From rsanchez@rwth-aachen.de Sat Apr 08 09:00:40 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!rwth-aachen!rsanchez From: rsanchez@rwth-aachen.de (Renata Sánchez) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Apr08.090040.1973@rwth-aachen.de> Date: Sat, 08 Apr 1995 09:00:40 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N 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. 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? -- Renata Sánchez "Measuring a record you own is listening, not piracy." Sun 3/60 (SunOS 4.1.1) / System 7.5.1 From jreyes@kth.se Sun Apr 09 08:51:40 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!kth!jreyes From: jreyes@kth.se (Jens Reyes) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Apr09.085140.7677@kth.se> Date: Sun, 09 Apr 1995 08:51:40 GMT References: <1995Apr08.090040.1973@rwth-aachen.de> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Apr08.090040.1973@rwth-aachen.de>, rsanchez@rwth-aachen.de (Renata Sánchez) 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. -- Jens Reyes | jreyes@kth.se PGP Key fingerprint: 3174 6D82 079E DEDE "Keep the channels open." From ksato@hanse.de Mon Apr 10 18:58:40 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!hanse!ksato From: ksato@hanse.de (Kirsty Sato) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Apr10.185840.5765@hanse.de> Date: Mon, 10 Apr 1995 18:58:40 GMT References: <1995Apr08.090040.1973@rwth-aachen.de> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Apr08.090040.1973@rwth-aachen.de>, rsanchez@rwth-aachen.de (Renata Sánchez) 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. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- === Kirsty Sato === Dept of Electrical Engineering, Hanse-Netzwerk Hamburg "A soul is not exclusive to biology." From glaurent@panix.com Wed Apr 12 04:54:40 1995 Path: ashpoly!cascade!transat!ukc!fennimore!panix!glaurent From: glaurent@panix.com (Göran Laurent) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Apr12.045440.9303@panix.com> Date: Wed, 12 Apr 1995 04:54:40 GMT References: <1995Apr08.090040.1973@rwth-aachen.de> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Apr08.090040.1973@rwth-aachen.de>, rsanchez@rwth-aachen.de (Renata Sánchez) 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. -- Göran Laurent "Do not worship the copy." Macintosh IIfx / TOS 4.04