The State of DOSAR

DOSAR VI Workshop at Ole Miss

April 17-18 2008

Dick Greenwood

Louisiana Tech University

– Community and campus based grid organization– Its primary goal is spreading/enabling grid use

• DOSAR in Korean is the God of Martial Arts

• DOSAR evolved from the DØ Remote Analysis effort– Coordinated group efforts in DØ

simulation/reconstruction/production

What is DOSAR ?

Distributed Organization for Scientific & Academic Research

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History

Ancient times: DØ Remote Computing Era

– SAM, DØ data management system, in place: pre-2001

– DØ Remote Analysis Model Proposed: Nov. 2001

– Proposal for RAC accepted and endorsed by DØ: Aug. 2002

– UTA awarded MRI for RAC: June 2002

– Formation of DØ Southern Analysis Region (D0SAR 1.0): Apr. 2003

• D0SAR DØ MC Production begins

– Activation of 1st US (Regional Analysis Center) RAC at UTA: Nov. 2003

– Formation and activation of DOSAR Grid for MC: Apr. 2004

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Desktop Analysis Stations

Institutional Analysis Centers

Regional Analysis Centers

Normal InteractionCommunication PathOccasional Interaction Communication Path

Central Analysis Center (CAC)

DAS DAS…. DAS DAS….

IAC...

IAC IAC…

IAC

RAC….

RAC

DØ Remote Analysis Model (DØRAM)

Fermilab

•Data and Resource hub•MC Production•Data processing•Data analysis

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History

– Transition to Distributed Organization for Scientific and

Academic Research, DOSAR: Apr. 2005 (DOSAR 2.0)

• Active engagements with LHC experiments began

– DOSAR VOMS installed at UTA: May 2005

– DOSAR registered as a VO in OSG: July 2005

– ATLAS distributed production and analysis system,

Panda, implemented at OU and UTA: Jan. 2006

– All groups engaged in LHC experiments

Modern times: beyond DØ

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Who is DOSAR ?

First Generation IAC’s University of Texas at

Arlington Louisiana Tech

University Langston University University of Oklahoma Tata Institute (India)

• Second Generation IAC’s– Cinvestav, Mexico

SPRACE - São Paulo Regional Analysis Center, Universidade Estadual Paulista; Brazil

University of Kansas Kansas State University

• Third Generation IAC’s– University of Arizona, Tucson– Rice University Ole Miss, University of

Mississippi

Iowa State University Louisiana State University Oklahoma State University …4/17/2008 6Dick Greenwood

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Goals

DOSAR seeks to bring together institutions which can/must use GRID technology to solve their computing problems (esp smaller institutions)

As its needs increase faster than funding, the scientific community should try to tap into these un(under)-used resources but, there are many barriers to utilizing these resources (technical, financial, manpower, …)

DOSAR should, as necessary, serve as a representative/liason for these institutions to the greater GRID community

DOSAR should help enable maximal use of available resources at the member institutions

(strength in collaboration)

(member institutions should serve as nucleation points for regional/statewide GRIDS)

Accomplishments

→ LTU brought in Super-Mike and additional resources for DØ & ATLAS

→ UTA plays leadership role in HiPCAT, Texas Grid community; Leading BioTex grid, working with chemists, geologists and medical professionals

→ LTU Working as a leading institution in LONI, Louisiana Grid community

→ OU and LU have been working toward creating “The Oklahoma state grid”, working closely with OSCER

→ OU has successfully developed a Condor pool of pc’s running CoLinux on Windows. UTA is developing a similar system.

→ SPRACE leads Brazilian national grid effort w/ funds!!!4/17/2008 8Dick Greenwood

DOSAR VI at OleMiss

DØ Production

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Breakdown of DOSAR Contribution to DØ Production

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DOSAR Weekly Production by site(common scale)

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DOSAR Weekly Production by site

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Some Successes in DOSAR Funding

• Funds from NSF MRI for UTA – RAC: 2002– Construction of the first U.S.

university based RAC• EPSCoR + University funds for LTU –

IAC: 2003– Increase IAC compute resources

• Brazilian National Funds for SPRACE: 2003 & 5– Construction of an extensive RAC

• EPSCoR funds for OSU, OU & LU: 2004– Compute resources for IAC– Human resource for further development– Renewal submitted

• LTU at part of LONI wins support from State of LA: 2005

• OU, LU and UTA, together with UNM, won a joint ATLAS Tier 2 site: 2005

• LTU won a joint MRI funds (PetaShare): 2006

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DOSAR Strategy

• Maximally exploit existing software and utilities to enable as many sites to contribute to the DØ and LHC experiments– Continue to participate in DØ MC and Reco

activities in opportunistic manner– Focus on LHC experiments– Support OSG move into the global grid

framework– Engage in and contribute significantly in OSG

• Engage in realization of computing grid beyond HEP– Work closely with campus and state

computing people to bring grid onto campuses

• Bring DOSAR specific computing jobs to the grid

• Want to make grid usage more commonplace4/17/2008 14Dick Greenwood

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Working with OSG

• We accomplished virtually everything we wanted in DØ

– J. Snow (LU) is the leader in MC production

• Bring fresh expertise to OSG• Expertise in monitoring solutions such as

Ganglia and MonALISA UTA working on Panda ATLAS monitoring together with CMS experiment

• LTU continues to investigate HA applications • DOSAR now has seat on OSG Council• Possibly engage non-HEP science use of

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Developments Since Last Workshop

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Ole Miss is ready to resume MC production!

•Got OSG v0.6.0 working (October 2007)• Fixed Condor configuration (November 2007)• Running OSG Jobs (11/2007 - 2/2008)• Power Failure “broke” Condor (February 2007• Upgraded Condor (April 2007)• Reconfigured Farm and Upgraded OSG (April 2007)

Further Developments

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DOSAR Members Very Active in LHC Preparations for Data Taking

•All ATLAS members engaged in Tier 2 and Tier 3 FDR activities

Jim Cochran (ISU)leads the US ATLAS FDR effort and was recently appointed Chair of the U.S. ATLAS Analysis Support Activities

•Sao Paulo Groups (UNESP & UFABC) playing similar Tier 2 role in CMS preparations

Conclusions• DOSAR is an example of a successful grid

organization– Critically important asset to DØ

• All groups actively engaged in LHC experiments- (and preparations for data taking!)

• Using DOSAR resources for DØ and LHC data analyses and production

• Closely engaged in OSG activities• Continue Desktop Cluster deployment,

CONDOR pools• Provide leadership role in state-wide grid

efforts• Expanding membership and scope

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