Obiettivo Performance-critical applications typically involve manipulation of large, sparse discrete data objects. One of the major causes of low performance for these applications is the hardware memory organisation in present-day high-performance computers. Progress towards the general applicability of high-performance computing depends upon the removal of this memory performance barrier for the class of sparse computations. Hence sparse computations and hardware memory architecture form the main technical themes of the APPARC project.High performance computing (HPC) is a critical technology for future economic growth. Technical progress in HPC has been rapid only in a few application areas. Unfortunately, a large and important class of applications is not yet amenable to high performance execution, due to a mismatch with currently available techniques at all levels of the computational problem solving process. This class of computations can be referred to as performance critical applications. It requires a concerted interdisciplinary research effort to break this barrier.Some of the major achievements so far are:the definition of cache performance models which are specifically targeted for sparse computations and do not rely on simulations;a comprehensive analysis of data locality optimizations for optimizing compilers;the design of special hardware support to enable out of order memory accesses which relieve memory conflicts;a preliminary definition of a level of abstraction for sparse computations, which enables compiler optimizations to be performed for sparse computations.APPROACH AND METHODS The development of computational solutions to performance-critical applications embraces many different levels of abstraction, from mathematical modelling of the application, through algorithm and software development, to hardware implementation. Thus tackling the two project themes is no simple matter: the interaction between the applications and the memory architecture affects all levels of the problem-solving process. Consequently APPARC studies the two themes across eight interrelated enabling areas: performance-critical applications, parallel algorithms, problem-solving environments, performance modelling and evaluation, high-level languages, compiler design, operating systems, and hardware architecture. POTENTIAL The research groups involved in the APPARC proposal have considerable expertise, spanning all eight enabling areas. They also have strong links with leading research groups elsewhere in Europe and around the world. They are committed to collaboration in the interdisciplinary mode that will be necessary for APPARC research to succeed, and an extensive programme of workshops and exchange of personnel is planned. The APPARC group intends to interact strongly with the industrial community by firstly gathering information on the real computing challenges that industry is facing, and secondly, by disseminating research results to high-performance computer manufacturers and users via summer schools, advanced training courses and on-site visits. Campo scientifico natural sciencescomputer and information sciencessoftwaresoftware applicationssystem softwareoperating systemsnatural sciencescomputer and information sciencessoftwaresoftware developmentengineering and technologyelectrical engineering, electronic engineering, information engineeringelectronic engineeringcomputer hardwaresupercomputersnatural sciencesmathematicsapplied mathematicsmathematical model Programma(i) FP3-ESPRIT 3 - Specific research and technological development programme (EEC) in the field of information technologies, 1990-1994 Argomento(i) Data not available Invito a presentare proposte Data not available Meccanismo di finanziamento Data not available Coordinatore RIJKS UNIVERSITEIT LEIDEN Contributo UE Nessun dato Indirizzo NIELS BOHRWEG 1, 9512 2333 CA/ 2 LEIDEN Paesi Bassi Mostra sulla mappa Costo totale Nessun dato Partecipanti (8) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto FORSCHUNGSZENTRUM JUELICH GMBH Germania Contributo UE Nessun dato Indirizzo WILHELM JOHNEN STRASSE 52425 JUELICH Mostra sulla mappa Collegamenti Sito web Opens in new window Costo totale Nessun dato Office National d'Études et de Recherches Aérospatiales (ONERA) Francia Contributo UE Nessun dato Indirizzo 29 avenue de la Division Leclerc 92322 Châtillon Mostra sulla mappa Costo totale Nessun dato Queen's University of Belfast Regno Unito Contributo UE Nessun dato Indirizzo Stranmillis Road BT9 5AH Belfast Mostra sulla mappa Costo totale Nessun dato UNI-C Danimarca Contributo UE Nessun dato Indirizzo VERMUNDSGADE, 5 2100 COPENHAGEN Mostra sulla mappa Costo totale Nessun dato UNIVERSITAT POLITECNICA DE CATALUNYA Spagna Contributo UE Nessun dato Indirizzo DIAGONAL 647 08028 BARCELONA Mostra sulla mappa Costo totale Nessun dato UNIVERSITE DE RENNES I Francia Contributo UE Nessun dato Indirizzo CAMPUS DE BEAULIEU 35042 RENNES Mostra sulla mappa Costo totale Nessun dato UNIVERSITY OF PATRAS Grecia Contributo UE Nessun dato Indirizzo PATRAS Mostra sulla mappa Costo totale Nessun dato University of Manchester Regno Unito Contributo UE Nessun dato Indirizzo Oxford Road M13 9PL Manchester Mostra sulla mappa Costo totale Nessun dato