In article , Linuz wrote:
> I thought that AMD64 and EM64T offered >4GB addressing.
> However, redhat's configuration homepage shows otherwise:
>
> http://www.redhat.com/software/rhel/configuration
>
>
> ES system limits (all architectures) RHEL2.1 RHEL3 RHEL4
> Maximum physical CPUs 2 2 2
> Maximum memory 4GB 8GB 16GB
>
> Does this mean a process/job under RHEL3 (for AMD64), can
> only address a maximum of 8GB of RAM?!?
>
> Will the O/S even recognize/use more than that amount?

That's one heckuva confusing page. If you look lower, they have
a section on "Maximum configurations", where the max memory for AMD64/EM64T
is listed as 64GB. I think perhaps they're saying you have to buy the
AS version to get support for configurations "bigger" than those you quoted.

--
Joshua Baker-LePain
Department of Biomedical Engineering
Duke University