[gin-jobs] Standarized Execution Environment

[Thierry Delaitre]

On Wed, 28 Mar 2007, Thomas Soddemann wrote:

> Hi Dave,
>
> and how would  you run Xen on a BlueGene or a XT4?
>
> HW Virtualizations like Xen or VMWare are certainly useful in contexts
> where performance does not play the most important role. But when it
> comes to job execution virtualization is currently not an option.
> E.g. parallel environments have to be used the increased latency in
> network communication may swallow the benefit of parallel execution.
> Support for Infiniband or Myrinet is not available anyway, afaik.

You can use XenSmartIO with Xen and IB. this provides direct IB access
from the Xen VMs to minimise overheads.

T.

> IMHO, hence, everything has to work without virtualization, especially
> when supercomputers are the targeted computing resource.


> Cheers,
> Thomas
>
> Dave Berry wrote:
> > Have you considered the use of virtualisation technologies such as Xen
> > or VMWare?
> >
> > I've heard that VMWare provide a free package that allows you to wrap an
> > application and all the libraries (and OS?) that it depends on so that
> > you can run it on any machine - but I don't know the details.
> >
> > Dave.
> >
> >
>
>

----------------------------------------
Dr Thierry DELAITRE
Systems and Services Manager, CSCS
University of Westminster
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