: There is an increasing number of distributed applications, some of them fault-tolerant, and it has been recognized that its construction may benefit from the existence of reliable broadcast protocols. Reliable broadcasting has deserved considerable attention recently. Some systems are clock-driven, exhibiting tight synchrony: they rely on clock synchronization and space redundancy. Others, like the AMp, an atomic multicast protocol for local area networks, are clock-less. In application-independent systems, most of the time domain requirements are not of the hard real-time kind -- which clock-driven protocols are most suited for -- but rather of the on-line, or soft real-time kind. To encourage utilization of reliable broadcast protocols in such applications, it is mandatory that benefits in quality of service are not considered too costly in performance. Clock-less protocols provide an answer to this requirement, since they can trade synchronism for fast termination. This paper deal...

Abstract-This paper presents an analysis of switches in high speed LAN. In order to support our analysis, this paper provides both analytical and mathematical models. The proposed analytical model is based on a finite state Markov model developed for analyzing networks with virtual channels in a

: This paper presents recent results concerning the realization of HLA RTIs in high-speed LAN environments. Specifically, the UK-RTI and a second, simplified RTI implementation were realized on a cluster of Sun workstations using Myrinet, a gigabit, low-latency interconnection switch developed

The storage capacity of optical disks demands higher speed of a network when users copy images of those disks from one host to another. In addition to speed of the network, other bottlenecks may exist in the path between two hosts. The speed of the network depends on a cabling as well as interfaces

This report addresses issues we faced in our on-going work at the Radiology Research Laboratory. These issues are related to communication protocols for very high speed local area networks in a medical imaging environment. In this report we describe the characteristic of the application, solutions

of these new architectures can be very close to those obtained on state-of-the art parallel computers. Keywords: High-speed LANs, Parallel and Distributed Applications Submitted to: Topic 8, High-Performance Computing and Applications. 1 New technologies for parallel and distributed applications As soon

ATOMIC is an inexpensive O(gigabit) speed LAN built by USC/ISI. It is based upon Mosaic technology developed for fine-grain, message-passing, massively parallel computation. Each Mosaic processor is capable of routing variable length packets, while providing added value through simultaneous

In this paper, we propose a dynamic delay-bounded multicasting routing algorithm (DDMR) that satisfies the network conditions of delay constraints, cost minimization and can adapt to a dynamically changing network condition of adding and deleting a node from the group for the high-speed LAN

This paper presents a new, ¨hybrid deposit ¨model for low overhead communication wherein the sender directly deposits messages into the destination user-level memory. The destination address is a function of both sender state and destination state. The motivation is to increase the sender´s role in communication in order to simplify the destination´s role and thus enable fast, low-cost communication interfaces. The model separates data delivery from synchronization so as to enable the optimization of simple data delivery while leaving more difficult synchronization to other mechanisms. With hardware support, the hybrid deposit model looks promising for applications in parallel, distributed, and real-time computing.

High-speed switches play an important role in building switched LANs. Among different techniques used in switch design, cut-through switching promises short latency delivery and thus is well suited to distributed /parallel applications. The back pressure flow control of cut-through switching also