linux-kernel - Re: 128 GiB memory question-- kernel only sees 64GiB?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 22 Jul 2008 16:28:03 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Justin Piszcz <jpiszcz@...idpixels.com>
Cc:	linux-kernel@...r.kernel.org, Alan Piszcz <ap@...arrain.com>
Subject: Re: 128 GiB memory question-- kernel only sees 64GiB?

On Tue, 2008-07-22 at 10:21 -0400, Justin Piszcz wrote:
> Hello,
> 
> To be able to utilize 128 GiB of memory on a host, does one need to enable 
> NUMA support? Currently only 64 GiB is showing up.
> 
> As far as machine name/motherboard type, I do not have this information 
> currently but I am told there are one or two of these boxes are running 
> CentOS 5.x and/or RHEL5/AS.

Sounds like you need to bug RH with that ;-)

> Is there something special you need to do to utilize all 128 GiB of 
> memory?

Does a recent kernel work for you? Also, you could at the very least
have mentioned your machine architecture; is it x86_64, ia64 or ppc64?

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/