Activity summary

Activity Support
VO/project Purpose Contacts Web site Grid users Managerial contact Technical contacts Web site
LQCD Support the CERN TH / ETH Ph. de Forcrand (CERN PH and ETH)
project-lgc-vo-<VO>-users
project-lgc-vo-<VO>-coordinator
project-lgc-vo-<VO>-support
https://twiki.cern.ch/twiki/bin/view/ArdaGrid/SU3
LQCD-DM Grid Data Management tools for data sharing in the Lattice QCD community A. Juttner (CERN)          
CERNTH Support the CERN TH Unit (PH dept) M. Mangano (CERN PH) http://ph-dep.web.cern.ch/ph-dep/cgi-bin/ph-struct.pl?TH
project-lgc-vo-<VO>-users
project-lgc-vo-<VO>-coordinator
project-lgc-vo-<VO>-support
CERNTheoryUnitOnTheGrid

Activity reporting

VO/project Period Goals Achievements Support requested Time spent Issues Changes in responsibility or support
LQCD-DM 2010 enable Castor-based file repository for the users in remote HPC centers After thorough technology investigation, xrdcp was chosen as a client solution for transfers to/from HPC Centers. Castor access provided by xrootd farm and xrootd proxy server running in a VO-box at CERN. Evaluation activity (usage of Grid tools for different use cases) 3% Integration into mainstream CERN/IT services. Discussion in progress with IT-DSS for possible hand-over and future setup of this service.
LQCD 2009 Collect new data for studying the QGP phase transition Multiple runs (~700 CPUyears). Links to Lattice here. In 2009 this activity has been presented at the ECSA09 conference: http://indico.cern.ch/conferenceDisplay.py?confId=60021 and other workshop/conferences Application porting + establishing a system to run Ganga/DIANE. Ran on best effort. Essential development (Tech. Student in 2008) allowed to automatised the running of the system. Remaining tasks left to the users 5% Still running on GEAR + Swiss resources. Do we really need a specialised VO? Contacts with LSU (Shantenu Jha et al.). The goal is to have them run the system on TeraGrid. Consultancy role kept with us
CERNTH 2010-Q2 Evaluation phase (no commitment). Run with 1-2 pilot users to evaluate requirements and needs Use Ganga to support TH unit Pilot users: check how much support effort would be needed Twiki refurbished. 2 coffee meetings with pilot users. Few hours to cook up a couple of scripts (examples to transparently switch between LCG and LSF) 1 user (Jeppe) uses C++ application based on SFT libraries. For the moment we agreed to avoid sw installations at side (.so dowloaded with wget). Examples and test results under ~laman/public/jeppe . Although the reliability (#failed jobs) is really low, this application does not rely on all jobs to suceed: every subjob contribute 1nth of the desired statistics and all jobs are completely independent.

The use case of the second pilot user is more complex (application running on a cluster and using the shared file system to do some interprocess synchronisation). Wait for more feedback from the first pilot user

 

Notes:

project-lgc-vo-<VO>-users
is the list to contact the grid users
project-lgc-vo-<VO>-coordinator
is the list to contact the responsible(s) for a grid activity
project-lgc-vo-<VO>-support
is the list to contact the support team for a grid activity

-- MassimoLamanna - 27-Apr-2010

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Topic revision: r4 - 2010-06-04 - MassimoLamanna
 
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