Sorry. I need to retract my claim. There seems to be a 3G limit, even though the OS could handle nearly 8G. (I can have two simultaneous R processes each using near 3G.)
On another note, on our dual Opteron box R (compiled as 64-bit) could easily use nearly all the 16G in that box (that's one of the reason for having that box). Cheers, Andy > From: Paul Gilbert [mailto:[EMAIL PROTECTED] > > Liaw, Andy wrote: > > With a custom compiled kernel, I've run R processes that > used more than 5GB > > of RAM on a Linux box with 8GB RAM and dual Xeons. So it > seems to work on > > 32-bit Linux with big memory kernel. > > > > Andy > > I'm curious about this. I believe the address space limit of a 32-bit > processor is 4G, and I thought Xeons were 32-bit processors. > How can a > single process exceed the address space? > > Thanks, > Paul Gilbert > > > > > > > >>From: Duncan Murdoch [mailto:[EMAIL PROTECTED] > > > > [snip] > > > >>Normally the maximum memory allowed for any process in > >>Windows is 2 GB. It's possible to raise that to 3 GB but R > >>1.8 doesn't know how, so that's an absolute upper limit. > >>Version 1.9 may be able to go up to 3 GB, but beyond that > >>you'll probably need a 64 bit processor: as far as I know > >>all the 32 bit OS's limit each process to 2 or 3 GB, because > >>they reserve 1 or 2 GB for themselves. > >> > > > > [snip] > > > > > >>Duncan Murdoch > >> > >>______________________________________________ > >>[EMAIL PROTECTED] mailing list > >>https://www.stat.math.ethz.ch/mailman/listinfo> /r-help > >> > > > > > > ______________________________________________ > > [EMAIL PROTECTED] mailing list > > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > > > > ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
