Grid Query Optimisation in the Data Grid Query Optimisation Task - WP2, European DataGRID Project
نویسندگان
چکیده
Our aim is to realise an agent-based Grid simulator for studying "Grid Query Optimisation Strategies", as partially described in [SSS+01]. The purposes of this document are the following: • To identify some HEP use cases and, based on these use cases and requirements, to identify some user-level and Grid-level query optimisation opportunities. • To define an architecture for the simulator, in which the components and services identified in the ATF proposal [ATF] are integrated with components and services, specifically targeted to query optimisation. • To define how the components and services in the simulator interact in order to perform optimisation based on the identified optimisation opportunities.
منابع مشابه
Agent-Based Query Optimisation in a Grid Environment
+ IASTED International Conference on Applied Informatics, Innsbruck, Austria, February 2001 Abstract The next generation experiments in High Energy Physics are the driving force for setting up an International Data Grid at CERN, the European Organization for Nuclear Research. Hundreds of Petabytes of data will be distributed and replicated all over the globe starting from 2005. In order to anal...
متن کاملOptorSim: A Grid Simulator for Replica Optimisation
The remit of the European DataGrid (EDG) [2] project was to develop an infrastructure that could support the intensive computational and data handling needs of widely distributed scientific communities. An important part of managing the data present in such a Grid is file replication placing copies of files at different sites in order to reduce data access times, hence shortening job running ti...
متن کاملQuery Processing and Optimisation in Integrated Heterogeneous Grid Resources∗
The performance of Grid computing technologies for distributed data access and query processing has been investigated in a number of studies. However, different Grid data sources may have schema conflicts which require fine-grained resolution through the use of data integration technologies that are not supported by the current generation of Grid data access and querying middleware. This is par...
متن کاملData Management in an International Data Grid Project
In this paper we report on preliminary work and architectural design carried out in the ”Data Management” work package in the International Data Grid project. Our aim within a time scale of three years is to provide Grid middleware services supporting the I/Ointensive world-wide distributed next generation experiments in HighEnergy Physics, Earth Observation and Bioinformatics. The goal is to s...
متن کاملWeighted-HR: An Improved Hierarchical Grid Resource Discovery
Grid computing environments include heterogeneous resources shared by a large number of computers to handle the data and process intensive applications. In these environments, the required resources must be accessible for Grid applications on demand, which makes the resource discovery as a critical service. In recent years, various techniques are proposed to index and discover the Grid resource...
متن کامل