GSI Helmholtzzentrum für Schwerionenforschung
Meeting at 10:00 in the GSI cafeteria (1.floor) Preliminary agenda: 1) Status and plans of xrootd/proof cluster - proof datasets (?) - XRDPROOFtoolkit and new POSIX interface from TU Dresden 2) GRID jobs: - problems with grid1, news - LSF timeouts - Ana's analysis jobs ---> VERY IMPORTANT!!!!!!!! (pending since too long!!!!!!!) 3) MC production at GSI - LSF jobs using token do not work - problems with v4-07-Rev-01 - installation strategy to be revised 4) speed tests: merging of AliESDs.root files 5) File trasfers: - transfer speed - place of information about WHICH files are at GSI, and exactly where (plus lists to be used locally).
Re: Meeting on Friday, November 9 - minutes
Silvia, Victor, Kilian, Peter M. 1. Status & plans xrootd/proof cluster - Upgrade to new version shifted until Marian is back and confirmed that it is working correctly. - Files on Alien managed fileservers should not be changed/moved/deleted with non-Alien methods, otherwise it is not possible to guarantee the consistency of the file catalogue - If fileservers for local use are needed, they should be separated from Alien managed fileservers. 2. Short report from LCG Taskforce meeting the day before see: http://indico.cern.ch/conferenceDisplay.py?confId=10376 - Strange filenames are a requirement to have a global unique scheme, but a link to logical filenames could be provided (timescale?), if Marian stops pushing his GSI only solution into Aliroot - Certificate based authorization scheme for xrootd will be provided in the future, but the timeline is unclear (needs work from three groups: xrootd, dCache and Alien). That is a prerequisite to solve the security concerns of GridKa 3. Performance problems on grid1 should be solved: disentangle alien and xrootd. 4. A new public interactive 64 bit machine is needed. Discussion: Why? What is not possible on lxetch64? Only if problems there could not be solved we should go for a dedicated Alice only solution. 5. File transfers to GSI xrd clusters should check the checksum on both ends immediately after the transfer to prevent a lot of files in unknown conditions at GSI. 6. At the proof workshop should be at least two talks from GSI, Kilian from the architect/administrator point of view, Marian from the developer/users point of view. 7. Discussion about the proof tutorial next week. Peter M.