-- JamieShiers - 17 Mar 2006

Draft Agendas

  • (There will also be a joint operations workshop at CERN the following week - agenda and announcment to appear).

Comments and Suggestions

Please feel free to add your comments and suggestions below! It will help organise the workshop such that it addresses the real needs of the sites and the experiments.

From Graeme Stewart [g.stewart@physics.gla.ac.uk]

I was musing over the T2 workshop looking at the WLCG services and tutorial sections, and thinking about contributions that the UKI ROC could make. I make these suggestions without any idea of what the other ROCs have been doing; I'm sure you both have a better overview and I won't be offended if you turn these down!

(Oh, Jeremy might have suggestions on the operational front - I don't know, but I see Jeff's chairing that session.)

So, areas where we are well advanced:

Storage: every UK T2 has an SRM. The split ended up ~1/3 dCache and ~2/3 DPM. This offers the possibility of something in the LCG services discussion: SRM in general? DPM specifically (me) or dCache specifically (Greig). But... it's possible that it would be better to have one of the SRM developers give an overview of the storage systems (Patrick, Jean-Philippe?) and for us to collaborate/ contribute to a storage tutorial on the Thursday or Friday.

Data management: As you know the UK has done a lot in testing T1<->T2 file transfers. This is, of course, intimately related to storage and indeed the client setup for T2s and data management is pretty much a no-brainer these days (and especially if we realise our goal of FTS clients using the BDII). We do have a quite nice script for doing T2 data transfers, which should probably be publicised more widely. Shaking out all the problems with networks, FTS and storage is a lot of work and a review of our experiences here might be useful. The main thing for T2s (once they've ripped out that last piece of 100Mb cable) is that it's tricky to optimise is T2 storage write rates. We now seem to have a good understanding of the issues. There's scope for an overview of FTS, as well as a tutorial on using it. Of course, you have Gavin and Paolo to hand.

That's all I can think of right now - let us know how we can help!



From LEROY Christine DAPNIA [c.leroy@cea.fr]

For the Tutorial, it would be good also to have sessions:

  • on the Information system (sites misconfigured can be black hole ...)
  • monitoring and accounting (How we will measure the production at one site ?)
  • Something on the submission system of the experiments (DIRAC, BOSS, ProdSyss Alien ??...to know what is the flow of the jobs, there requirements...)
  • xrootd if it is required?
  • VObox if it is required?

Cheers Christine

From DONNO Flavia CERN [Flavia.Donno@cern.ch]

The Tutorials are a good occasion for GGUS supporters to learn more about the services run for SC4 and the problems site admins might encounter during installation and operation. Therefore, it should be strongly suggested to GGUS ROC supporters to attend these tutorials. Also GGUS TPMs (Ticket Processing Managers) should be encouraged to follow the tutorials.

The tutorials material should be made available online. Tutorials should be possibly digitally recorded and the recording also made available on-line for further use.

Cheers Flavia

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