3 documents found, page 1 of 1
Lessons learned from the ATLAS performance studies of the Iberian Cloud for the...
Sanchez-Martinez, V.; Borges, G.; Borrego, C.; Peso, J.del; Delfino, M.; Gomes, J.; Gonzales de la Hoz, S.; Pacheco Pages, A.; Salt, J.; Sedov, A.In this contribution we describe the performance of the Iberian (Spain and Portugal) ATLAS cloud during the first LHC running period (March 2010-January 2013) in the context of the GRID Computing and Data Distribution Model. The evolution of the resources for CPU, disk and tape in the Iberian Tier-1 and Tier-2s is summarized. The data distribution over all ATLAS destinations is shown, focusing on the number of ...
Phenomenology Tools on Cloud Infrastructures using OpenStack
Campos, I.; Fernandez-del-Castillo, E.Fernandez; Heinemeyer, S.; Lopez-Garcia, A.; Pahlen, F.v.d.; Borges, G.We present a new environment for computations in particle physics phenomenology employing recent developments in cloud computing. On this environment users can create and manage “virtual” machines on which the phenomenology codes/tools can be deployed easily in an automated way. We analyze the performance of this environment based on “virtual” machines versus the utilization of physical hardware. In this way we...
The dependence of the anomalous J/psi suppression on the number of participant ...
M. C. Abreu; Alessandro, B.; Alexa, C.; Arnaldi, R.; Atayan, M.; Baglin, C.; Baldit, A.; Bedjidian, M.; Beole, S.; Boldea, V.; Bordalo, P.; Borges, G.The observation of an anomalous J/psi suppression in Pb-Pb collisions by the NA50 Collaboration can be considered as the most striking indication for the deconfinement of quarks and gluons at SPS energies. In this Letter, we determine the J/psi suppression pattern as a function of the forward hadronic energy E-ZDC measured in a Zero Degree Calorimeter (ZDC). The direct connection between EZDC and the geometry o...