From meriksson@mit.edu Sun Oct 06 21:53:44 1996 Path: ashpoly!cascade!bigsur!mit!meriksson From: meriksson@mit.edu (Matthias Eriksson) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct06.215344.9516@mit.edu> Date: Sun, 06 Oct 1996 21:53:44 GMT Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. 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? -- Matthias Eriksson *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0 From jmartinez@uni-hamburg.de Mon Oct 07 08:21:44 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!uni-hamburg!jmartinez From: jmartinez@uni-hamburg.de (Julien Martínez) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct07.082144.2310@uni-hamburg.de> Date: Mon, 07 Oct 1996 08:21:44 GMT References: <1996Oct06.215344.9516@mit.edu> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Oct06.215344.9516@mit.edu>, meriksson@mit.edu (Matthias Eriksson) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Julien Martínez -- Universität Hamburg Fachbereich Informatik "Marcus is not one man."