On Thu, 27 Oct 2005 at 2:17pm, Johnny Hughes wrote > On Thu, 2005-10-27 at 12:07 -0700, Sivakumar Raju wrote: >> 2. Can a single process use more than 32 Gbytes of RAM in CentOS >> 3.5 ? > > no idea about that According to <http://www.redhat.com/en_us/USA/rhel/details/limits/>, RHEL3's max memory on i386 and x86_64 is 64GB. On x86_64, I don't know of anything limiting a process to using as much of that as it can get (that doesn't mean that there isn't a limit, but I don't know that there is). On i386, of course, you'll get only ~4GB/process. And if you're running x86_64, I'd strongly recommend centos 4 (which has the same limits). -- Joshua Baker-LePain Department of Biomedical Engineering Duke University