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In 1993, a list of the top 500 supercomputer sites worldwide was made available for the first time. Since then, the Top500 list has been published twice a year. The list allows a detailed and well-founded analysis of the state of high-performance computing (HPC). This article summarizes the recent trends in application areas of HPC systems, focusing on the increase in industrial installations and...
Parallelization of two approaches used for identification of faults in blades of a gas turbine is presented. The first approach, termed as direct simulation, is aiming to populate a fault diagnosis database allowing early identification of faults. The second approach, termed as the inverse one, gives a more focused solution to fault identification, by using the direct approach in an iterative way...
HIPERCLASS is a project of the European ESPRIT Special Action named CAPRI. This Special Action is aimed at the diffusion of the Parallel Computing among the italian industries. In such environment, the project HIPERCLASS is directed to the porting of the image treatment and defect classification of a surface inspection pilot system for steel rolled strip developed by CSM, from the hardwired implementation...
The paper describes an HPCN application in the Structural Reliability Engineering field. A software environment has been developed for managing processes in a parallel computing environment both on distributed and shared architectures. To better enhance the performances, a finite element code, that is the computing kernel, has been parallelized applying partly innovative techniques. The whole computational...
We have developed a Modelling and Simulation platform for technical evaluation of Electronic Toll Collection on Motor Highways. This platform is used in a project of the Dutch government to assess the technical feasibility of Toll Collection systems proposed by industry. Motivated by this work we introduce the concept of High Performance Discrete Event Simulations to evaluate the performance of Complex...
In this paper we present an overview of the HPCN tool developed in the framework of the CAPRI's subproject HIPERCOMBATS (Esprit — HPCN contract no EP-9602 CAPRI). The acronym HIPERCOMBATS states for HIgh PERformance COmputing in Multi-Body Analyis for Two-wheeler Suspension design. This tool aims at helping the design of new suspensions for two wheeler vehicles by performing parametric simulations...
While it has long been suggested to use parallelism to boost the performances of telecommunication switching equipment, existing solutions do not easily scale up to very high throughput unless dedicated hardware is used. In this paper, we investigate how off-the-shelf distributed computers could still be used along with relevant software architectures to build truly scalable telecommunication switching...
The Artemis subproject, in the framework of the UE Capri project, deals with porting on parallel architectures of a Method of Moment (MoM) code for electromagnetic design and hardening of telecommunication centres against the effects of lightning strokes. After a preliminary stage of the work during which QR and LU algorithms for large complex matrix inversion were implemented both on Alenia's Quadrics...
The objective of the European project STORMS is to develop a software tool to be used for the design and the planning of the UMTS network. In this context the ParFlow method permits the simulation of outdoor radio wave propagation in urban environment, modeling the physical system in terms of the motion of fictitious microscopic particles over a lattice. This paper gives an overview of the ParFlow...
Throughout Europe there currently exists numerous High Performance Computing sites housing a variety of computing platforms encorporating the spectrum of vendors and topologies. The potential for their interconnection with high speed data links is a realistic possibility and essential for the future of HPCN and any vision of “information highways” or “information societies” that are now being imaged...
This paper presents the on-going work concerning the definition of a standardised use of Virtual Reality in a telemedical information society. It presents the collaboration of the EUROMED project and the usage of the VRASP over the WWW to perform Virtual Assisted Surgery. The aim of the EUROMED project is to standardise the use of the WWW for advanced medical image diagnosis in a telemedical information...
We propose new hybrid fractal/wavelet image compression algorithms which combine both schemes in the spatial and the transform domain. Whereas traditional fractal compression algorithms suffer from enormous execution times, the proposed algorithms exhibit a smaller and more predictable computational comlexity. We propose strategies for executing these algorithms on MIMD high performance computers...
A parallel version of the phase-based algorithm for disparity estimation in stereo image pairs for the reconstruction of the third dimension is presented. The algorithm is implemented on the Quadrics massively parallel SIMD machine. An analysis of performance as a function of image size and processors number is given. The obtained processing times are compared with two other HW architectures both...
This paper describes and experimentally evaluates three adaptive spatial subdivision heuristics for sort-first parallel graphics rendering on distributed-memory multicomputers. In sort-first rendering, imagespace, or screen, is divided into regions. Each processor is assigned one or multiple regions to render. Primitives in the scene are redistributed among the processors according to region assignments...
The 3D Object MEdiator (3DOME3) offers two services for handling 3D models: a modelshop and a renderfarm. These services can be consulted through the Internet. The modelshop meets the demands for brokerage of geometric descriptions of 3D models. People who create geometric models of objects can supply their models to the modelshop and 3DOME will offer them to potential customers. People who need models...
This paper reports on the remote use of MIMD parallel machines for compute-intensive visualisation tasks. As an alternative to dedicated rendering hardware, a system using conventional desktop machines connected to a visualisation server permits sharing of the resource between several users, and/or sites. The design of a parallel rendering system should consider not only how to achieve efficient parallel...
A recent trend in many organizations is the increasing acceptance of teleworking. The so-called groupware applications play an important role in the field of teleworking. These applications, based on networking, support collaboration of geographically remote people by means of advanced computer technologies. Collaborative Virtual Environments can be used for the development of groupware applications...
We present the parallelization of an algorithm used to simulate images obtained with an Atomic Force Microscope. We use the standard parallel programming environment PVM so that the parallelization be architecture independent. We propose different algorithms: with or without large transfers of data between master and slaves and with or without load balancing. We compare execution run times on three...
The set of eight nonlinear partial differential equations of magnetohydrodynamics (MHD) is used for time dependent simulations of three-dimensional (3D) fluid flow in a magnetic field. A data parallel code is presented, which integrates the MHD equations in cylindrical geometry, combining a semi-implicit time integration with a pseudo-spectral treatment of the poloidal and longitudinal directions...
In this paper the design and validation of a high performance simulation is discussed that is of critical value to the feasibility study of the GRAIL project, the aim of which is to build a gravitational radiation antenna. Two relatively simple simulation models of this antenna are shown to be too restrictive for our purposes, necessitating the development of a simulation program that utilizes an...
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