From vvasiliev@unam.mx Wed Apr 13 18:23:12 1994 Path: ashpoly!cascade!brgate!saturno!unam!vvasiliev From: vvasiliev@unam.mx (Valeria Vasiliev) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Apr13.182312.9890@unam.mx> Date: Wed, 13 Apr 1994 18:23:12 GMT Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Valeria Vasiliev US Robotics Courier V.34 @ ISDN 64k bps "Marcus is not one man." From gdubois@mit.edu Thu Apr 14 05:31:12 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!mit!gdubois From: gdubois@mit.edu (Graham Dubois) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Apr14.053112.2925@mit.edu> Date: Thu, 14 Apr 1994 05:31:12 GMT References: <1994Apr13.182312.9890@unam.mx> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Apr13.182312.9890@unam.mx>, vvasiliev@unam.mx (Valeria Vasiliev) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? > Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Graham Dubois Zyxel U-1496E @ 19,200 bps "Tape doesn't lie at 02:14. Ears do." From klee@titech.ac.jp Thu Apr 14 19:03:12 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!titech!klee From: klee@titech.ac.jp (Katrin Lee) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Apr14.190312.9026@titech.ac.jp> Date: Thu, 14 Apr 1994 19:03:12 GMT References: <1994Apr13.182312.9890@unam.mx> <1994Apr14.053112.2925@mit.edu> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1994Apr14.053112.2925@mit.edu>, gdubois@mit.edu (Graham Dubois) 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. -- Katrin Lee -- Tokyo Institute of Technology Computer Centre "Extraordinary claims require extraordinary spectra."