Definition of targets

The targets should be defined by the experiments. This monitoring tool can only publish the targets to that the user can see them and have an idea of what the nominal value is for a given activity and metrics.

The problem is that the definition of targets is very difficult, for several reason:

  • many activities and metrics don't have official targets (and if a number is not official, better not to publish it!)
  • targets are not static, they can change in time and it's very difficult to keep them updated

For LHCb there are no targets defined. But, about data transfer, one can have a feeling of the expected rates from this document: computing model. The problem is that this numbers are stored in a document which is not guaranteed to be updated.

For the other experiment: still not clear... So far (29 Jan) the only targets provided are the KSI2K for ALICE and the number of job slots according to a fair share at PIC. What is clear is that there are official agreements between sites and VOs about the KSI2K averaged on a time period.

29 Jan 2009: from a mail thread with Jeff Templon and Flavia: Flavia says: to add to what Jeff says, there is the official pledge table maintained by Sue Foffano. I am developing a Django interface to it that would allow several clients to extract the information in various ways, for instance as python dictionaries. I have to talk about this with Flavia...

Conclusion: the Siteview application is prepared to insert targets (there is a table to store the values and in the GridMap display we show the target together with the metric value), but so far the only metric we have a target for is wall time for ALICE jobs.

-- ElisaLanciotti - 08 Jun 2009

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Topic revision: r1 - 2009-06-08 - ElisaLanciotti
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