From aweber@unam.mx Mon Aug 21 06:31:07 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!unam!aweber From: aweber@unam.mx (Astrid Weber) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug21.063107.4028@unam.mx> Date: Mon, 21 Aug 1995 06:31:07 GMT Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: TIN [version 1.2 PL2] Lines: 10 Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Astrid Weber -- Universidad Nacional Autónoma de México (DGSCA) "The hatch is open. Is anyone listening?" From akowalski@ox.ac.uk Tue Aug 22 01:08:07 1995 Path: ashpoly!cascade!brgate!saturno!ox!akowalski From: akowalski@ox.ac.uk (Anton Kowalski) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug22.010807.2819@ox.ac.uk> Date: Tue, 22 Aug 1995 01:08:07 GMT References: <1995Aug21.063107.4028@unam.mx> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Aug21.063107.4028@unam.mx>, aweber@unam.mx (Astrid Weber) 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. -- Anton Kowalski "5 sigma is a discovery. 7 is a question." Atari TT030 / SunOS 4.1.4 From ekarlsson@tum.de Tue Aug 22 19:05:07 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!tum!ekarlsson From: ekarlsson@tum.de (Elaine Karlsson) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug22.190507.1118@tum.de> Date: Tue, 22 Aug 1995 19:05:07 GMT References: <1995Aug21.063107.4028@unam.mx> <1995Aug22.010807.2819@ox.ac.uk> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Aug22.010807.2819@ox.ac.uk>, akowalski@ox.ac.uk (Anton Kowalski) 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. -- Elaine Karlsson "Do not worship the copy." Atari Falcon 030 / AmigaOS 3.1 From hmartinez@pipeline.com Thu Aug 24 13:38:07 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!pipeline!hmartinez From: hmartinez@pipeline.com (Heather Martínez) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug24.133807.5497@pipeline.com> Date: Thu, 24 Aug 1995 13:38:07 GMT References: <1995Aug21.063107.4028@unam.mx> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Aug21.063107.4028@unam.mx>, aweber@unam.mx (Astrid Weber) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Heather Martínez -- The Pipeline Internet Network "In theory there is no difference between theory and practice."