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A case study on climate models intercomparison data analysis addressing several classes of multi-model experiments is being implemented in the context of the EU H2020 INDIGO-DataCloud project. Such experiments require the availability of large amount of data (multi-terabyte order) related to the output of several climate models simulations as well as the exploitation of scientific data management...
The execution of data-based applications on distributed environments is prone to different failures in the different steps of the process. These steps range from the search on available references and data to the adaptation of the applications of interest to the different platforms where they are going to be efficiently run, which requires a deep understanding of their specific characteristics. In...
The management of distributed e-infrastructures introduces additional requirements in the monitoring system. The main issue is to enable users to achieve the awareness of the global status, and to present the information in function of the role: simple user, system admin, manager. In this work we present the solution created for the ReCaS infrastructure that federates four datacenters in south of...
The heterogeneous requirements of e-Science applications belonging to several scientific domains makes difficult to provide them with a support able to satisfy all the different needs. Usually, the grid middleware adopted provides applications with general tools unable to meet specific requirements. For this reason, a really powerful e-Infrastructure has to offer some additional services to complete...
The COMETA e-Infrastructure running in Sicily is compliant with the EGEE middleware and specifications offering a great computing power and huge storage capacity. Since its beginning one of the main goals has been to extend the adoption of Grid paradigm from the academic to business world. Several software and hardware extensions have been implemented in order to enhance the infrastructure performances;...
In a growing number of scientific disciplines, large data collections are emerging as important community resources. Data and metadata management exploiting the data grid paradigm is becoming more and more important as the number of involved data sources is continuously increasing and decentralizing. Efficient grid data access services are perceived as mandatory components for data management. In...
Grid computing enables sharing, selection, and aggregation of a wide variety of geographically distributed computational resources such as supercomputers, clusters, storage systems and data sources. A grid presents them as one unified resource for solving large-scale and data intensive computing applications. A middleware supports applications in distributed computing environments by providing services...
Since the birth of computational and data grids, many middlewares have been developed and deployed. Currently, they are used in a multitude of isolated e-infrastructures and a hot topic in grid technology in the last year or so has been that of middleware interoperability/interoperation. In this paper we present a new approach to grid interoperation based on the so called middleware co-existence....
Production grids such as EGEE allow scientists and researchers using aggregated computational power and storage resources. Many users/virtual organizations (VOs) e.g., bioinformatics, astrophysics, etc., need relational databases for their experiments. However, the EGEE middleware (gLite) lacks ad hoc software, and other available solutions are not currently suitable for this purpose within a gLite...
Since year 2006, the VOMS exensions are required from many virtual organizations in order to allow the access to various grid services by their users. The purpose of this work is to use grid services by GENIUS Grid Portal as front-end to the grid. The above described components, to generate a valid VOMS (virtual organization membership service) proxy on the user interface where the GENIUS portal is...
A preliminary study on the possible use of the GEANT4 (geometry and tracking) toolkit and Grid technology, for the Monte Carlo simulation of a clinical beam line for proton therapy, has been investigated. We realized a GEANT4 application giving the possibility to simulate a typical proton therapy beam line (including all its elements and two dosimetric systems: an ionisation chamber and a radiochromic...
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