1. 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

2. 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 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

3. 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

4. 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

5. 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