newbie requests advice.
lindahl at conservativecomputer.com
Tue Jun 19 10:26:32 PDT 2001
On Tue, Jun 19, 2001 at 09:34:56AM -0700, Adam Shand wrote:
> and is the limit with linux 2.4 3gb or 4gb of memory per process. i've
> had different people say directly conflicting stuff to me in personal
> email from posts to this list (which was my general experience trying to
> figure this out on the web as well).
You can address 4 GB with 32-bit pointers. However, Linux (or any OS)
has to put stuff in particular places in that 4 GB virtual space in
every process -- like shared libraries, signal trampolines, etc -- so
that reduces the actual usable space that a process can use. In some
OSes like VMS, it's cut in half. It was my impression that the scheme
used by Linux on the x86 is fairly efficient.
More information about the Beowulf