From kito@utexas.edu Sat Oct 15 11:43:05 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!utexas!kito From: kito@utexas.edu (Kenji Ito) Newsgroups: comp.sys.m68k Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Oct15.114305.3964@utexas.edu> Date: Sat, 15 Oct 1994 11:43:05 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. 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? -- Kenji Ito "Measuring a record you own is listening, not piracy." Acorn RiscPC 600 / TOS 4.04 From bkowalski@tum.de Mon Oct 17 10:45:05 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!tum!bkowalski From: bkowalski@tum.de (Bill Kowalski) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Oct17.104505.6599@tum.de> Date: Mon, 17 Oct 1994 10:45:05 GMT References: <1994Oct15.114305.3964@utexas.edu> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N Lines: 10 In article <1994Oct15.114305.3964@utexas.edu>, kito@utexas.edu (Kenji Ito) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Bill Kowalski Opinions expressed are solely my own and not those of Technische Universität München. ------------------------------------------------------------ From tmoreno@uni-hamburg.de Wed Oct 19 02:20:05 1994 Path: ashpoly!cascade!brgate!saturno!uni-hamburg!tmoreno From: tmoreno@uni-hamburg.de (Tyler Moreno) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Oct19.022005.1487@uni-hamburg.de> Date: Wed, 19 Oct 1994 02:20:05 GMT References: <1994Oct15.114305.3964@utexas.edu> <1994Oct17.104505.6599@tum.de> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1994Oct17.104505.6599@tum.de>, bkowalski@tum.de (Bill Kowalski) 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. -- Tyler Moreno -- Universität Hamburg Fachbereich Informatik "We don't sign stars. We build them." From shernandez@kth.se Thu Oct 20 21:01:05 1994 Path: ashpoly!cascade!brgate!saturno!kth!shernandez From: shernandez@kth.se (Sergei Hernández) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Oct20.210105.3074@kth.se> Date: Thu, 20 Oct 1994 21:01:05 GMT References: <1994Oct15.114305.3964@utexas.edu> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: Netscape 1.1N Lines: 10 In article <1994Oct15.114305.3964@utexas.edu>, kito@utexas.edu (Kenji Ito) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Sergei Hernández "There are 14 nodes and only 10 countries. Count again." Sun 3/60 (SunOS 4.1.1) / TOS 4.04