From ahernandez@pipeline.com Fri May 06 19:39:05 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!pipeline!ahernandez From: ahernandez@pipeline.com (Astrid Hernández) Newsgroups: comp.sys.m68k Subject: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994May06.193905.2746@pipeline.com> Date: Fri, 06 May 1994 19:39:05 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com 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. -- Astrid Hernández | ahernandez@pipeline.com PGP Key fingerprint: CDAE B261 9BE5 8805 "Keep the channels open." From akowalski@uni-hamburg.de Fri May 06 23:37:05 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uni-hamburg!akowalski From: akowalski@uni-hamburg.de (Amy Kowalski) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994May06.233705.3369@uni-hamburg.de> Date: Fri, 06 May 1994 23:37:05 GMT References: <1994May06.193905.2746@pipeline.com> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994May06.193905.2746@pipeline.com>, ahernandez@pipeline.com (Astrid Hernández) 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. -- Amy Kowalski US Robotics Courier V.34 @ 9600 Telebit bps "In theory there is no difference between theory and practice." From mfournier@ox.ac.uk Sat May 07 13:55:05 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!ox!mfournier From: mfournier@ox.ac.uk (Mathieu Fournier) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994May07.135505.6409@ox.ac.uk> Date: Sat, 07 May 1994 13:55:05 GMT References: <1994May06.193905.2746@pipeline.com> <1994May06.233705.3369@uni-hamburg.de> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: Netscape 1.1N Lines: 9 In article <1994May06.233705.3369@uni-hamburg.de>, akowalski@uni-hamburg.de (Amy Kowalski) 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. -- Mathieu Fournier | mfournier@ox.ac.uk PGP Key fingerprint: 2149 81C4 A889 481A "Keep the channels open." From cschneider@rwth-aachen.de Sun May 08 22:19:05 1994 Path: ashpoly!cascade!brgate!saturno!rwth-aachen!cschneider From: cschneider@rwth-aachen.de (Camila Schneider) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994May08.221905.8307@rwth-aachen.de> Date: Sun, 08 May 1994 22:19:05 GMT References: <1994May06.193905.2746@pipeline.com> <1994May06.233705.3369@uni-hamburg.de> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1994May06.233705.3369@uni-hamburg.de>, akowalski@uni-hamburg.de (Amy Kowalski) 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. -- Camila Schneider *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0 From tsilva@utexas.edu Tue May 10 17:39:05 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!utexas!tsilva From: tsilva@utexas.edu (Takeshi Silva) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994May10.173905.9861@utexas.edu> Date: Tue, 10 May 1994 17:39:05 GMT References: <1994May06.193905.2746@pipeline.com> <1994May06.233705.3369@uni-hamburg.de> <1994May07.135505.6409@ox.ac.uk> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994May07.135505.6409@ox.ac.uk>, mfournier@ox.ac.uk (Mathieu Fournier) 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. -- Takeshi Silva "Hardware is temporary. The signal survives." Commodore Amiga 500 (1MB OCS) / System 7.5.1