Preparations for the CMS-HI Computing Workshop in Bologna September 12, 2009 Charles F. Maguire Vanderbilt University for the CMS-HI Program August 19, 2009 MIT-Vanderbilt EVO Meeting

Workshop in Bologna, Sep. 12 Present and Perfect the CMS-HI Computing Model No EVO transmissions, will rely mostly on on-site participants Can look into audio links (local call to Bologna number, how much all day?) Draft agenda prepared by Matthias and myself Need to provide more details to the agenda contents Need to assign participants who will be there and block out time allocations Preparation Work Done So Far Contacts and and responses from T0/CAF managers for CMS pp program Bolek has investigated what is needed for AliCal during HI running Julia is checking on the DQM operations, more consultation expected Contacts and first responses from Tier1 and Tier2 sites (renegotiations?): France (Tier1 + Tier2): new e-mail expected in late August, probable 2010 commitment Turkey (Tier2): resources committed for 2010, no one present at Bologna Network testing to/from Vanderbilt will start Sao Paulo (Tier2): resources possible in 2010, no one present at Bologna Russia (Tier2): Official Tier2 site for HI, distributed over several institutions Network testing to/from Vanderbilt in progress; will Olga attend or is she on vacation? Substantial progress on reconstruction CPU times and memory footprint Need to examine corresponding simulation and analyses requirements August 19, 2009 MIT-Vanderbilt EVO Meeting

MIT-Vanderbilt EVO Meeting Draft Agenda, Part I Opening Remarks: Kasemann, Wyslouch, and Maguire (15 minutes each) Goals of the workshop, major questions, impact on future CMS review meetings CMS-HI physics and institutional overview, working relationship with CMS-HEP General description of CMS-HI computing mode, similarities/differences with CMS-HEP T0/CAF session: Gutsche Oliver, Markus Klute, and Bolek Wyslouch The generation and processing of alignment/calibration files during data taking The initial data reconstruction at the Tier0 and the computing requirements for this task CPU and mass storage requirements session: Maguire proxy for Eric’s work The estimates of the off-line compute requirements based on the physics research HI data tiers, sizes and total data volumes Resources proposed and committed: Various names + Maguire The initial availability of Tier1 facilities for CMS-HI in 2010 The initial availability of Tier2 facilities for CMS-HI in 2010 and later August 19, 2009 MIT-Vanderbilt EVO Meeting

MIT-Vanderbilt EVO Meeting Draft Agenda, Part II Data processing and analysis session: Maguire Transport of the raw data and processed files to the Vanderbilt site for archiving Benchmarking of current network tests Analysis of reconstruction output at the Vanderbilt site and at overseas sites Monte Carlo production session: MIT and Russia (?) speakers overview of Monte Carlo software, memory and CPU requirements the MC production at the MIT and Moscow Tier2 sites production at other sites? Session on operations: Various (Sheldon, Tackett, proxy for Velkovska) role of Data Operations, Facility Operations, Analysis Operations in HI data collection, processing and production special needs on DQM, monitoring, calibration and alignment, required development effort Summary session: collect open questions, action items August 19, 2009 MIT-Vanderbilt EVO Meeting

Tasks for PInGs and Computing Groups From HI West Meeting, August 14 First year estimates of analysis and disk space requirements for 50 TBytes of minimum bias data These estimates should be tied to the publication goals which we have for the first year Establish the physics goals for the second and third year HLT runs Determine the CPU and disk requirements for these HLT runs Tasks For Computing Group (names should be attached to these tasks) Based on the draft agenda shown in the next two pages Establish the Alignment/Calibration work flow and supervision Be ready and able to utilize the Tier0/CAF resources during HI running Demonstrate that the grid network of CMS-HI is reliable and sufficient Prove that the CMS-HI reco/analysis job streams work in a large scale Confirm all the non-Tier0 compute resources for 2010 and later August 19, 2009 MIT-Vanderbilt EVO Meeting