Jean-Marc André, U. Behrens, J. G. Branson, Philipp Brummer, Olivier Chaze, Sergio Cittolin, Diego da Silva Gomes, Georgiana-Lavinia Darlea, Christian Deldicque, Z. Demiragli, Marc Dobson, Nicolas Doualot, S. Erhan, J. Fulcher, D. Gigi, Maciej Gładki, F. Glege, G. Gomez Ceballos, J. Hegeman, André Holzner, Michael Lettrich, Audrius Mečionis, Frans Meijers, E. Meschi, R. K. Mommsen, Srećko Morović, Vivian O’Dell, L. Orsini, I. Papakrivopoulos, Christoph M. E. Paus, Andrea Petrucci, M. Pieri, Dinyar Rabady, A. Rácz, V. Rapševičius, T. Reis, Hannes Sakulin, Christoph Schwick, Dainius Simeleviciu, Mantas Stankevičius, Cristina Vazquez Velez, Christian Wernet, Petr Zejdl

doi:10.1051/epjconf/201921407017

Experience with dynamic resource provisioning of the CMS online cluster using a cloud overlay

Jean-Marc André, U. Behrens, J. G. Branson, Philipp Brummer, Olivier Chaze, Sergio Cittolin, Diego da Silva Gomes, Georgiana-Lavinia Darlea, Christian Deldicque, Z. Demiragli, Marc Dobson, Nicolas Doualot, S. Erhan, J. Fulcher, D. Gigi, Maciej Gładki, F. Glege, G. Gomez Ceballos, J. Hegeman, André Holzner, Michael Lettrich, Audrius Mečionis, Frans Meijers, E. Meschi, R. K. Mommsen, Srećko Morović, Vivian O’Dell, L. Orsini, I. Papakrivopoulos, Christoph M. E. Paus, Andrea Petrucci, M. Pieri, Dinyar Rabady, A. Rácz, V. Rapševičius, T. Reis, Hannes Sakulin, Christoph Schwick, Dainius Simeleviciu, Mantas Stankevičius, Cristina Vazquez Velez, Christian Wernet, Petr Zejdl

EPJ Web of Conferences · 2019

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Summary

The primary goal of the online cluster of the Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) is to build event data from the detector and to select interesting collisions in the High Level Trigger (HLT) farm for offline storage. With more than 1500 nodes and a capacity of about 850 kHEPSpecInt06, the HLT machines represent similar computing capacity of all the CMS Tier1 Grid sites together. Moreover, it is currently connected to the CERN IT datacenter via a dedicated 160 Gbps network connection and hence can access the remote EOS based storage with a high bandwidth. In the last few years, a cloud overlay based on OpenStack has been commissioned to use these resources for the WLCG when they are not needed for data taking. This online cloud facility was designed fo

Source type: Peer-reviewed study
DOI: 10.1051/epjconf/201921407017
Catalogue ID: BFmoakviqe-of6aqa

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