From eduarte@unam.mx Wed Oct 02 06:32:55 1996 Path: ashpoly!cascade!mxgate!coyoacan!unam!eduarte From: eduarte@unam.mx (Emi Duarte) Newsgroups: comp.sys.m68k Subject: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct02.063255.9789@unam.mx> Date: Wed, 02 Oct 1996 06:32:55 GMT Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: NewsWatcher 2.0b24 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. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Emi Duarte -- Universidad Nacional Autónoma de México (DGSCA) "Hardware is temporary. The signal survives." From kreyes@delphi.com Fri Oct 04 08:33:55 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!delphi!kreyes From: kreyes@delphi.com (Karen Reyes) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct04.083355.8194@delphi.com> Date: Fri, 04 Oct 1996 08:33:55 GMT References: <1996Oct02.063255.9789@unam.mx> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: Netscape 1.1N Lines: 8 In article <1996Oct02.063255.9789@unam.mx>, eduarte@unam.mx (Emi Duarte) 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. -- Karen Reyes -- Delphi Internet Services "Hardware is temporary. The signal survives." From vsato@pipeline.com Fri Oct 04 23:04:55 1996 Path: ashpoly!cascade!bigsur!pipeline!vsato From: vsato@pipeline.com (Valeria Sato) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct04.230455.8765@pipeline.com> Date: Fri, 04 Oct 1996 23:04:55 GMT References: <1996Oct02.063255.9789@unam.mx> <1996Oct04.083355.8194@delphi.com> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1996Oct04.083355.8194@delphi.com>, kreyes@delphi.com (Karen Reyes) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Valeria Sato Tape trading list upon request. SASE required for international mail. From blarsson@u-tokyo.ac.jp Sat Oct 05 01:22:55 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!u-tokyo!blarsson From: blarsson@u-tokyo.ac.jp (Bill Larsson) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct05.012255.5149@u-tokyo.ac.jp> Date: Sat, 05 Oct 1996 01:22:55 GMT References: <1996Oct02.063255.9789@unam.mx> <1996Oct04.083355.8194@delphi.com> <1996Oct04.230455.8765@pipeline.com> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Oct04.230455.8765@pipeline.com>, vsato@pipeline.com (Valeria Sato) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Bill Larsson | blarsson@u-tokyo.ac.jp PGP Key fingerprint: 1FF2 E20F 82B0 CD58 "Keep the channels open." From tkarlsson@pipeline.com Sat Oct 05 08:24:55 1996 Path: ashpoly!cascade!transat!ukc!fennimore!pipeline!tkarlsson From: tkarlsson@pipeline.com (Tobias Karlsson) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct05.082455.2794@pipeline.com> Date: Sat, 05 Oct 1996 08:24:55 GMT References: <1996Oct02.063255.9789@unam.mx> <1996Oct04.083355.8194@delphi.com> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Oct04.083355.8194@delphi.com>, kreyes@delphi.com (Karen Reyes) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Tobias Karlsson *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0