Implementation of analysis and computing infrasturucture (TIER-3g) for cern data grid (WLCG)

Today, cluster computers based on computation have been widely used especially in disciplines like experimental physics, astronomy and medical sciences. With the evolving technology, multicore server systems, which can run the calculation software more efficiently, replacing cluster computers or there are studies to make them work together. The main need for such systems arises from the critical reason such as to handle big data of the experiments and analyses accurately and in time, to ensure that different analyses are carried out by different researchers at the same time and to increase efficiency. When one consider that big data is produced in petabyte ranks annually at the Center for Nuclear Research (CERN), one of the world's major experiments, the operation of a data network responding to need and the productivity, sustainability and development of analysis centers becomes important. ATLAS (A Toroidal LHC Apparatus) (Aad et all, 2008) one of the experiments running at CERN, explained the calculation model a few years before data acquisition (2004). According to that explanation, transformation of the raw data received at the Tier-0 center to the distributed data by sharing among the Tier-1 and Tier-2 centers in the hierarchical structure, processing in CERN analysis facility and researchers taking an active role in data management and reprocessing stages were predicted. The Large Hadron Collider (LHC) data network (WLCG), which was developed for this purpose and established during the same period, has successfully completed initial testing and initial data processing (Shiers, 2007). On the other hand, Major institutes predicted that a network performing central processing such as storage of raw data, decomposition and distribution by various algorithms would not meet the requirements of the researchers to analysed the n-tuples. In this period, Tier-3g centers have been developed which are set up for researchers, decentralized and fully under the control of the institute that they are established (Gonzalez de la Hoz et all 2008; Haupt 2010; Villipana 2012). These centers are part of the WLCG and can store the latest experimental data and carry out analyses in line with the priorities of the institutes. Institutes develop and use the analysis software programs, which are open sourced developed and can work effectively on multicore servers, on Tier-3g centers. Tier-3g center studies, will be developed in Istanbul Aydin University, will gain importance for the high luminosity data of Large Hadron Collider which is expected to continue to run until 2023. In these studies, the latest experimental data, can be balanced and analysed in multi-core processors in the appropriate format (D3PD, xAOD).