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<!-- keep this as a security measure: * Set ALLOWTOPICCHANGE = Main.TWikiAdminGroup,Main.LCGAdminGroup * Set ALLOWTOPICRENAME = Main.TWikiAdminGroup,Main.LCGAdminGroup #uncomment this if you want the page only be viewable by the internal people * #Set ALLOWTOPICVIEW = Main.TWikiAdminGroup,Main.LCGAdminGroup --> ---+ CHIPP Phoenix Cluster Workshop June 11,th 2006, CSCS ---++ Tier2 Status * A second 'Schulleitungssitzung' needs to be had, since the cooling infrastructure installation is not secured yet in terms of funding. Our proposal was evaluated positively, and we don't have to do anything new again. * * Original cluster (old) and new cluster are working 'as one'. The nodes are not identical, but the software doesn't cares. The nodes are managed by cfengine. The hardware is reasonably reliable. Tom: 'it's not a complicated installation'. * ZFS is resilient with the machines we have so far. * Personnel at CSCS: August will be difficult, and until new person comes we have to 'scratch' the resources together. There are 2FTEs available for the Phoenix cluster. ---++ Tier3 Status ---+++ Geneva * 26TB, 108cores in workers and login PCs * atlas-ui01..03, grid00 and grid02 have 'double identities' - are also part of CERN network * NorduGrid as scheduler * Runs mostly ATLAS MC * Higher priority for Swiss Atlas members * Corrupted X4500 now because of a crash. * Plan for new system in Autumn - 2 more Thumpers and more cores (176) * System may be used also for other local activities (Neutrino expts) * Assumptions may not apply in future! as data volumes will increase significantly from MC to Production (Factor 200) Questions: * CERN Link? Why? * Idea is to have data directly from CERN more efficiently. (ui usage, AFS) * The computing model does not foresee it, that has to work as well of course but want to make use of physical locality too Advice: * Run X4500 with Solaris not SLC4, which crashes consistently with software raid. ---+++ Bern * Dedicated cluster, 36 cores, 10TB. SLC4/SuSE * UBELIX cluster from informatics department, 506 cores (shared), Gentoo * Plans - next year for 50cores and ~40TB space * ARC/Torque/NFS has scaling problems Questions: * AFS? No * Grow in size after 2008? Not necessarily * How do you mount? NFS-based or scp based (two kinds in ARC) ---+++ Tier3 LHCb * Zurich HEP cluster * openSUSE 32, by the end of the year the size is 20 cores, 10TB of disk (more than needed) * Matterhorn cluster (university), shared, SuSE 64 (512cores) using 'spare cycles' - university offers to host buyed hardware, and even to double it (match funds) * Lausanne - no info * openSUSE is an issue - does not work ---+++ Tier3 CMS in ZH * Money will be available * 60TB of storage in first year (3Thumpers) * 100kSI 15WNs, quadcore * Set this up by PSI, ETH pays hardware * There 14 cores and 40TB intel on the Hoenggerberg, SLC, CMS is installed on it ---++ Experiment Status ---+++ ATLAS * 2 Clusters in Geneva * 1 Cluster in Bern * Tier2 Phoenix * Geneva * Using NG in Geneva * .xrsl job descriptions in nordugrid * Grid Pilot, Ganga, pathena - did not try them all yet * Memory requirements per job: changes to 2GB per core (since january) ---+++ LHCb * DIRAC: some python issues with 64 * new CERN certs do not work with dCache * VOMS roles are not set correctly yet on all sites * There may be a nordugrid interface of dirac in the future, is being evaluated ---++ CMS Data Handling -- Main.PeterKunszt - 11 Jun 2007
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Topic revision: r2 - 2007-06-11
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PeterKunszt
LCGTier2
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