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UNIPOLLS, nuovo prodotto CILEA per la gestione delle elezioni delle rappresentanze studentesche di Ateneo
No full textThe paper presents the UNIPOLLS software system carried out by CILEA for administering activities and products dealing with student elections within each university college.L'articolo presenta il sistema software UNIPOLLS realizzato dal CILEA per la gestione delle attività e dei prodotti inerenti le elezioni delle rappresentanze studentesche in seno agli organi universitari
NEMO: un ambiente object-oriented per problemi di meccanica del continuo
No full textNEMO (Numerical Engine for Multiphysics Operators) is a support library designed to build applications in the field of continuum mechanics; its basic design principle is to enable an application structure that closely follows the structure of the differential equations describing the problem on hand, exploiting the availability of “objects” representing fields and equations, and the differential operators acting on them, normally assuming a finite volume discretization scheme. The library makes use of consolidated and efficient parallel computing libraries for internal subtasks, employing state of the art numerical techniques; it is also capable of interfacing with industry standard storage formats, such as CGNS and GAMBIT, and visualization tools
Effetto della rugosità di parete su flussi turbolenti
No full textDirect numerical simulations of a turbulent channel flow with 2D wedges of randomheight on the bottom wall have been performed. In addition, two other simulationshave been carried out to assess the effect of the geometry on the overlying flow. In thefirst simulation, the four smallest elements were removed while in the other a uniformdistribution of wedges with the same area was used. Two Reynolds numbers were studied,Reb=2500 and Reb =5000 which correspond in case of smooth walls to Ret=180 and300 respectively. Roughness on the wall induces separated regions, the reattachmentoccurring on the walls of the wedges or on the bottom walls. The pressure gradients onthe walls increase the ejections and inrushes towards the wall. As a consequence theflow is more isotropic. The mechanism inducing an improved isotropy has been explainedin the paper by spectra and budgets of Reynolds stress.The comparison of the 3 surfaces has shown that near the wall, the uniformly distributedroughness represents only a poor approximation of the surface with wedges ofrandom height. The Reynolds stresses, pressure distribution and spectra on the modifiedwall agree well with those on the random surface.Pressure distribution, Reynolds stress budgets, spectra, and turbulence intensitieshave been compared to identify the geometrical parameters which can define a randomrough wall. Energy spectra show the pitch to height ratio of the largest elements to bethe more appropriate.The mechanism leading to an increase of isotropy near the rough surface has beenexplained through the budgets of turbulence intensities.Numerical simulations of turbulent channels have been exploited thanks to CASPUR,which provided its high performance computing infrastructure
Il progetto EUPHORIC
No full textThe EUPHORIC project (EUropean Public Health Outcome Research and Indicators Collection)was funded by the European Commission, Directorate General for Health andConsumers, under the Program of Community Action in the Field of Public Health (2003–2008). The project focused on the strand of action “to improve information and knowledgefor the development of public health”.The EUPHORIC project aimed to define a common set of outcome indicators in someclinically relevant areas and to validate them among the participating European countries.The development of health indicators, as well as the collection and exchange of informationwithin and among Member States are relevant activities necessary for theimplementation of a public health monitoring system. Monitoring the efficiency andefficacy of different health systems at Community level enables the Commission andMember States to set appropriate strategies, policies and actions in order to guaranteethe quality of public healthcare.• The project was divided into three phases:• Survey: to make an inventory of outcome indicators in participating countries;• Pilot: to test selected indicators in participating countries;• Dissemination: to make results available on a web site.The project was guided by a network of 15 institutions from 10 European countriesand Israel. The network played a crucial role in the development of a joint effort toprovide a valuable source of information. The Istituto Superiore di Sanità acted as coordinationcentre and CASPUR as technological partner providing technical consultancyand support for both the design and the implementation of the website together withthe deployment and the housing of the site itself
Il Portale della Moda Italiana per il Fashion Institute of Milan
No full textCILEA is involved in the Flagship Project Fashion Institute of Milan, sponsored by Comune di Milano, and our aim is to realize the web portal about Italian Fashion. Ideas and projects of the various actors were proposed during the workshop “Milano & Moda”, organized by Fondazione IULM, with special guest Mayoress Letizia Moratti.CILEA è coinvolto nel Flagship Project Fashion Institute of Milan, patrocinato dal Comune di Milano, per la realizzazione del Portale della Moda Italiana. Le idee e i progetti dei diversi partner e istituzioni sono stati presentati durante il workshop “Milano & Moda”, organizzato dalla Fondazione IULM, con la partecipazione del sindaco Letizia Moratti
Progetto emodinamica computazionale @CILEA
No full textIn this article the use of computational models for haemodynamics problems is introduced highlighting the scien¬tific network concerning this topic in which the High Performance Computing group of CILEA is involved.In questo articolo viene introdotta la modellazione al calcolatore di problemi di emodinamica al fine di illustrare le potenzialità offerte dall’ampio circuito di collaborazioni scientifiche su questo tema in cui la Sezione Calcolo ad Alte Prestazioni e Applica¬zioni Scientifiche e Ingegneristiche del CILEA è coinvolto
L'open source strumento di efficienza. L'esperienza del modulo SUR+OA: resoconto di un anno di attività con la community di DSpace
No full textCILEA adopted open source software to provide services in digital asset management systems for the research environment. Advantages are safe, stable and portable code, sharing opportunities, more services. CILEA has a significant role in contributing to the DSpace community and the experience obtained so far is available to its partners.CILEA ha adottato software open source per l'offerta di servizi nell'ambito dei digital asset management systems per l'ambiente della ricerca, con vantaggi in termini di sicurezza, stabilità, portabilità, condivisione e servizi. In particolare ha assunto una posizione rilevante nella community di DSpace, portando contributi significativi e maturando un'esperienza importante da mettere a disposizione dei propri partner
CASPUR HPC Grant 2009: risultati e prospettive
No full textWith the aim of promoting the use of high-performance computing in scientific research, CASPUR has periodically invited researchers from universities, public and private research institutions, to submit scientific projects for free allocation of computing resources. The acquisition of the new computer facility, named 'Matrix' (an HPC cluster with 2640 core, interconnected in InfiniBand technology), has enabled CASPUR HPC Department to expand the computer resources offered to the Italian and international scientific community. The strategy of the 2009 HPC grants call is twofold: on the one hand to involve a very large user base, distributed over the whole national territory, i.e. beyond the limits of the universities member of the CASPUR consortium; and, on the other hand to give significant amount of resources to few projects, very ambitious from both scientific and computational point of view. Therefore the 2009 HPC grant initiative, named CASPUR HPC Grant 2009, is divided into two calls: Standard HPC Grant 2009, for projects requiring up to 80,000 hours/core over 9 months, and Competitive HPC Grant 2009, for projects requiring up to 1,000,000 hours/core over 18 months. 136 projects (15 Competitive) have been approved and more than 14,000,000hours/core allocated. After the success of HPC Grant 2009 initiative, CASPUR will replicate and improve its offer of HPC Grant, increasing, if possible, the size and performance of its HPC systems available to their users
L'acquisizione di sistemi HPC: un caso ed alcune note generali
No full textAt the end of 2008, CASPUR has released to its users a new HPC system. The new system,built-up by ClusterVision, has 258 nodes with two quad-core AMD Opteron processors,for a total of 2.064 cores. Nodes are linked through a broad band and low latencyInfiniband switch and have a total of 4.5Tbyte of dynamic memory. The system delivers17.3 TFlops (Rpeak) and 13.6 TFlops (Rmax). Performances and total core-hours peryear have grown 15 and 12 times respectively whilst cost/GFlops has declined to 1/40of the previous one. According to CASPUR, the process adopted to acquire the systemhas been a best practice, with respect of technology and economics results, suitablefor being used in future procurements. The article intends to illustrate such process, underliningmain considerations and motivations in terms of technology, innovation, userneeds adopted to define kind and size of the system as well as the parameters usedto perform the choice. Some more is reported about world-wide HPC innovation scenario,stressing differences between HPC procurement in Europe and in the USA. Eventually,a couple of draft proposals to improve the effectiveness of overall HPCinvestments in Italy
La bioinformatica come strumento per lo studio dell'espressione genica durante lo sviluppo embrionale
No full textRegulation of gene expression during embryogenesis and development is a crucial cluefor a normal anatomy and physiology [1]. The combined use of experimental highthroughputmethods, such as DNA microarrays, and bioinformatic methods has innovatedthe analysis of temporal patterns of gene expression in embryos. Microarray analysis, infact, provides a large amount of data -at molecular level- that once acquired, must befunctionally integrated in order to find common patterns within a defined group of biologicalsamples.Through the use of cDNA microarrays, investigators can measure mRNA [1] levels forthousands of genes simultaneously, rather than one gene at a time. In fact, DNA microarraysare constituted by small glass or filter matrix that contain arrays of DNA sequences(each highly specific to a single gene) and by means hybridization of fluorescentcDNA, they are capable of simultaneously quantifying the expression of thousands ofgenes in a single experiment. The results of these experiments are spots whose brightnessvaries from gene to gene corresponding to the transcriptional activity of the examinedgenes (Fig. 1). This analysis requires sophisticated bioinformatics tool [2]. Aninterestingly application of DNA microarrays is the analysis of mRNA expression (suchas the transcriptome) in embryos. A systematic genomic approach to analyze globalgene expression patterns and functions during embryogenesis has recently been nameddevelopmental genomics or embryogenomics [3].Functional genomics of embryo development requires the integration of informationfrom genome sequence and structure, gene and protein expression, and metabolite profileswith knowledge databases by using computational and bioinformatics tools [1,4]