CHEP 2009

Session

Grid Middleware and Networking Technologies

Grid Middleware

23 Mar 2009, 14:00

Prague

279. The UK particle physics Grid - status and developments

Dr Jeremy Coles (University of Cambridge - GridPP)

23/03/2009, 14:00

Grid Middleware and Networking Technologies

oral

During 2008 we have seen several notable changes in the way the LHC experiments have tried to tackle outstanding gaps in the implementation of their computing models. The development of space tokens and changes in job submission and data movement tools are key examples. The first section of this paper will review these changes and the technical/configuration impacts they have had at the site...

333. ITIL and Grid services at GridKa

Tobias Koenig (Karlsruhe Institute of Technology (KIT))

23/03/2009, 14:20

Grid Middleware and Networking Technologies

oral

Offering sustainable Grid services to users and other computing centres is the main aim of GridKa, the German Tier-1 centre of the WLCG infrastructure. The availability and reliability of IT services directly influences the customers’ satisfaction as well as the reputation of the service provider and not to forget the economical aspects. It is thus important to concentrate on processes and...

344. Advances in Grid Operations

Ms Maite Barroso (CERN), Nicholas Thackray (CERN)

23/03/2009, 14:40

Grid Middleware and Networking Technologies

oral

A review of the evolution of WLCG/EGEE grid operations Authors: Maria BARROSO, Diana BOSIO, David COLLADOS, Maria DIMOU, Antonio RETICO, John SHADE, Nick THACKRAY, Steve TRAYLEN, Romain WARTEL As the EGEE grid infrastructure continues to grow in size, complexity and usage, the task of ensuring the continued, uninterrupted availability of the grid services to the ever increasing number...

383. A Business Model for the Establishment of the European Grid Infrastructure

Laura Perini (INFN Milano), Tiziana Ferrari (INFN CNAF)

23/03/2009, 15:00

Grid Middleware and Networking Technologies

oral

International research collaborations increasingly require secure sharing of resources owned by the partner organizations and distributed among different administration domains. Examples of resources include data, computing facilities (commodity computer clusters, HPC systems, etc.), storage space, metadata from remote archives, scientific instruments, sensors, etc. Sharing is made possible...

411. Analysis of the Use, Value and Upcoming Challenges for the Open Science Grid

Mrs Ruth Pordes (FERMILAB)

23/03/2009, 15:20

Grid Middleware and Networking Technologies

oral

The Open Science Grid usage has ramped up more than 25% in the past twelve months due to both the increase in throughput of the core stakeholders – US LHC, LIGO and Run II – and increase in usage by non-physics communities. We present and analyze this ramp up together with the issues encountered and implications for the future. It is important to understand the value of collaborative...

414. CDF way to Grid

Dr Donatella Lucchesi (University and INFN Padova)

23/03/2009, 15:40

Grid Middleware and Networking Technologies

oral

The CDF II experiment has been taking data at FNAL since 2001. The CDF computing architecture has evolved from initially using dedicated computing farms to using decentralized Grid-based resources on the EGEE grid, Open Science Grid and FNAL Campus grid. In order to deliver high quality physics results in a timely manner to a running experiment, CDF has had to adapt to Grid with minimum...

154. GOCDB, A Topology Repository For A Worldwide Grid Infrastructure

Mr Gilles Mathieu (STFC, Didcot, UK)

23/03/2009, 16:30

Grid Middleware and Networking Technologies

oral

All grid projects have to deal with topology and operational information like resource distribution, contact lists and downtime declarations. Storing, maintaining and publishing this information properly is one of the key elements to successful grid operations. The solution adopted by EGEE and WLCG projects is a central repository that hosts this information and makes it available to users and...

226. Bringing the CMS Distributed Computing System into Scalable Operations

Dr Jose Hernandez (CIEMAT)

23/03/2009, 16:50

Grid Middleware and Networking Technologies

oral

Establishing efficient and scalable operations of the CMS distributed computing system critically relies on the proper integration, commissioning and scale testing of the data and workfload management tools, the various computing workflows and the underlying computing infrastructure located at more than 50 computing centres worldwide interconnected by the Worldwide LHC Computing...

254. A Dynamic System for ATLAS Software Installation on OSG Grid site

Mr Xin Zhao (Brookhaven National Laboratory,USA)

23/03/2009, 17:10

Grid Middleware and Networking Technologies

oral

ATLAS Grid production, like many other VO applications, requires the software packages to be installed on remote sites in advance. Therefore, a dynamic and reliable system for installing the ATLAS software releases on Grid sites is crucial to guarantee the timely and smooth start of ATLAS production and reduce its failure rate. In this talk, we discuss the issues encountered in the...

272. Migration of ATLAS PanDA to CERN

Dr Graeme Andrew Stewart (University of Glasgow)

23/03/2009, 17:30

Grid Middleware and Networking Technologies

oral

The ATLAS Production and Distributed Analysis System (PanDA) is a key component of the ATLAS distributed computing infrastructure. All ATLAS production jobs, and a substantial amount of user and group analysis jobs, pass through the PanDA system which manages their execution on the grid. PanDA also plays a key role in production task definition and the dataset replication request system....

442. Critical services in the LHC computing

Dr Andrea Sciabà (CERN)

23/03/2009, 17:50

Grid Middleware and Networking Technologies

oral

The LHC experiments (ALICE, ATLAS, CMS and LHCb) rely for the data acquisition, processing, distribution, analysis and simulation on complex computing systems, run using a variety of services, provided by the experiment services, the WLCG Grid and the different computing centres. These services range from the most basic (network, batch systems, file systems) to the mass storage services or the...

502. Status and outlook of the HEP Network

Prof. Harvey Newman (Caltech)

23/03/2009, 18:10

Grid Middleware and Networking Technologies

oral

I will review the status, outlook recent technology trends and state of the art developments in the major networks serving the high energy physics community in the LHC era. I will also cover the progress in reducing or closing the Digital Divide separating scientists in several world regions from the mainstream, from the perspective of the ICFA Standing Committee on Inter-regional Connectivity.

174. Where is the Internet heading to?

Olivier Martin (Ictconsulting)

24/03/2009, 15:20

Grid Middleware and Networking Technologies

oral

Despite many coordinated efforts to promote the use of IPv6, the migration from IPv4 is far from being up to the expectations of most Internet experts. However, time is running fast and unallocated IPv4 address space should run out within the next 3 years or so. The speaker will attempt to explain the reasons behind the lack of enthusiasm for IPv6, in particular, the lack of suitable migration...

188. SVOPME: A Scalable Virtual Organization Privileges Management Environment

Gabriele Garzoglio (FERMI NATIONAL ACCELERATOR LABORATORY)

24/03/2009, 15:40

Grid Middleware and Networking Technologies

oral

Grids enable uniform access to resources by implementing standard interfaces to resource gateways. Gateways control access privileges to resources using user's identify and personal attributes, which are available through Grid credentials. Typically, Gateways implement access control by mapping Grid credentials to local privileges. In the Open Science Grid (OSG), privileges are granted on...

206. VOMRS / VOMS Utilization Patterns And Convergence Plan

Andrea Ceccanti (INFN CNAF, Bologna, Italy), Tanya Levshina (FERMI NATIONAL ACCELERATOR LABORATORY)

24/03/2009, 16:30

Grid Middleware and Networking Technologies

oral

The Grid community uses two well-established registration services, which allow users to be authenticated under the auspices of Virtual Organizations (VOs). The Virtual Organization Membership Service (VOMS), developed in the context of the Enabling Grid for E-sciencE (EGEE) project, is an Attribute Authority service that issues attributes expressing membership information of a subject...

489. The new gLite Authorization System

Andrea Ceccanti (CNAF - INFN), John White White (Helsinki Institute of Physics HIP)

24/03/2009, 16:50

Grid Middleware and Networking Technologies

oral

The new authorization service of the gLite middleware stack is presented. In the EGEE-II project, the overall authorization study and review gave recommendations that the authorization should be rationalized throughout the middleware stack. As per the accepted recommendations, the new authorization service is designed to focus on EGEE gLite computational components: WMS, CREAM, and...

490. On the role of integrated distributions in grid computing

Dr Oliver Keeble (CERN)

24/03/2009, 17:10

Grid Middleware and Networking Technologies

oral

Grid computing as currently understood is normally enabled through the deployment of integrated software distributions which expose specific interfaces to core resources (data, CPU), provide clients and also higher level services. This paper examines the reasons for this reliance on large distributions and discusses whether the benefits are genuinely worth the considerable investment...

402. CDF software distribution on Grid using Parrot

Dr Simone Pagan Griso (University and INFN Padova)

24/03/2009, 17:30

Grid Middleware and Networking Technologies

oral

Large international collaborations that use de-centralized computing models are becoming a custom rather than an exception in High Energy Physics. A good computing model for such big and spread collaborations has to deal with the distribution of the experiment-specific software around the world. When the CDF experiment developed its software infrastructure, most computing was done on...

404. Grid Middleware for WLCG - where are we now, and where do we go from here?

Dr Ian Bird (CERN)

24/03/2009, 17:50

Grid Middleware and Networking Technologies

oral

This paper will provide a review of the middleware that is currently used in WLCG, and how that compares to what was initially expected when the project started. The talk will look at some of the lessons to be learned, and why what is in use today is sometimes quite different from what may have been anticipated. For the future it is clear that finding the effort for long term support and...

452. Modern methods of application code distributions on the Grid

Pablo Saiz (CERN)

24/03/2009, 18:10

Grid Middleware and Networking Technologies

oral

AliEn is the GRID interface that ALICE has developed to be able to do its distributed computing. AliEn provides all the components needed to build a distributed environment, including a file and metadata catalogue, a priority-based job execution model and a file replication system. Another of the components provided by AliEn is an automatic software package installation service, PackMan....

180. New strategy for job monitoring on the WLCG scope

Julia Andreeva (CERN)

26/03/2009, 14:00

Grid Middleware and Networking Technologies

oral

Job processing and data transfer are the main computing activities on the WLCG infrastructure. Reliable monitoring of the job processing on the WLCG scope is a complicated task due to the complexity of the infrastructure itself and the diversity of the currently used job submission methods. The talk will describe the new strategy for the job monitoring on the WLCG scope, covering...

85. PhEDEx Data Service

Mr Ricky Egeland (Minnesota)

26/03/2009, 14:00

Grid Middleware and Networking Technologies

oral

The PhEDEx Data Service provides access to information from the central PhEDEx database, as well as certificate-authenticated managerial operations such as requesting the transfer or deletion of data. The Data Service is integrated with the 'SiteDB' service for fine-grained access control, providing a safe and secure environment for operations. A plugin architecture allows server-side modules...

118. Data Management Evolution and Strategy at CERN

Mr Alberto Pace (CERN)

26/03/2009, 14:20

Grid Middleware and Networking Technologies

oral

Data management components at CERN form the backbone for production and analysis activities of the experiments of the LHC accelerator. Significant data amounts (15PB/y) will need to be collected from the online systems, reconstructed and distributed to other sites participating in the Worlrdwide LHC computing Grid for further analysis. More recently also significant resources to support local...

182. Real Time Monitoring of Grid Job Executions

Dr Janusz Martyniak (Imperial College London)

26/03/2009, 14:20

Grid Middleware and Networking Technologies

oral

In this paper we describe the architecture and operation of the Real Time Monitor (RTM), developed by the Grid team in the HEP group at Imperial College London. This is arguably the most popular dissemination tool within the EGEE Grid. Having been used, on many occasions including GridFest and LHC inauguration events held at CERN in October 2008. The RTM gathers information from EGEE sites...

173. Data Management in EGEE

Ákos Frohner (CERN)

26/03/2009, 14:40

Grid Middleware and Networking Technologies

oral

Data management is one of the cornerstones in the distributed production computing environment that the EGEE project aims to provide for a e-Science infrastructure. We have designed and implemented a set of services and client components, addressing the diverse requirements of all user communities. LHC experiments as main users will generate and distribute...

345. Evolution of SAM in an enhanced model for monitoring WLCG services

Mr david collados (CERN)

26/03/2009, 14:40

Grid Middleware and Networking Technologies

oral

Authors: David Collados, Judit Novak, John Shade, Konstantin Skaburskas, Lapka Wojciech It is four years now since the first prototypes of tools and tests started to monitor the Worldwide LHC Computing Grid (WLCG) services. One of these tools is the Service Availability Monitoring (SAM) framework, which superseded the SFT tool, and has become a keystone for the monthly WLCG availability...

467. dCache ready for LHC production and analysis.

Dr Patrick Fuhrmann (DESY)

26/03/2009, 15:00

Grid Middleware and Networking Technologies

oral

At the time of CHEP'09, the LHC Computing Grid approach and implementation is rapidly approaching the moment it finally has to prove its feasibility. The same is true for dCache, the grid middle-ware storage component, meant to store and manage the largest share of LHC data outside of the LHC Tier 0. This presentation will report on the impact of recently deployed dCache sub-components,...

347. Monitoring and operational management in USLHCNet

Ramiro Voicu (California Institute of Technology)

26/03/2009, 15:00

Grid Middleware and Networking Technologies

oral

USLHCNet provides transatlantic connections of the Tier1 computing facilities at Fermilab and Brookhaven with the Tier0 and Tier1 facilities at CERN as well as Tier1s elsewhere in Europe and Asia. Together with ESnet, Internet2 and the GEANT, USLHCNet also supports connections between the Tier2 centers. The USLHCNet core infrastructure is using the Ciena Core Director devices that provide...

472. On StoRM performance and scalability

Luca Magnoni (INFN CNAF)

26/03/2009, 15:20

Grid Middleware and Networking Technologies

oral

StoRM is a Storage Resource Manager (SRM) service adopted in the context of WLCG to provide data management capabilities on high performing cluster and parallel file systems as Lustre and GPFS. The experience gained in the readiness challenges of LHC Grid infrastructure proves that scalability and performance of SRM services are key characteristics to provide effective and reliable storage...

399. RSV: OSG Grid Fabric Monitoring and Interoperation with WLCG Monitoring Systems

Robert Quick (Indiana University)

26/03/2009, 15:20

Grid Middleware and Networking Technologies

oral

The Open Science Grid (OSG) Resource and Service Validation (RSV) project seeks to provide solutions for several grid fabric monitoring problems, while at the same time providing a bridge between the OSG operations and monitoring infrastructure and the WLCG (Worldwid LHC Computing Grid) infrastructure. The RSV-based OSG fabric monitoring begins with local resource fabric monitoring, which...

486. The impact and adoption of GLUE 2.0 in the LCG/EGEE production Grid

Dr Stephen Burke (RUTHERFORD APPLETON LABORATORY)

26/03/2009, 15:40

Grid Middleware and Networking Technologies

oral

The GLUE information schema has been in use in the LCG/EGEE production Grid since the first version was defined in 2002. In 2007 a major redesign of GLUE, version 2.0, was started in the context of the Open Grid Forum following the creation of the GLUE Working Group. This process has taken input from a number of Grid projects, but as a major user of the version 1 schema LCG/EGEE has had a...

20. Will Clouds Replace Grids? Can Clouds Replace Grids?

Dr Jamie Shiers (CERN)

26/03/2009, 15:40

Grid Middleware and Networking Technologies

oral

The WLCG service has been declared officially open for production and analysis during the LCG Grid Fest held at CERN - with live contributions from around the world - on Friday 3rd October 2008. But the service is not without its problems - services or even sites suffer degradation or complete outage with painful repercussions on experiment activities, the operations and service model is...

27. Grid Interoperation with ARC middleware for CMS experiment

Dr Jukka Klem (Helsinki Institute of Physics HIP)

26/03/2009, 16:30

Grid Middleware and Networking Technologies

oral

The Compact Muon Solenoid (CMS) is one of the LHC (Large Hadron Collider) experiments at CERN. CMS computing relies on different grid infrastructures to provide calculation and storage resources. The major grid middleware stacks used for CMS computing are gLite, OSG and ARC (Advanced Resource Connector). Helsinki Institute of Physics (HIP) builds one of the Tier-2 centers for CMS computing....

106. The CREAM-CE: First experiences, results and requirements of the 4 LHC experiments

Dr Alessandro di Girolamo (CERN IT/GS), Dr Andrea Sciaba (CERN IT/GS), Dr Elisa Lanciotti (CERN IT/GS), Dr Nicolo Magini (CERN IT/GS), Dr Patricia Mendez Lorenzo (CERN IT/GS), Dr Roberto Santinelli (CERN IT/GS), Dr Simone Campana (CERN IT/GS), Dr Vincenzo Miccio (CERN IT/GS)

26/03/2009, 16:30

Grid Middleware and Networking Technologies

oral

In a few months, the four LHC detectors will collect data at a significant rate that is expected to ramp-up to around 15PB per year. To process such a large quantity of data, the experiments have developed over the last years distributed computing models that build on the overall WLCG service. These implement the different services provided by the gLite middleware into the computing models of...

238. ARC middleware: evolution towards standards-based interoperability

Dr Oxana Smirnova (Lund University / NDGF)

26/03/2009, 16:50

Grid Middleware and Networking Technologies

oral

The Advanced Resource Connector (ARC) middleware introduced by NorduGrid is one of the leading Grid solutions used by scientists worldwide. Its simplicity, reliability and portability, matched by unparalleled efficiency, make it attractive for large-scale facilities like the Nordic DataGrid Facility (NDGF) and its Tier1 center, and also for smaller scale projects. Being well-proven in...

139. Use of the gLite-WMS in CMS for production and analysis

Giuseppe Codispoti (Dipartimento di Fisica)

26/03/2009, 16:50

Grid Middleware and Networking Technologies

oral

The CMS experiment at LHC started using the Resource Broker (by the EDG and LCG projects) to submit production and analysis jobs to distributed computing resources of the WLCG infrastructure over 6 years ago. In 2006 it started using the gLite Workload Management System (WMS) and Logging & Bookkeeping (LB). In current configuration the interaction with the gLite-WMS/LB happens through the CMS...

201. An XACML profile and implementation for Authorization Interoperability between OSG and EGEE

Gabriele Garzoglio (FERMI NATIONAL ACCELERATOR LABORATORY)

26/03/2009, 17:10

Grid Middleware and Networking Technologies

oral

The Open Science Grid (OSG) and the Enabling Grids for E-sciencE (EGEE) have a common security model, based on Public Key Infrastructure. Grid resources grant access to users because of their membership in a Virtual Organization (VO), rather than on personal identity. Users push VO membership information to resources in the form of identity attributes, thus declaring that resources will be...

143. Using CREAM and CEMON for job submission and management in the gLitemiddleware

Massimo Sgaravatto (INFN Padova)

26/03/2009, 17:10

Grid Middleware and Networking Technologies

oral

In this paper we describe the use of CREAM and CEMON for job submission and management within the gLite Grid middleware. Both CREAM and CEMON address one of the most fundamental operations of a Grid middleware, that is job submission and management. Specifically, CREAM is a job management service used for submitting, managing and monitoring computational jobs. CEMON is an event...

407. CDF GlideinWMS usage in Grid computing of High Energy Physics

Dr Marian Zvada (Fermilab)

26/03/2009, 17:30

Grid Middleware and Networking Technologies

oral

Many members of large science collaborations already have specialized grids available to advance their research in the need of getting more computing resources for data analysis. This has forced the Collider Detector at Fermilab (CDF) collaboration to move beyond the usage of dedicated resources and start exploiting Grid resources. Nowadays, CDF experiment is increasingly relying on...

240. Deploying distributed network monitoring mesh for LHC Tier-1 and Tier-2 sites

Mr Maxim Grigoriev (FERMILAB)

26/03/2009, 17:30

Grid Middleware and Networking Technologies

oral

Fermilab hosts the US Tier-1 center for data storage and analysis of the Large Hadron Collider's (LHC) Compact Muon Solenoid (CMS) experi ment. To satisfy operational requirements for the LHC networking model, the networking group at Fermilab, in collaboration with Internet2 and ESnet, is participating in the perfSONAR-PS project. This collaboration has created a collection of network...

427. DIRAC3 - the new generation of the LHCb grid software

Dr Andrei TSAREGORODTSEV (CNRS-IN2P3-CPPM, MARSEILLE)

26/03/2009, 17:50

Grid Middleware and Networking Technologies

oral

DIRAC, the LHCb community Grid solution, was considerably reengineered in order to meet all the requirements for processing the data coming from the LHCb experiment. It is covering all the tasks starting with raw data transportation from the experiment area to the grid storage, data processing up to the final user analysis. The reengineered DIRAC3 version of the system includes a...

245. WAN Dynamic Circuit Support at Fermilab

Mr Philip DeMar (FERMILAB)

26/03/2009, 17:50

Grid Middleware and Networking Technologies

oral

Fermilab has been one of the earliest sites to deploy data circuits in production for wide-area high impact data movement. The US-CMS Tier-1 Center at Fermilab uses end-to-end (E2E) circuits to support data movement with the Tier-0 Center at CERN, as well as with all of the US-CMS Tier-2 sites. On average, 75% of the network traffic into and out of the Laboratory is carried on E2E circuits....

453. The ALICE Workload Management System: Status before the real data taking

Dr Alina Grigoras (CERN PH/AIP), Dr Andreas Joachim Peters (CERN IT/DM), Dr Costin Grigoras (CERN PH/AIP), Dr Fabrizio Furano (CERN IT/GS), Dr Federico Carminati (CERN PH/AIP), Dr Latchezar Betev (CERN PH/AIP), Dr Pablo Saiz (CERN IT/GS), Dr Patricia Mendez Lorenzo (CERN IT/GS), Dr Predrag Buncic (CERN PH/SFT), Dr Stefano Bagnasco (INFN/Torino)

26/03/2009, 18:10

Grid Middleware and Networking Technologies

oral

With the startup of LHC, the ALICE detector will collect data at a rate that, after two years, will reach 4PB per year. To process such a large quantity of data, ALICE has developed over ten years a distributed computing environment, called AliEn, integrated with the WLCG environment. The ALICE environment presents several original solutions, which have shown their viability in a number of...