ALICE experiment is one of four experiments involved in the study of processes of hadrons and nuclei collisions at the highest energies of the modern accelerator.

Timely and statistically sufficient analysis of data recorded in such collisions is possible only under the processing of real and simulated data in a heterogeneous and geographically distributed computing environment.

Back in 2004, during mass generating of physical events and transferring the data to CERN and other computing centers, the JINR Central  Informational and Computing Complex (CICC)  took part in the debugging of basic ideas of ALICE distributed computing  in the frames of ALICE grid Environment (AliEn).

From 2004 to the present days CICC took and currently takes part in installation and support of software required for a successful and stable operation of the ALICE experiment.

At the CICC were tested repeatedly both new packages under development and the middleware, adopted for the use at ALICE. It should be emphasized that the participation of the CICC in testing a new version of the computing element CREAM-CE and testing of the interface between the application software and VO-box-middleware in a real loading of  the computer center has led to timely finishing of these program facilities to the modern state.

CICC also provided installation and support of a specific package xrootd for management of reading/writing data. Stable and reliable operation of the CICC provides a constant and significant contribution in the total number of analyzed and simulated events throughout the ALICE experiment.

Besides providing  ALICE grid activities, the CICC is actively involved in supporting of a local small test cluster to analyze LHC data in the  PROOF parallel computing system.

The results of the use of the CICC in the ALICE experiment were reported in all international conferences “Distributed Computing and Grid Technologies in Science and Education” held at JINR from 2006 every two years, at international conferences ACAT (Advanced Computing and Analysis Techniques in Physics Research), CHEP (Computing in High Energy and Nuclear Physics) and the Conferences of Young Scientists and Specialists at JINR.

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