An Active Reliable Multicast Framework for the Grids

Computational Grids are foreseen to be one of the most critical yet challenging technologies to meet the exponentially growing demands for high-performance computing in a large variety of scientific disciplines. Most of these grid applications imply multiple participants and in many cases make an intensive usage of data distribution and collective opertaions. In this paper, we propose a multicast framework consisting of an active reliable protocol with specialized active services located at the edges of the core network for providing low-latency and low-overhead multicast transfers on computational grid

Group size estimation for hybrid satellite/terrestrial reliable multicast

This paper addresses the problem of group size estimation for hybrid satellite/terrestrial multipoint communications. Estimators based on the maximum likelihood principle are investigated. These estimators assume that a Nack suppression mechanism is implemented at transport layer. The performance of these estimators is studied theoretically and via simulations. The integration of an appropriate group size estimator in a transport mechanism is finally considered

Fly-By-Wireless for Next Generation Aircraft: Challenges and Potential solutions

”Fly-By-Wireless” paradigm based on wireless connectivity in aircraft has the potential to improve efficiency and flexibility, while reducing weight, fuel consumption and maintenance costs. In this paper, first, the opportunities and challenges for wireless technologies in safety-critical avionics context are discussed. Then, the assessment of such technologies versus avionics requirements is provided in order to select the most appropriate one for a wireless aircraft application. As a result, the design of a Wireless Avionics Network based on Ultra WideBand technology is investigated, considering the issues of determinism, reliability and security

Designing application software in wide area network settings

Progress in methodologies for developing robust local area network software has not been matched by similar results for wide area settings. The design of application software spanning multiple local area environments is examined. For important classes of applications, simple design techniques are presented that yield fault tolerant wide area programs. An implementation of these techniques as a set of tools for use within the ISIS system is described

Active Reliable Multicast Strategies for Internet-based Grid Computing Infrastructures

Reliable multicast requires that all packets are safely delivered to the destinations. Such communication patterns are in-tensively used in the so-called grid computing infrastructure where many computing resources are spread over the Internet to offer to the users the access to a huge amount of computational power. However, meeting the objectives of reliable multicast is not an easy task and this paper presents active solutions that aim to reduce the end-to-end latency and to increase the achievable throughput of reliable multicast protocols for grid computing over the Internet. More specifically, the performances of several active mechanisms such as NACK aggregation and subcasting are investigated