 Jul 1995 17:54:18 GMT References: <1995Jul27.094918.9048@rwth-aachen.de> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Jul27.094918.9048@rwth-aachen.de>, nrodriguez@rwth-aachen.de (Nadia 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. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Pavel Duarte *PLONK* filter active for trolls. Acorn RiscPC 600 - NetBSD 1.0 From jrobertson@stanford.edu Thu Jul 27 22:35:18 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!stanford!jrobertson From: jrobertson@stanford.edu (Joachim Robertson) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jul27.223518.3440@stanford.edu> Date: Thu, 27 Jul 1995 22:35:18 GMT References: <1995Jul27.094918.9048@rwth-aachen.de> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Jul27.094918.9048@rwth-aachen.de>, nrodriguez@rwth-aachen.de (Nadia Rodríguez) 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. -- === Joachim Robertson === Dept of Electrical Engineering, Stanford University Computer Systems Lab "Hardware is temporary. The signal survives."