The benchmark report is good stuff - I've been wondering about these speed issues recently myself.
Has anyone tried something similar on 64-bit Linux or other OS? I'm contemplating switching to 64-bit Linux if I'll get some dramatic cycle time improvements. Anyone have any experience with this? Best, John -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Liaw, Andy Sent: Friday, June 02, 2006 10:01 AM To: ivo welch; [email protected] Subject: Re: [R] speed? You (and your colleague) might want to have a look at http://www.sciviews.org/benchmark/. It's a bit dated, but still may be a good starting point. Some months ago some one asked about working on getting R to use the GPU for computation on the R-devel list. Don't know if anything came of it. Cheers, Andy From: ivo welch > > dear R wizards: > > while extolling the virtues of R, one of my young > econometrics colleagues told me that he still wants to run ox > because [a] his code is written in it (good reason); [b] > because ox seems to be faster than R in most benchmarks (huh?). > > this got me to wonder. language speed can't matter much, so > it must be mostly the underlying matrix algebra by now. I > presume that nowadays most of the plain matrix operation > speed depends primarily on which hardware features the > library accesses. (The basic algorithms aren't so different, > so even though the algorithm may have mattered a long time > ago, they are probably pretty similar nowadays. hmmm...maybe > matrix inversion still is different, but multiplication and > adding should not be.) > > On x86 architecture, I believe there is a hierarchy in terms > of raw processing power: FPU < SSE* < GPU. > > is it even possible to use the GPU now for math processing > (linux or windows), and specifically in R? > > assuming I compile everything with the proper SSE flags and atlas, is > SSE* fully taken advantage of? > > regards, > > /ivo > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > > ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
