From fokonkwo@mit.edu Mon Nov 04 20:00:34 1996 Path: ashpoly!cascade!mxgate!coyoacan!mit!fokonkwo From: fokonkwo@mit.edu (Fiona Okonkwo) Newsgroups: comp.sys.m68k Subject: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov04.200034.3208@mit.edu> Date: Mon, 04 Nov 1996 20:00:34 GMT Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: WinVN 0.99.5 Lines: 10 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. Anyone running this on a Quadra 840AV with the 68040? -- Fiona Okonkwo -- Massachusetts Institute of Technology "A soul is not exclusive to biology." From akowalski@uni-hamburg.de Wed Nov 06 13:48:34 1996 Path: ashpoly!cascade!mxgate!coyoacan!uni-hamburg!akowalski From: akowalski@uni-hamburg.de (Anton Kowalski) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov06.134834.2929@uni-hamburg.de> Date: Wed, 06 Nov 1996 13:48:34 GMT References: <1996Nov04.200034.3208@mit.edu> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Nov04.200034.3208@mit.edu>, fokonkwo@mit.edu (Fiona Okonkwo) 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. -- Anton Kowalski *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0 From rchoi@berkeley.edu Wed Nov 06 22:29:34 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!berkeley!rchoi From: rchoi@berkeley.edu (Raj Choi) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov06.222934.7423@berkeley.edu> Date: Wed, 06 Nov 1996 22:29:34 GMT References: <1996Nov04.200034.3208@mit.edu> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Nov04.200034.3208@mit.edu>, fokonkwo@mit.edu (Fiona Okonkwo) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Raj Choi *PLONK* filter active for trolls. Acorn RiscPC 600 - NetBSD 1.0 From gkarlsson@purdue.edu Fri Nov 08 05:31:34 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!purdue!gkarlsson From: gkarlsson@purdue.edu (Graham Karlsson) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov08.053134.1593@purdue.edu> Date: Fri, 08 Nov 1996 05:31:34 GMT References: <1996Nov04.200034.3208@mit.edu> <1996Nov06.134834.2929@uni-hamburg.de> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: Netscape 1.1N Lines: 11 In article <1996Nov06.134834.2929@uni-hamburg.de>, akowalski@uni-hamburg.de (Anton 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. Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Graham Karlsson Practical Peripherals 14.4 @ 19,200 bps "Tape doesn't lie at 02:14. Ears do."