SUMMARYMany production Grid and e-Science infrastructures have begun to offer services to end-users during the past several years with an increasing number of scientific applications that require access to a wide variety of resources and services in multiple Grids. Therefore, the Grid Interoperation Now-Community Group of the Open Grid Forum-organizes and manages interoperation efforts among those production Grid infrastructures to reach the goal of a world-wide Grid vision on a technical level in the near future. This contribution highlights fundamental approaches of the group and discusses open standards in the context of production e-Science infrastructures.

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Job execution and management is one of the most important functionality provided by every modern Grid systems. In this paper we describe how the problem of job management has been addressed in the gLite middleware by means of the CREAM and CEMonitor services. CREAM (Computing Resource Execution and Management) provides a job execution and management capability for Grids, while CEMonitor is a general-purpose asynchronous event notification framework. Both components expose a Web Service interface allowing conforming clients to submit, manage and monitor computational jobs to a Local Resource Management System.

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The Cloud Area Padovana, deployed in 2014, is a scientific IaaS cloud, spread between two different sites: the INFN Padova Unit and the INFN Legnaro National Labs. It provides about 1100 logical cores and 50 TB of storage. The entire computing facility, owned by INFN, satisfies the computational and storage demands of more than 100 users belonging to about 30 research projects, mainly related to HEP and nuclear physics. The Padova data centre also has hosted and operated since 2015 an independent IaaS cloud managing network, storage and computing resources owned by 10 departments of the University of Padova, supporting a broader range of scientific and engineering disciplines. This infrastructure provides about 480 logical cores and 90 TB of storage and supports more than 40 research projects. These two clouds share only a limited set of ICT services and tools (mainly for configuration, monitoring and accounting), whereas their daily operations and maintenance are carried out separately by INFN and University personnel. At the end of 2017 we planned to merge the two infrastructures in order to optimise the use of resources (both human and ICT) and to avoid useless duplication of services. We discuss here how we plan to implement this integration, resulting in a single cloud infrastructure named CloudVeneto.it.