On Thu, Feb 14, 2008 at 07:54:38AM -0800, Henrik Bengtsson wrote: > On Thu, Feb 14, 2008 at 7:23 AM, Jeffrey Horner > <[EMAIL PROTECTED]> wrote: > > Paul Gilbert wrote on 02/14/2008 09:14 AM: > > > > > > > > _ wrote: > > >> Hi all, > > >> Using big vectors (more than 4GB) is unfortunately not possible under > > >> Windows or other OS's if not enough RAM exists. > > > > > > This is NOT true. It is not limited by RAM, but rather by RAM and swap > > > space. With 500G hard disks at about $100, the more serious limitation > > > is a 32bit OS. Speed is a different consideration, but I doubt that > > > taking over what the OS is suppose to do will be the real answer. > > > > Umm... swap... yeah... My experience with any code that I write that > > needs to use swap is to reboot the machine and rewrite my code NOT to > > use swap. > > ...and the OS can never predict how you are going to access the data -
Actually that is not necessarily true. It might be worth looking for patterns in data (say memory pages) access and then create a smart OS which predicts the needed pages. Different programs would have different patterns, i guess. Ok, i might be dreaming. Gabor > as a developer you will always be able to write a much faster > file-based "database" compared with a generic swap that you have > little control over. > > /Henrik > -- Csardi Gabor <[EMAIL PROTECTED]> UNIL DGM ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
