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Robust and Efficient Large-Large Table Outer Joins on Distributed Infrastructures (2014)
Book Chapter
Cheng, L., Kotoulas, S., Ward, T., & Theodoropoulos, G. (2014). Robust and Efficient Large-Large Table Outer Joins on Distributed Infrastructures. In F. Silva, I. Dutra, & V. S. Costa (Eds.), Euro-Par 2014 Parallel Processing : 20th International Conference, Porto, Portugal, August 25-29, 2014 ; proceedings (258-269). Springer Verlag. https://doi.org/10.1007/978-3-319-09873-9_22

Outer joins are ubiquitous in many workloads but are sensitive to load-balancing problems. Current approaches mitigate such problems caused by data skew by using (partial) replication. However, contemporary replication-based approaches (1) introduce... Read More about Robust and Efficient Large-Large Table Outer Joins on Distributed Infrastructures.

Efficiently Handling Skew in Outer Joins on Distributed Systems (2014)
Presentation / Conference Contribution
Cheng, L., Kotoulas, S., Ward, T., & Theodoropoulos, T. (2014, May). Efficiently Handling Skew in Outer Joins on Distributed Systems. Presented at 2014 14th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing, Chicago, IL, USA

Outer joins are ubiquitous in databases and big data systems. The question of how best to execute outer joins in large parallel systems is particularly challenging as real world datasets are characterized by data skew leading to performance issues. A... Read More about Efficiently Handling Skew in Outer Joins on Distributed Systems.

Automated Dynamic Resource Provisioning and Monitoring in Virtualized Large-Scale Datacenter (2014)
Presentation / Conference Contribution
Abar, S., Lemarinier, P., Theodoropoulos, G., & OHare, G. (2014, May). Automated Dynamic Resource Provisioning and Monitoring in Virtualized Large-Scale Datacenter. Presented at 2014 IEEE 28th International Conference on Advanced Information Networking and Applications, Victoria, Victoria, Canada

Infrastructure as a Service (IaaS) is a pay-as-you go based cloud provision model which on demand outsources the physical servers, guest virtual machine (VM) instances, storage resources, and networking connections. This article reports the design an... Read More about Automated Dynamic Resource Provisioning and Monitoring in Virtualized Large-Scale Datacenter.

Space-Time Matching Algorithms for Interest Management in Distributed Virtual Environments (2014)
Journal Article
Liu, E., & Theodoropoulos, G. (2014). Space-Time Matching Algorithms for Interest Management in Distributed Virtual Environments. ACM Transactions on Modeling and Computer Simulation, 24(3), Article 15. https://doi.org/10.1145/2567922

Interest management in Distributed Virtual Environments (DVEs) is a data-filtering technique designed to reduce bandwidth consumption and therefore enhances the scalability of the system. This technique usually involves a process called interest matc... Read More about Space-Time Matching Algorithms for Interest Management in Distributed Virtual Environments.

Synchronised Range Queries in Distributed Simulations of Multi-Agent Systems (2013)
Journal Article
Suryanarayanan, V., & Theodoropoulos, G. (2013). Synchronised Range Queries in Distributed Simulations of Multi-Agent Systems. ACM Transactions on Modeling and Computer Simulation, 23(4), Article 25. https://doi.org/10.1145/2517449

Range queries are an increasingly important associative form of data access encountered in different computational environments including peer-to-peer systems, wireless communications, database systems, distributed virtual environments, and, more rec... Read More about Synchronised Range Queries in Distributed Simulations of Multi-Agent Systems.