Someone should give them a severe talking to (or kicking) about this and persuade them to use FTS. It was designed exactly to manage the dataflows. I guess this afternoon's operations meeting is the appropriate place.
John
> -----Original Message-----
> From: Testbed Support for GridPP member institutes [mailto:TB-
> [log in to unmask]] On Behalf Of Alex Martin
> Sent: 24 November 2008 10:22
> To: [log in to unmask]
> Subject: Re: Biomed data transfer volumes & usage issue
>
> A biomed user managed to start ~1000 gridftp processes on our
> old SE node here last week.
>
> cheers,
> Alex
>
>
> On Monday 24 November 2008, Coles, J (Jeremy) wrote:
> > Dear All
> >
> >
> >
> > In the site reports for last week Durham report:
> >
> >
> >
> > "A biomed user has been transferring huge amounts of data from our SE
> > (>500
> >
> > requests of the same 2.8GB file to a variety of worker nodes across
> > Europe. Unfortunately the high bandwidth has revealed instabilities
> > when transferring at close to the gigabit limit. I ticketed the user
> > and they have distributed more replicas - but they are not following
> the
> > grid data-to-cpu model and therefore will cause severe bandwidth
> issues
> > to all sites."
> >
> >
> >
> > Has any other site seen such a seeding exercise taking place or
> anything
> > related?
> >
> >
> >
> > Thanks,
> >
> > Jeremy
>
>
>
> --
> -----------------------------------------------------------------------
> -------
> |
> |
> | Dr. Alex Martin
> |
> | e-Mail: [log in to unmask] Queen Mary, University of
> London, |
> | Phone : +44-(0)20-7882-5033 Mile End Road,
> |
> | Fax : +44-(0)20-8981-9465 London, UK E1 4NS
> |
> |
> |
> -----------------------------------------------------------------------
> -------
|