Report from US ALICE Yves Schutz WLCG 24/01/2007.

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Presentation transcript:

Report from US ALICE Yves Schutz WLCG 24/01/2007

WLCG 2 US Tier-1 Capable facilities for ALICE

WLCG 3 Capacities and operational support LBL - NERSC/PDSF  DOE proposal for ~500CPUs for ALICE  HPSS MSS has 22PB current capacity  Connected to ESNET via 10GB network  24/7 operation support in place LLNL - LC/Serial cluster  ALICE to run on a subset of ~640 CPUs  HPSS MSS has >PB current capacity  Connected to ESNET via 10GB network (same as NERSC)  24/7 operation support in place OSC - Itanium and Xeon clusters  ALICE to run on a subset of ~200 CPUs leveraged against NSF proposal  HPSS MSS available, tape procurement proposal submitted to NSF  24/7 operation support in place Houston TLC2 - Itanium clusters  ALICE to run on a subset of ~200 CPUs from NSF proposal  HPSS MSS available  24/7 operation support in place

WLCG 4 ALICE operation Sites  OSC and Houston TLC2 integrated and running the ALICE Grid Data Chalenges since 2004  LBL started operation last October  LLNL in preparation 2006 CPU/Storage capacity  ~90 ia64 at Houston/TLC2, 10 TB disk  ~50 ia32 at OSC, 35 TB disk, 35 TB MSS  ~40 ia32 at LBL, disk and tape storage being organized Middleware  Currently running with AliEn  Submitted a proposal to NSF to develop AliEn-OSG interfaces

WLCG 5 Resources US sites are providing ~7% of the total CPU capacity for ALICE  In the future, this proportion will be kept Relative contribution of US sites in PDC’06 (7% of total)

WLCG 6 Conclusions 4 US computing centres are contributing resources to the ALICE Grid computing  The amount of resources will increase in line with the ALICE requirements and in proportion to the US groups participation in the collaboration All four have T1 capability (MSS, network, support), especially important in view of the small number of T1s serving ALICE in Europe All sites (LLNL ongoing) are incorporated in the ALICE Grid and are participating in the Grid data challenges The relations and operational support of the centres are excellent The development programme to build interface of the ALICE services to OSG has not started Potential T2’s connecting: Mexico, Brazil, …