From mmuller@purdue.edu Wed Apr 06 13:16:50 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!purdue!mmuller From: mmuller@purdue.edu (Mathieu Müller) Newsgroups: comp.sys.m68k Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Apr06.131650.1138@purdue.edu> Date: Wed, 06 Apr 1994 13:16:50 GMT Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- === Mathieu Müller === Dept of Electrical Engineering, Purdue University Engineering Computer Network "Extraordinary claims require extraordinary spectra." From asouza@berkeley.edu Wed Apr 06 15:37:50 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!berkeley!asouza From: asouza@berkeley.edu (Anton Souza) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Apr06.153750.6386@berkeley.edu> Date: Wed, 06 Apr 1994 15:37:50 GMT References: <1994Apr06.131650.1138@purdue.edu> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Apr06.131650.1138@purdue.edu>, mmuller@purdue.edu (Mathieu Müller) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? > By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Anton Souza *PLONK* filter active for trolls. 486DX2/66 (Linux 1.2.13) - NetBSD 1.0 From brobertson@earthlink.net Fri Apr 08 00:18:50 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!earthlink!brobertson From: brobertson@earthlink.net (Bill Robertson) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Apr08.001850.3548@earthlink.net> Date: Fri, 08 Apr 1994 00:18:50 GMT References: <1994Apr06.131650.1138@purdue.edu> <1994Apr06.153750.6386@berkeley.edu> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Apr06.153750.6386@berkeley.edu>, asouza@berkeley.edu (Anton Souza) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Bill Robertson | brobertson@earthlink.net PGP Key fingerprint: 6B3B 9638 773F F80E "Keep the channels open." From rbrennan@cam.ac.uk Sat Apr 09 23:57:50 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!cam!rbrennan From: rbrennan@cam.ac.uk (Rodrigo Brennan) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Apr09.235750.3873@cam.ac.uk> Date: Sat, 09 Apr 1994 23:57:50 GMT References: <1994Apr06.131650.1138@purdue.edu> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Apr06.131650.1138@purdue.edu>, mmuller@purdue.edu (Mathieu Müller) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Rodrigo Brennan "A soul is not exclusive to biology." Mac IIci / 68882 FPU / System 7.5.1 From mrodriguez@mit.edu Mon Apr 11 20:43:50 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!mit!mrodriguez From: mrodriguez@mit.edu (Mateo Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Apr11.204350.8441@mit.edu> Date: Mon, 11 Apr 1994 20:43:50 GMT References: <1994Apr06.131650.1138@purdue.edu> <1994Apr06.153750.6386@berkeley.edu> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Apr06.153750.6386@berkeley.edu>, asouza@berkeley.edu (Anton Souza) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Mateo Rodríguez "When every node is whole, the channel opens." Mac IIci / 68882 FPU / SunOS 4.1.4