Université de Neuchâtel

Simulation of Search and Distribution Methods for Jobs in a WEB Operating System (WOS)

Unger, Herwig ; Kropf, Peter ; Babin, Gilbert ; Böhme, Thomas

In: High Performance Computing Symposium 98, 2008, p. 253-259

Internet or WEB computing concepts, such as the Web Operating System (WOS™), require suitable methods for finding the most effective hardware and software environment for an application execution on the network. We present an efficient search strategy and show that the resulting communication load penalty is well acceptable while preventing the network from being flooded by administrative...

Université de Neuchâtel

Application layer traffic analysis of a Peer-to-Peer system

Tutsch, Dietmar ; Babin, Gilbert ; Kropf, Peter

In: IEEE Internet Computing, 2008, vol. 12, no. 5, p. 70-77

Self-similar or multifractal behavior has been observed for LAN and Internet WAN (backbone) traffic. Investigations about this kind of behavior for application level protocols are rarely found because sessions or even applications are usually too short to be characterized in this direction. Only Telnet and FTP were examined so far. This paper analyzes the traffic shape of Peer-to-Peer (P2P)...

Université de Neuchâtel

Réduction des besoins en communication des systèmes objets distribués utilisant CORBA

Kropf, Peter ; Babin, Gilbert ; Hulot, Alexandre

In: Colloque International sur les Nouvelles Technologies de la Répartition (NOTERE'98), 1999, p. 73-84

CORBA a été conçu en supposant que le réseau peut toujours suffire à la demande en communication. Ce n'est cependant pas toujours le cas. En particulier, on notera le cas des Systèmes de Commandement et Contrôle (SCC) utilisant CORBA pour la communication entre sous-systèmes distribués. Les SCC doivent garantir la transmission des données, même dans les situations extrêmes où les...

Université de Neuchâtel

Towards Electronic Marketplaces: A Progress Report

Babin, Gilbert ; Crainic, Teodor Gabriel ; Gendreau, Michel ; Keller, Rudolf K. ; Kropf, Peter ; Robert, Jacques

In: 4th International Conference on Electronic Commerce Research (ICECR-4), 2001, p. 1-24

Market design is becoming a very important research topic in the context of the electronic economy. Two factors explain this trend: (1) the creation of new markets to facilitate deregulation (telecommunication frequencies, electric power, etc.) and (2) the emergence of strategic analysis and of experimental economics. E-commerce tools will contribute to the emergence of more structured...

Université de Neuchâtel

Simulation of communities of nodes in a wide area distributed system

Yuen, Saiho ; Kropf, Peter ; Unger, Herwig ; Babin, Gilbert

In: 4th EUROSIM Congress, 2001, p. 1-6

The complex structure of the Web requires decentralised, adaptive mechanisms efficiently providing access to local and global capacities. To facilitate the development of such mechanisms, it seems to be reasonable to build clusters or grids of machines with similar structures and interests. In such a manner, communities of machines can be built. In a community, every machine contributes to the...

Université de Neuchâtel

A dynamically configurable environment for high performance computing

Abdennadher, Nabil ; Babin, Gilbert ; Kropf, Peter ; Kuonen, Pierre

In: Advanced Simulation Technologies Conference (ASTC), 2000, p. 236-241

Current tools available for high performance computing require that all the computing nodes used in a parallel execution be known in advance: the execution environment must know where the different "chunks" of programs will be executed, and each computer involved in the execution must be properly configured. In this paper, we describe how the Web Operating System (WOS™) environment may be used...

Université de Neuchâtel

Resource Warehouses; a Distributed Information Warehouse Infrastructure

Khoury, Simon ; Kropf, Peter ; Babin, Gilbert

In: Advanced Simulation Technologies Conference (ASTC), 2002, p. 239-244

This paper presents work related to the design of distributed systems, which is useful for emerging Internet applications. We propose algorithms for searching and managing distributed information about resources and services using locally available warehouses. The concept of warehouses has been introduced in the Web Operating System (WOS) (Kropf 1999). Warehouses have the ability to decide which...

Université de Neuchâtel

Two-Level Communication Protocol for a Web Operating System (WOS)

Babin, Gilbert ; Kropf, Peter ; Unger, Herwig

In: Euromicro Workshop on Network Computing, 1998, p. 939-944

The World-Wide Web consists not only of informational, but also computational resources. However, these resources, especially computational ones are underutilized. One characteristic of theWeb is its ever changing structure; for instance, nodes are dynamically added and removed. This makes it difficult, if not impossible, to draw a complete and accurate picture of available resources. We consider...

Université de Neuchâtel

WOS: an Internet Computing Environment

Kropf, Peter ; Unger, Herwig ; Babin, Gilbert

In: Workshop on Ubiquitous Computing, IEEE International Conference on Parallel Architecture and Compilation Techniques, 2000, p. 1422-1430

Given the current development of the Internet, the Web, mobile communications and services, we are clearly head- ing towards an era of widely integrated ubiquitous services sharing some kind of global operating system. This arti- cle describes the idea, the objectives and the current state of the development of the WOS-project. The Web Operat- ing System (WOS") consists of a series of versioned...

Université de Neuchâtel

A WOS-based solution for high performance computing

Abdennadher, Nabil ; Babin, Gilbert ; Kropf, Peter

In: 1st IEEE/ACM International Symposium on Cluster Computing and the Grid, 2001, p. 568-573

Most of the development environments for high performance parallel applications require that all the computing modules and resources be known in advance. The execution environment must know where the different program modules will be executed, and must properly configure each computer involved in the execution. We describe how the Web Operating System (WOSTM) environment may be used to...