ricardo souza <[email protected]> writes: > The only thing that is very strange for me is how the performance of > MAC is much better to allocate memory than linux and windows both > 32bit.
As far as I understand it, this is not true. Windows places more restrictions on memory use than Linux, but I don't know about Macs. > I am using a OS linux 32 with a windows partition. I believe that is > the problem. I disagree. The windows partition has no effect on how much memory is available, and I can use more than 2GB of RAM in R on Debian here. If what you mean to say is you can complete an analysis in Windows but not in Linux on the same machine, then you may have the wrong kernel installed for Linux. > R just understand that I have 2Gb of Ram, although I have 4 Gb > available. Is that true? Somebody else have this problem before? > It is possible that you are using a kernel that doesn't use all of your memory. You can check how much memory the system can use by running the command 'top' from the command line. Towards the top of the screen you'll see an entry Mem: NNNNNNNN total. If NNNNNNN isn't close to the number you expect (i.e., 4GB or approx. 4000000 kb), then you need a different kernel. This was an issue for me with Debian testing and the 486 kernels a year or two back. I think the 686 kernels all recognize 4GB of RAM now. I'm using 2.6.32-5-686 here and I have access to 3GB of RAM. For 4GB you might need the 686-bigmem kernel. All are available through your package manager. HTH, Tyler ps, just noticed that this was cross-posted to r.geo. I don't follow that list, but OS-specific questions like this are almost certainly off-topic there. _______________________________________________ R-SIG-Debian mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-debian
