LHCbDirac: distributed computing in LHCb

Stagni, F.; Charpentier, Ph.; Graciani, R.; Tsaregorodtsev, A.; Closier, J.; Máthé, Z.; Úbeda, Marta Gallego; Zhelezov, A.; Lanciotti, E.; Romanovskiy, V.; Ciba, K.; Ramo, A Casajus; Roiser, S.; Sapunov, M.; Remenska, Daniela; Bernardoff, Vincent; Santana, Renato; Nandakumar, R.

doi:10.1088/1742-6596/396/3/032104

Cited by 26 publications

(14 citation statements)

References 7 publications

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“…DIRAC was initially developed inside the LHCb collaboration, as a LHCb-specific project, but since 2010 the LHCb-specific code resides in the LHCbDIRAC [7] Being a community Grid solution used by several communities, DIRAC can interface with many resource types, and with many providers. Resource types are, for example, a computing element (CE), a catalog, or a storage element.…”

Section: Dirac Pilotsmentioning

confidence: 99%

DIRAC universal pilots

Stagni

McNab

Luzzi

et al. 2017

J. Phys.: Conf. Ser.

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Section: Dirac Pilotsmentioning

confidence: 99%

DIRAC universal pilots

Stagni

McNab

Luzzi

et al. 2017

J. Phys.: Conf. Ser.

Self Cite

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“…The approach is similar to the theory simulations. However, only invited volunteers, who are members of the LHCb collaboration, are accepted as an X.509 credential from an IGTFaccredited CA is required to communicate directly with LHCb's Dirac [19] distributed computing framework and hence can only be used by trusted parties. Efforts to address this issue are currently ongoing and once ready, the application can be added to the Virtual LHC@home project alongside with the theory simulations application, after which the general public be allowed to contribute.…”

Section: Beauty@homementioning

confidence: 99%

Towards a Production Volunteer Computing Infrastructure for HEP

Høimyr

Marquina

Asp

et al. 2015

J. Phys.: Conf. Ser.

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Abstract. Following the successful inclusion of virtualisation to volunteer computing for theory simulations back in 2011, the use of volunteer computing with BOINC and CernVM has been extended to cover simulations for the LHC experiments ATLAS, CMS and LHCb. This paper describes the status of the BOINC volunteer computing platform at CERN used for LHC@home and how it has been designed to address a heterogeneous environment of different user communities with different computing infrastructure. The aim of the recent developments is to provide a volunteer computing platform that the experiments can build upon to exploit opportunistic resources. Furthermore, new developments of common solutions to span user authentication domains are explained.

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“…LHCb data are managed centrally through the Data Management System (DMS) of the LHCbDirac framework [13]. The already existing tool for storage usage monitoring and accounting provided by the Service Level Status (SLS) [14] system is based on the information reported by the Storage Resource Manager (SRM) [6] system and shows the total amount of used and available space per site, split by SRM space token.…”

Section: Lhcbmentioning

confidence: 99%

Data Storage Accounting and Verification at LHC experiments

Huang

Lanciotti²,

Magini³

et al. 2012

J. Phys.: Conf. Ser.

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All major experiments at the Large Hadron Collider (LHC) need to measure real storage usage at the Grid sites. This information is equally important for resource management, planning, and operations. To verify the consistency of central catalogs, experiments are asking sites to provide a full list of the files they have on storage, including size, checksum, and other file attributes. Such storage dumps, provided at regular intervals, give a realistic view of the storage resource usage by the experiments. Regular monitoring of the space usage and data verification serve as additional internal checks of the system integrity and performance. Both the importance and the complexity of these tasks increase with the constant growth of the total data volumes during the active data taking period at the LHC. The use of common solutions helps to reduce the maintenance costs, both at the large Tier1 facilities supporting multiple virtual organizations and at the small sites that often lack manpower. We discuss requirements and solutions to the common tasks of data storage accounting and verification, and present experiment-specific strategies and implementations used within the LHC experiments according to their computing models.

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LHCbDirac: distributed computing in LHCb

Cited by 26 publications

References 7 publications

DIRAC universal pilots

DIRAC universal pilots

Towards a Production Volunteer Computing Infrastructure for HEP

Data Storage Accounting and Verification at LHC experiments

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