From livanov@hanse.de Sun Oct 06 01:47:03 1996 Path: ashpoly!cascade!transat!ukc!fennimore!hanse!livanov From: livanov@hanse.de (Lars Ivanov) Newsgroups: comp.sys.m68k Subject: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct06.014703.6756@hanse.de> Date: Sun, 06 Oct 1996 01:47:03 GMT Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Anyone running this on a Quadra 840AV with the 68040? -- Lars Ivanov *PLONK* filter active for trolls. PC-9821Ap2 (NEC) - NetBSD 1.0 From tsouza@u-tokyo.ac.jp Sun Oct 06 10:58:03 1996 Path: ashpoly!cascade!mxgate!coyoacan!u-tokyo!tsouza From: tsouza@u-tokyo.ac.jp (Takeshi Souza) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct06.105803.6719@u-tokyo.ac.jp> Date: Sun, 06 Oct 1996 10:58:03 GMT References: <1996Oct06.014703.6756@hanse.de> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1996Oct06.014703.6756@hanse.de>, livanov@hanse.de (Lars Ivanov) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. If you are posting from AOL, please read RFC 1036 before posting again. -- Takeshi Souza | tsouza@u-tokyo.ac.jp PGP Key fingerprint: 6671 F495 DDDC 84A6 "Keep the channels open." From gnakamura@inria.fr Mon Oct 07 10:28:03 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!inria!gnakamura From: gnakamura@inria.fr (Graham Nakamura) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct07.102803.5124@inria.fr> Date: Mon, 07 Oct 1996 10:28:03 GMT References: <1996Oct06.014703.6756@hanse.de> <1996Oct06.105803.6719@u-tokyo.ac.jp> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Oct06.105803.6719@u-tokyo.ac.jp>, tsouza@u-tokyo.ac.jp (Takeshi Souza) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. > If you are posting from AOL, please read RFC 1036 before posting again. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Graham Nakamura Tape trading list upon request. SASE required for international mail. From jsouza@mindspring.com Wed Oct 09 08:51:03 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!mindspring!jsouza From: jsouza@mindspring.com (Jen Souza) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct09.085103.7770@mindspring.com> Date: Wed, 09 Oct 1996 08:51:03 GMT References: <1996Oct06.014703.6756@hanse.de> <1996Oct06.105803.6719@u-tokyo.ac.jp> <1996Oct07.102803.5124@inria.fr> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Oct07.102803.5124@inria.fr>, gnakamura@inria.fr (Graham Nakamura) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Jen Souza *PLONK* filter active for trolls. Macintosh IIfx - NetBSD 1.0