Really? In fact I have a quadcore. But how can I know if Linux are really using only one core, and how can I setup it to use the 4cores?
Thanks a lot, milton On Mon, Jun 29, 2009 at 1:46 AM, Patrick Connolly < p_conno...@slingshot.co.nz> wrote: > On Fri, 26-Jun-2009 at 04:37PM -0400, milton ruser wrote: > > |> Hi there, > |> > > |> I have both systems on a DELL 64bit machine. > > |> I compiled R 2.9.0 on both systems, to get 64bits capability. > |> Surpriselly, on Linux (Ubuntu with I installed 3 month ago) I spent > |> 41s to run the same test you did, and less time (35s) under > |> Vista. In fact I had noticed that I not have gained time when > |> running under linux (I had done jobs that run for several > |> days). But somethings I gain with memory managment, because for > |> some programs or steps, windows say that memory is full, while > |> Linux run up to the end of the job. > > I think there's a simple explanation for both of those observations. > Your Windows installation is more than likely using both cores (or 4 > if you have a quad core) while your Linux is using only 1 of them. > > best > > -- > ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. > ___ Patrick Connolly > {~._.~} Great minds discuss ideas > _( Y )_ Average minds discuss events > (:_~*~_:) Small minds discuss people > (_)-(_) ..... Eleanor Roosevelt > > ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. > [[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.