**2.3.1 The Worldwide LHC Computing Grid in India**

WLCG represents the world largest grid infrastructure and with the start of data taking at the CERN Large Hadron Collider (LHC) WLCG entered the full production phase (Bonacorsi, 2011). The data from the LHC experiments will be distributed around the globe, according to a four-tiered model. India participates with two Tier2 centres supported by the Department of Atomic Energy (DAE). One at the Tata Institute for Fundamental Research (TIFR) Mumbai provides the services for the CMS experiment. The other one, dedicated to the ALICE experiment, is located in Kolkata and managed by the Saha Institute of Nuclear Physics in collaboration with the Variable Energy Cyclotron Centre (VECC).

These Tier2 centres provide access to CMS & ALICE users working from Tier III centres of Universities and national labs and LCG Data Grid services for analysis. TIFR is presently connected to CERN with the 2.5 Gb/s TEIN3 link via NKN. The ALICE TIER2 centre is also connected via NKN at 1 Gb/s. Thanks to a coordinated action of the main actors involved

Applications Exploiting e-Infrastructures Across

can use up to 44 TB of total space.

Virtual Organization.

then use the grid infrastructure for their research.

configure additional services on the request of users.

cooperation across European and Indian e-Infrastructures.


Europe and India Within the EU-IndiaGrid Project 291

Moreover a dedicated Virtual Organization (VO euindia) was made available by the project to the users from the beginning of 2006. Such a VO included several grid resources distributed across Europe and India and it was fundamental to allow users to deploy and

Grid resources available to the user communities via the dedicated VO comprises grid sites installed and configured mainly using gLite 3.2 middleware running on 64bit Linux Operating System. Available hardware is relatively recent and includes several multicore (4, 8,12,24 CPU-cores) Worker Nodes. A snapshot taken at end of December 2010 shows that VO members have at disposal , on a best effort basis, over about 7300 CPU-cores (1800 CPUsockets) that represents a computing power of around 20 MSI00; on the storage side, the VO

The EU-IndiaGrid2 project installed and currently maintains all the gLite central services needed to support the operational status of the user applications belonging to the EUIndia

As discussed in the next section on the top of this standard gLite infrastructure some advanced services have been installed and configured. We stress here the importance to have our own dedicated EUIndia services that allow the project to easily experiment and

The increase of usage of the EU-IndiaGrid infrastructure, combined with scientific results obtained and presented at relevant international conferences or published on journals represent a clear measure of success of the user communities activity. The project Workshops and Conferences dedicated to the different applications were an important vehicle for the dissemination of results and for fostering the adoption of grid technology toward the scientific community and not only. In addition, supporting and addressing the problem of the interoperability at the application level further contributed to promote the use of advanced grid technology, and the cooperation between different projects and Institutes. Applications and user communities behind can thus be regarded as a key to

EU-IndiaGrid2 which started on January 2010, leveraged on the EU-IndiaGrid project achievements and the strong cooperation links established with the foremost European and Indian e-Infrastructure initiatives and then paved the way for successful sustainable

EU-IndiaGrid2 is strongly integrated in the Indian e-Infrastructure scenario. Its partners take leading roles in NKN, WLCG and GARUDA and a solid and fruitful cooperation has

EU-IndiaGrid2 provided specific support to ensure exploiting the progress in connectivity favouring Euro-India cooperation in e-Science. The project supports the interoperation and interoperability between the European and the Indian grid infrastructures as well as four main application areas in the domain of Biology, Climate Change, High Energy Physics and

Material Science. The main landmarks during the time life of the projects includes:


sustainability, and they can help motivating the investment in e-Infrastructures.

been established between these initiatives and the EU-IndiaGrid2 project.

participating also to the EU-IndiaGrid2 project TIFR is successfully exploiting the TEIN3 connectivity for LHC data transfer since December 2010.
