ARC also provides client tools, as well as API in C++, Python and Java. The security model of ARC is identical to that of Grid solutions, relying on delegation of user credentials and the concept of Virtual Organisations.
ARC provides an abstraction layer over computational resources, complete with input and output data movement functionalities. The Advanced Resource Connector (ARC) middleware is an Open Source software solution to enable distributed computing infrastructures with the emphasis on processing large volumes of data.
Tweaked how cloud records are loaded so that the last received record for a VM in a month is kept (rather than the one with the latest timestamp).
Statistics are available for view in different detail by Users, VO Managers, Site Administrators and anonymous users according to well defined access rights. The accounting information is gathered from different sensors into a central accounting database where it is processed to generate statistical summaries that are available through the EGI/WLCG Accounting Portal. APEL is an accounting tool that collects accounting data from sites participating in the EGI and WLCG infrastructures as well as from sites belonging to other Grid organisations that are collaborating with EGI, including OSG, NorduGrid and INFN.
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