Computing Topics

Intended to contain all topics to be discussed in meetings. Between an agenda and a notebook.

/raidX deprecation and new homes

Pretty complex plan described in the thread "Migration of $HOME/raidX to DFS". The idea is to get rid of all RAIDs and turn them into hadoop datanodes. the $HOME area will be in an actual RAID5 + HSP. 20 TB of space.

Condor Migration

Supposed to happen in July 16th. 260 cores already in Condor. 80 on their way. SGE will be decommissioned by then.

AAA Usage - tests and instructions

• We have ComputingAAATests which is intended to be a knowledge base of the group of that works or not in terms of Xrootd access.
• In principle, works at any site that has a proper site-local-config.xml.
  • The basic procedure with CRAB is - tell it to ignore data location, whenever it runs, it won't find the data, fallback to Xrootd, query the redirector for the file and in principle run fine.
• Tested in the T3. Works as long as we have $X509_USER_PROXY defined to a location in a shared filesystem.

CRAB 3 testing

We might get some interesting suggestions of exercise for CSA14, including usage of MINIAOD. Despite of that we should evaluate/commission usage of CRAB3 by itself.

Here is the page that contain instructions for CRAB3.

-- Main.samir - 2014-07-10