From nsmirnov@pipeline.com Fri Aug 25 17:20:11 1995 Path: ashpoly!cascade!transat!ukc!fennimore!pipeline!nsmirnov From: nsmirnov@pipeline.com (Nadine Smirnov) Newsgroups: comp.sys.m68k Subject: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug25.172011.2884@pipeline.com> Date: Fri, 25 Aug 1995 17:20:11 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com 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? -- Nadine Smirnov | nsmirnov@pipeline.com PGP Key fingerprint: 3C51 A465 02D5 DCBD "Keep the channels open." From mvasiliev@kiae.su Sat Aug 26 09:07:11 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!kiae!mvasiliev From: mvasiliev@kiae.su (Matthias Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug26.090711.7448@kiae.su> Date: Sat, 26 Aug 1995 09:07:11 GMT References: <1995Aug25.172011.2884@pipeline.com> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Aug25.172011.2884@pipeline.com>, nsmirnov@pipeline.com (Nadine Smirnov) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- === Matthias Vasiliev === Dept of Electrical Engineering, Kurchatov Institute of Atomic Energy, Moscow "Row 14. No joke." From shughes@delphi.com Sat Aug 26 10:44:11 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!delphi!shughes From: shughes@delphi.com (Seo-yeon Hughes) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug26.104411.5339@delphi.com> Date: Sat, 26 Aug 1995 10:44:11 GMT References: <1995Aug25.172011.2884@pipeline.com> <1995Aug26.090711.7448@kiae.su> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Aug26.090711.7448@kiae.su>, mvasiliev@kiae.su (Matthias Vasiliev) 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. If you are posting from AOL, please read RFC 1036 before posting again. -- Seo-yeon Hughes *PLONK* filter active for trolls. PC-9821Ap2 (NEC) - NetBSD 1.0