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Re: [Xen-devel] Re: Using Xen Virtualization Environment for Development and Testing of Supercomputing and High Performance Computing (HPC) Cluster MPICH2 MPI-2 Applications
On Fri, Oct 30, 2009 at 08:22:11AM -0700, Jeremy Fitzhardinge wrote:
> On 10/30/09 02:49, Pasi Kärkkäinen wrote:
> > On Fri, Oct 30, 2009 at 04:35:00PM +0800, Mr. Teo En Ming (Zhang Enming)
> > wrote:
> >
> >> Dear All,
> >>
> >> I have solved the problem.
> >>
> >> With reference to
> >>
> >> [1]http://lists.xensource.com/archives/html/xen-devel/2009-05/msg01327.html
> >> and
> >>
> >> [2]http://hightechsorcery.com/2008/03/virtualization-tip-always-disable-checksumming-virtual-ethernet-devices
> >> , I have executed the following command as root on all my 6 compute
> >> nodes
> >> (each compute node is a F11 linux 64-bit PV virtual machine).
> >>
> >> # ethtool -K eth0 tx off gso on
> >>
> >>
> > Jeremy: Do you know why this is still needed nowadays?
> >
> > Where's the bug? Why doesn't it work with the defaults?
> >
>
> I committed bugfix relating to gso/tso a couple of days ago, so I think
> (hope!) this shouldn't be necessary any more.
>
Ok. So it's just a matter of upgrading dom0 kernel, and then verifying
it works without ethtool hacks?
-- Pasi
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