Enabling the P2P JXTA Platform for High-Performance Networking Grid Infrastructures

Abstract. As grid sizes increase, the need for self-organization and dynamic reconfigurations is becoming more and more important, and therefore the convergence of grid computing and Peer-to-Peer (P2P) computing seems natural. Grid infrastructures are generally available as a federation of SAN-based clusters interconnected by high-bandwidth WANs. However, P2P systems are usually running on the Internet, with a non hierarchical network topology, which may raise the issue of the adequacy of the P2P communication mechanisms on grid infrastructures. This paper evaluates the communication performance of the JXTA P2P platform over high-performance SANs and WANs, for both J2SE and C bindings. We analyze these results and we evaluate solutions able to improve the performance of JXTA on such networking grid infrastructures. Key words: high performance networking, grid computing, P2P, JXTA. 1 Using P2P techniques to build grids Nowadays, scientific applications require more and more resources, such as processors, storage devices, network links, etc. Grid computing provides an answer to this growin

Improvement of JXTA Protocols for Supporting Reliable Distributed Applications in P2P Systems

In any distributed application, the communication between the distributed processes/nodes of the distributed systems is essential for both reliability and efficiency matters. In this work we address this issue for distributed applications based on JXTA protocols. After a careful examination of the current version of JXTA protocols, we observed the need for improving the original JXTA protocols, such as pipe services, to ensure reliable communication between peer nodes and the discovery and presence service to increase the performance of the applications. The re-implemented protocols have been validated in practice by deploying a P2P network using nodes of PlanetLab platform and testing each of the extended protocols using this real P2P network

A Bluetooth-based JXME infrastructure ⋆

Abstract. Over the last years, research efforts have led the way to embed computation into the environment. Much attention is drawn to technologies supporting dynamicity and mobility over small devices which can follow the user anytime, anywhere. The Bluetooth standard particularly fits this idea, by providing a versatile and flexible wireless network technology with low power consumption. In this paper, we describe an implementation of a novel framework named JXBT (JXME over Bluetooth), which allows the JXME infrastructure to use Bluetooth as the communication channel. By exploiting the JXME functionalities we can overcome Bluetooth limitations, such as the maximum number of interconnectable devices (7 according to the Bluetooth standard) and the maximum transmission range (10 or 100 meters depending on the version). To test the lightness of JXBT, we designed and evaluated BlueIRC, an application running on top of JXBT. This application enables the set up of a chat among Bluetooth-enabled mobile devices, without requiring them to be within transmission range.