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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 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.
J
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