I should add that this same user has submitted ~11K jobs to
our HTC in the last 2 weeks with a cpu/wall clock efficiency
of ~ 4.6K hours/ 146K hours =~ 3% :
Username njob % wall user system cpu
biomed032 7288 20 90949 1466 224 2907
biomed032 2741 16 56169 1310 100 1751
cheers,
Alex
On Monday 24 November 2008, Alex Martin wrote:
> 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
--
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| 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 |
| |
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