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You're essentially talking about jobs via WMS, users are probably using ganga with LCG backend. Stop advertising that queue for atlas and that should do the trick. Pilots won't be affected. Peter On 9 March 2010 09:28, John Bland <[log in to unmask]> wrote: > Hi, > > We've been seeing a few ATLAS users submitting analysis jobs to our site > directly, rather than via the pilot systems. > > The problem with is that the users may not necessarily know which access > method to use at any particular site. The jobs we've seen have been using > direct RFIO access and even a small number of jobs are either saturating the > IOPS on the pools (small buffers) or saturating switches (big buffers). > > This is with only a relatively small number of jobs, a site full of them > would simply grind to a complete halt for days and be an enormous mess for > all concerned. > > Is there any way of getting around this other than ticketing every single > user that does it (or fixing ATLAS AOD read patterns ;0)? > > John > > -- > John Bland [log in to unmask] > System Administrator office: 220 > High Energy Physics Division tel (int): 42911 > Oliver Lodge Laboratory tel (ext): +44 (0)151 794 2911 > University of Liverpool http://www.liv.ac.uk/physics/hep/ > "I canna change the laws of physics, Captain!" >