DGAS is the Distributed Grid Accounting System deployed in the Italian Grid Infrastructure. DGAS provides the functionality needed for the implementation of a complete stand-alone infrastructure for computing and storage accounting of national Grids and Grid Virtual Organizations. It provides sensors for many different Local Resource Management Systems, repositories for persistent storage of usage records at site-level or national/regional-level and it comes along with a tool, called HLRMon, which provides a user-friendly interface to display the accounting data. DGAS and HLRmon are supported by the INFN Grid and EGEE projects.

DGAS-layers

The Distributed Grid Accounting System (DGAS) is a full featured Grid accounting toolkit.

  • It is completely grid oriented, fully distributed without needing a central repository.

  • It relies upon a network of independent accounting servers used to keep the accounting records.

  • It enables the deployment of hierarchical servers, suitable for regional grids or Virtual Organizations.

  • It can be used for Computational Usage Records regarding CPU, memory, storage and so on.

  • It can be used for Economic Accounting, managing the cost of the jobs executed by Grid User on Grid Resources.

  • It relies on a modular and scalable architecture, suitable to be adopted both by little sites, with few CPUs, and up to very large facilities.