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Driven by the evolution of the Linear Hadron Collider (LHC) at CERN, the infrastructure of the Worldwide LHC Computing Grid undergoes rapid changes. The need to store and analyze experimental data at an ever growing rate has led to major architecture and software improvements for the optimization of data flow and access. This article presents, as a case study, the technological solutions that were...
We report a series of preliminary results on the efficiency of tape-storage solutions that are relevant for large-scale experimental facilities such as the Nuclear Physics pillar of the Extreme Light Infrastructure (ELI-NP). Our investigations are focused on the efficiency of tape data access scenarios, in particular a comparison between the Linear Tape File System and native Linux tools, and the...
Supporting three of the four main user communities of the Large Hadron Collider (LHC) at CERN, RO-07-NIPNE is the most complex grid site of the Romanian Tier-2 Federation (RO-LCG, http://lcg.nipne.ro). Here we present an overview of the recent hardware, software and network implementations at the grid site, in view of the computational support for the second run of the LHC. Special emphasis is placed...
The efficient functioning of grid data centers is one of the most important factor that preoccupies the academic world (professors, researchers, PhD students and so on).
The paper first reviews the main achievements obtained by the Romanian LCG Federation (RO-LCG) since its founding, emphasizing its recent performances within the WLCG collaboration and also discussing the current limitations of the network infrastructure. Then the presentation focuses on the technical organization of the DFCTI's main Grid site, RO-07-NIPNE, and on the requirements it must satisfy...
Daryl Pregibon — Google Inc. Research Scientist states that: “Data Mining is a mixture of statistics, artificial intelligence and database research.” In other words, the purpose of this process is the automatic discovery of knowledge hidden in data using various computational techniques. The purpose of this work is represented by the analysis of the impact of GRID technology for storing and processing...
The ATLAS group from IFIN-HH is involved in several physics studies. For these we perform data analysis and Monte Carlo simulations operating large amounts of data. The main aim of this following paper is to present how we developed a computing cluster who offers access to the experiment software via a distributed filesystem and it's able to process the simulations and real data analysis combining...
In recent years, E-learning has been in a continuous development, due to the fact that it eases the process of teaching, evaluation and selfevaluation, offering schedulling flexibility and a tool support. E-learning makes learning content available even in remote locations, eliminating the need to travel to the place where the content is delivered. Nevertheless, the current E-learning platforms have...
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