From gchoi@clari.net Fri Nov 10 00:49:57 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!clari!gchoi From: gchoi@clari.net (Graham Choi) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov10.004957.9459@clari.net> Date: Fri, 10 Nov 1995 00:49:57 GMT Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net 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. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- === Graham Choi === Dept of Electrical Engineering, ClariNet Communications Corp "Hold for relay." From jreyes@berkeley.edu Sat Nov 11 22:32:57 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!berkeley!jreyes From: jreyes@berkeley.edu (Jens Reyes) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov11.223257.3742@berkeley.edu> Date: Sat, 11 Nov 1995 22:32:57 GMT References: <1995Nov10.004957.9459@clari.net> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Nov10.004957.9459@clari.net>, gchoi@clari.net (Graham Choi) writes: > 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. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Jens Reyes *PLONK* filter active for trolls. Decstation 5000/200 - NetBSD 1.0 From tcampbell@rwth-aachen.de Mon Nov 13 21:51:57 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!rwth-aachen!tcampbell From: tcampbell@rwth-aachen.de (Tobias Campbell) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov13.215157.4572@rwth-aachen.de> Date: Mon, 13 Nov 1995 21:51:57 GMT References: <1995Nov10.004957.9459@clari.net> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Nov10.004957.9459@clari.net>, gchoi@clari.net (Graham Choi) 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. -- === Tobias Campbell === Dept of Electrical Engineering, RWTH Aachen Informatik "A soul is not exclusive to biology." From akim@uni-hamburg.de Wed Nov 15 10:20:57 1995 Path: ashpoly!cascade!bigsur!uni-hamburg!akim From: akim@uni-hamburg.de (Anton Kim) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov15.102057.9450@uni-hamburg.de> Date: Wed, 15 Nov 1995 10:20:57 GMT References: <1995Nov10.004957.9459@clari.net> <1995Nov13.215157.4572@rwth-aachen.de> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Nov13.215157.4572@rwth-aachen.de>, tcampbell@rwth-aachen.de (Tobias Campbell) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Anton Kim | akim@uni-hamburg.de PGP Key fingerprint: 09EF C1FC B765 ABD8 "Keep the channels open."