Run an analysis using CRAB

You can use the xrootd service with CRAB by applying this patch. Here are the steps:
  1. You must set [CMSSW].global_data_service = 1 in your CRAB config.
  2. CRAB will perform a check to make sure that the dataset you are trying to run on is at Nebraska, Caltech, or UCSD. It will fail if this is not true.
  3. If the data is at one of the participating sites, then CRAB will allow you to run jobs at any US T2 site, plus T3_US_Omaha. CRAB still obeys your white/black lists, if you'd like to restrict the possible sites further.

So, once you set the global_data_service flag in CRAB, you can basically continue your "normal workflow" with CRAB.

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Topic revision: r1 - 2012-10-14 - BrianBockelman
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