A. CORANA

We present SoRTSim, a high-level simulator designed to evaluate tools built over the middleware to support additional services besides the stan- dard ones, particularly to allow the execution on Grid platforms of appli- cations with strict QoS requirements, up to Soft Real-Time. SoRTSim has been designed to be quite general and to be easily...

Current grid resource management tools provide sufficient support for jobs executed in batch or "best-effort" modes, but are not adequate for jobs with demanding quality of service requirements, like jobs with time constraints. For such class of applications, missing the required deadline can have unpredictable consequences, from loss of...

We present a distributed approach for grid resource discovery, which combines a structured view of resources (single machines, homogeneous and heterogeneous clusters) at the physical organization (PO) level with a super-peer network connecting the various POs. The proposed architecture is modular and independent of the particular grid...

Grid management has always been a complex issue, especially when Grids are composed by a large number of resources and the e±ciency is a core aspect (i.e. for realizing QoS-based Grids). For this, Grid admin- istration becomes increasingly important, and advanced instrumentation for Grid management is needed. In this paper we present...