From bpopov@utexas.edu Mon Dec 04 10:13:20 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!utexas!bpopov From: bpopov@utexas.edu (Bastien Popov) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec04.101320.1314@utexas.edu> Date: Mon, 04 Dec 1995 10:13:20 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: Netscape 1.1N Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Anyone running this on a Quadra 840AV with the 68040? -- Bastien Popov | bpopov@utexas.edu PGP Key fingerprint: 0658 B062 BD73 07EA "Keep the channels open." From mreyes@cmu.edu Mon Dec 04 17:32:20 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!cmu!mreyes From: mreyes@cmu.edu (Marta Reyes) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec04.173220.8867@cmu.edu> Date: Mon, 04 Dec 1995 17:32:20 GMT References: <1995Dec04.101320.1314@utexas.edu> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: Netscape 1.1N Lines: 8 In article <1995Dec04.101320.1314@utexas.edu>, bpopov@utexas.edu (Bastien Popov) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Marta Reyes -- Carnegie Mellon University School of CS "When every node is whole, the channel opens." From jpark@panix.com Tue Dec 05 23:02:20 1995 Path: ashpoly!cascade!mxgate!coyoacan!panix!jpark From: jpark@panix.com (Jens Park) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec05.230220.9800@panix.com> Date: Tue, 05 Dec 1995 23:02:20 GMT References: <1995Dec04.101320.1314@utexas.edu> <1995Dec04.173220.8867@cmu.edu> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1995Dec04.173220.8867@cmu.edu>, mreyes@cmu.edu (Marta Reyes) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Jens Park Tape trading list upon request. SASE required for international mail. From ekowalski@kth.se Thu Dec 07 11:56:20 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!kth!ekowalski From: ekowalski@kth.se (Emi Kowalski) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec07.115620.1446@kth.se> Date: Thu, 07 Dec 1995 11:56:20 GMT References: <1995Dec04.101320.1314@utexas.edu> <1995Dec04.173220.8867@cmu.edu> <1995Dec05.230220.9800@panix.com> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Dec05.230220.9800@panix.com>, jpark@panix.com (Jens Park) 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. -- Emi Kowalski | ekowalski@kth.se PGP Key fingerprint: 750B 858B 978D 40D1 "Keep the channels open." From slindqvist@demon.co.uk Fri Dec 08 02:42:20 1995 Path: ashpoly!cascade!brgate!saturno!demon!slindqvist From: slindqvist@demon.co.uk (Steve Lindqvist) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Dec08.024220.3037@demon.co.uk> Date: Fri, 08 Dec 1995 02:42:20 GMT References: <1995Dec04.101320.1314@utexas.edu> <1995Dec04.173220.8867@cmu.edu> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Dec04.173220.8867@cmu.edu>, mreyes@cmu.edu (Marta Reyes) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Steve Lindqvist "5 sigma is a discovery. 7 is a question." Decstation 5000/200 / TOS 4.04