Cosener’s House – 30th Jan’03 1

LHCb Progress & Plans

Nick Brook

University of Bristol

•News & User Plans

•Technical Progress

•Review of deliverables

Cosener’s House – 30th Jan’03 2

Xmas MC production

• 4.4M event produced over Xmas

• All 8 UK institutes participated

• UK produced ~1/3 of the events

• UK produced ~40% of events produced outside of CERN

• All DST data copied back to CERN

• Data currently stored at some production sites (Cambridge, RAL & ScotGrid)

• DataGrid just another “site”

Cosener’s House – 30th Jan’03 3

Xmas Production

• 4.4M event produced over Xmas correspond to < 1Tb of DSTs

• If required the whole of the DSTs produced can reside on disk at RAL

• Data transfer tools have been (and still are) being developed at CERN – production centre manager tool

• New book-keeping database available that allows replica dataset also to be stored

• Should be able to generate files that need to be replicated to local site from DB

• Should be able to generate file i/p “opt” files from DB for each site

Cosener’s House – 30th Jan’03 4

Data Challenge & Summer analysis

• Data Challenge due to commence Feb (for 3 months) 10-20M events

• Unlikely all DSTs will be available on disk at RAL (but might.) Need to use MSS at RAL ??

• LHCb UK investigating “namespce” convention to allow long name (i.e. disk file type name) access to data. Investigation of tools from BaBar – ATLAS involvement as well

Cosener’s House – 30th Jan’03 5

Production Server

New LHCb Monte Carlo production system (DIRAC)

LocalTemp

Storage

Batch/GRIDFront End

Node

Node

Node

Batch/GRIDFront End

Node

Node

Node

RemoteGrid

Storage

Production Manager

viaMonitoring

Client

Production Server

Production Server

Gennady Kuznetsov

Cosener’s House – 30th Jan’03 6

MC production architecture

Edit

Prod.Mgr

Work flowEditor

ProductionEditor

InstantiateWorkflow

•Job request•Status updates

ProductionAgent

Productiondata

Scripts

Production DB

Production Server

Bookkeeping infoBookkeeping

Updates

Cosener’s House – 30th Jan’03 7

Production agent

nJob

Batch farm

ProductionAgent

bbftp

Storage

Castor

Job request

Job status update

Bookkeeping info

Production center

Submit job

Log files

Histo filesData files

Transfer data

BK files

Checkdata

Softw

are i

nsta

llatio

n

Job

stat

us

upda

te

Cosener’s House – 30th Jan’03 8

GRIDGRID or local Batch

Job Agent

Job

Job Agent

Job

Job Agent

Job

MonitoringClient

JB Container

Java BeanJava Bean

Java Bean

Production Server

ObjectDBase

Site service JAR(Static)

Agent service JAR(Dynamic)

Job service JAR(Dynamic)

Application service JAR(Static)

Statefull sessionvia JRMI / CORBA

Stateless sessionvia JRMI / CORBA

Database persistencevia JDBC

JMS or SOAPmessaging service

LHCb Monitoring and control tools

Cosener’s House – 30th Jan’03 11

POOL activities

• Catalog & Grid work package

• Provided file catalog browser (PYTHON)

• Code submitted to CVS repository

Carmine Cioffi

Cosener’s House – 30th Jan’03 12

GANGA - activitiesKarl Harrison & Alexander Soroko

• Demonstration later today – see Alexander’s talk

• Fortnightly telephone meetings – CERN/UK/LBL

• Web site exists – http://ganga.web.cern.ch/ganga/

• Close working relationship with LCG PI project & US Grappa project

Cosener’s House – 30th Jan’03 13

Deliverable Review

• LHC experiments will be an integral part of the CERN LCG project

• LCG currently defined “middleware” to appear on their testbed

• LHCb UK hope to re-align deliverables with LCG

• Will review the situation ~March

• First “public” release of LCG facilities – July’03