between computers, and a resulting paradigm shift from centralized to highly distributed systems. With massive scale also comes massive instability, as node and link failures become the norm rather than the exception. For such highly volatile systems, decentralized gossip-based protocols

Abstract. Most recommendation systems employ variations of Collaborative Filtering (CF) for formulating suggestions of items relevant to users ’ interests. However, CF requires expensive computations that grow polynomially with the number of users and items in the database. Methods proposed

-speed network combines incremental scalability, high availability and low cost [Fox 97]. This is particularly true for parallel and distributed computing [Sens 97], file systems [Anderson 96], and recently Internet-based services, such as WWW servers [Pai 98] or Email [Saito 98]. In order to make progress

Wireless sensor network applications, similarly to other distributed systems, often require a scalable time synchronization service enabling data consistency and coordination. This paper introduces the robust Flooding Time Synchronization Protocol (FTSP), especially tailored for applications

leverages proven network technologies, already available at low cost in high-speed hardware implementations, to build a scalable and reliable network architecture. As a result, VL networks can be deployed today, and we have built a working prototype. We evaluate the merits of the VL design using

Kargus, a highly-scalable software-based IDS that exploits the full potential of commodity computing hardware. First, Kargus batch processes incoming packets at network cards and achieves up to 40 Gbps input rate even for minimum-sized packets. Second, it exploits high processing parallelism by balancing the

Conventional resource management systems use a system model to describe resources and a centralized scheduler to control their allocation. We argue that this paradigm does not adapt well to distributed systems, particularly those built to support high-throughput computing. Obstacles include

This paper describes Transis, a communication sub-system for high availability. Transis is a transport layer package that supports a variety of reliable multicast message passing services between processors. It provides highly tuned multicast and control services for scalable systems with arbitrary

Cassandra is a distributed storage system for managing very large amounts of structured data spread out across many commodity servers, while providing highly available service with no single point of failure. Cassandra aims to run on top of an infrastructure of hundreds of nodes (possibly spread

The design of tractable Description Logics, like EL [1], DL-Lite [2], and RL [5] have spurred the design and implementation of highly scalable systems such as OWLim, Oracle’s Semantic Graph, and more. The attractive properties of the these systems have in many occasions led application developers