[Beowulf] bizarre scaling behavior on a Nehalem
rpnabar at gmail.com
Wed Aug 12 13:58:38 EDT 2009
On Wed, Aug 12, 2009 at 10:14 AM, Mikhail Kuzminsky<kus at free.net> wrote:
> As I mentioned here in "numactl&SuSE11.1' thread, on some kernels there is
> wrong behaviour for Nehalem (bad /sys/devices/system/node directory
> content). This bug is presented, in particular, in default OpenSuSE 11
> kernels (188.8.131.52-9 and 2.6.29-6), and (as it was writted in the
> corresponding thread discussion) in FC11 2.6.29 kernel.
Is there a way to check if I have this bug?
Don't know what exactly is "bad content" in here. I'll see if I can
find a bug report online.
> It's interesting, do somebody have "normally working" w/Nehalem - in the
> sense of NUMA - kernels ? AFAIK more old 2.6 kernels (from SuSE 10.3) works
> OK, but I didn't check. May be error in NUMA support is the reason of Rahul
> problem ?
Any way to test? Are there any NUMA support tests or benchmarks?
Beowulf mailing list, Beowulf at beowulf.org sponsored by Penguin Computing
To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
More information about the Beowulf