64-bit for redhat EL, please give advice

[Northrup, Wilson]

IIRC, you're looking for "long mode" so ... "lm"
 

-----Original Message-----
From: redhat-list-bounces at redhat.com [mailto:redhat-list-bounces at redhat.com]
On Behalf Of Ed Wilts
Sent: Monday, May 15, 2006 12:52 PM
To: General Red Hat Linux discussion list
Subject: Re: 64-bit for redhat EL, please give advice

On Mon, May 15, 2006 at 12:15:02PM -0400, Northrup, Wilson wrote:
> "64-bit Intel(r) Xeon(tm) processors supporting 64-bit extension and
64-bit
> Microsoft Windows and Linux operating systems"
> 
> Please note that the DL360 has been using Intel Xeon DP processors which
> support Intel's EM64T extensions for quite some time now. This is not a
> recent development.  The DL380 mentioned elsewhere in this thread also
uses
> the same processors.  We have a few hundred of each.   

Learn something new every day...

So since we're on a Linux list, which cpu flags tell you that it's the
64-bit CPU in there?  I know we've got a bunch of recent DL380 systems
installed and I'm wondering if they should have the 64-bit distros
installed.

> Since there are also some comments about Opteron, I will tell you that the
> DL385 _Opteron_ based system _blows_the_doors_off_ the DL360/DL380 Xeon's
> for very high percentage of our apps in both short and long modes (32 or
> 64bit modes that is...)   There are a few apps we have where the Opterons
> are not faster or optimal for what we do, but there are not many.

We're buying the new DL385 systems now.  You're right - they fly.  Even
for Windows :-)

Thanks,
        .../Ed
-- 
Ed Wilts, RHCE
Mounds View, MN, USA
mailto:ewilts at ewilts.org
Member #1, Red Hat Community Ambassador Program

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