http://www.cybaea.net/Blogs/Faster-R-through-better-BLAS.html any help? On Mar 16, 2014 9:38 PM, "Russell Bainer" <russ.bai...@gmail.com> wrote:
> Thanks guys. I'll look into this and tell you if I come up with anything. > > -R > > > On Saturday, March 15, 2014, Jeff Newmiller <jdnew...@dcn.davis.ca.us> > wrote: > > > Comparing with an unspecified benchmark makes answering this too hard. > > Following instructions in the Posting Guide will lead to more accurate Q > > and A. > > > > Note that you may not need to compile if you have not as yet followed the > > recommendations: http://cran.r-project.org/bin/linux/ubuntu/README. > There > > are apparently compile-time options that can obtain noticeable > improvements > > for certain classes of problems, but if you and your friend are both > using > > standard installs that seems unlikely to explain the difference. I have > not > > needed a custom compile (yet?). > > > --------------------------------------------------------------------------- > > Jeff Newmiller The ..... ..... Go > Live... > > DCN:<jdnew...@dcn.davis.ca.us <javascript:;>> Basics: ##.#. > > ##.#. Live Go... > > Live: OO#.. Dead: OO#.. Playing > > Research Engineer (Solar/Batteries O.O#. #.O#. with > > /Software/Embedded Controllers) .OO#. .OO#. > rocks...1k > > > --------------------------------------------------------------------------- > > Sent from my phone. Please excuse my brevity. > > > > On March 15, 2014 3:46:57 AM PDT, Augusto Cesar <augusto.ce...@gmail.com > <javascript:;>> > > wrote: > > >My guess is that maybe the default Ubuntu binaries aren't compiled > > >with MKL (Math Kernel Library) support and thus with no > > >multithreading. > > > > > >I would suggest doing a quick research on how to re-compile R with MKL > > >support and maybe you'll be good to go. > > > > > >On Fri, Mar 14, 2014 at 9:45 PM, Russell Bainer <russ.bai...@gmail.com > <javascript:;> > > > > > >wrote: > > >> Hi All, > > >> > > >> I've run across an odd phenomenon and I am wondering if someone might > > >be > > >> able to provide insight as to what is going on. I'm running some R > > >code > > >> that was provided by a collaborator, who is not a very experienced R > > >> programmer (e.g., the code is functional but not very efficient). > > >When I > > >> run it from the terminal or command line everything executes, albeit > > >very > > >> slowly- the logfile suggests that the program is about 5% done after > > >> running over last weekend. Top indicates that it is maxing out one of > > >my > > >> CPUs and chewing up a lot of memory, which I expect. > > >> > > >> The strange thing is that my collaborator insists that the code > > >executes > > >> on the order of minutes on his 2012 macbook pro with 8G of memory. I > > >am > > >> running it with ubuntu 12.04 on a dual-core i7 with 32G, and it's > > >slow as > > >> molasses. That suggests a configuration issue of some kind with R > > >that I > > >> might not be aware of (I am more experienced in R and usually don't > > >write > > >> code that requires resources like that). I have played with my > > >swappiness > > >> and the effect seems to be minimal. Can anyone suggest something else > > >that > > >> could be going on? I have considered trying to run it directly on a > > >unix > > >> server, but the code has a lot of third-party dependencies that would > > >be a > > >> bit of work to set up for simple troubleshooting. And naturally I'd > > >prefer > > >> that R be configured correctly in the event that I need to locally > > >run > > >> something more intense in the future. > > >> > > >> Thanks in advance for any advice you can give. This message has been > > >> cross-posted omn the ubuntu forums. > > >> > > >> -R > > >> > > >> [[alternative HTML version deleted]] > > >> > > >> ______________________________________________ > > >> R-help@r-project.org <javascript:;> mailing list > > >> https://stat.ethz.ch/mailman/listinfo/r-help > > >> PLEASE do read the posting guide > > >http://www.R-project.org/posting-guide.html > > >> and provide commented, minimal, self-contained, reproducible code. > > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
