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2007 Other Unknown

GridCOMP: GRID programming with Components: an advanced component platform for an effective invisible Grid - FP6-IST 034442
Dazzi P., Laforenza D., Tonellotto N.
Not abstract available

See at: CNR People


2009 Conference object Unknown

Peer-to-Peer clustering of Web-browsing users
Dazzi P., Felber P., Le Bao A., Leonini L., Mordacchini M., Perego R., Rajman M., Rivière É.
Source: 7th Workshop on Large-Scale Distributed Systems for Information Retrieval, Boston, USA, 2009

See at: CNR People


2007 Other Unknown

CoreGRID: European research network on foundations, software infrastructures and applications for large scale distributed, grid and peer-to-peer technologies - FP6-IST 004265
Baraglia R., Capannini G., Dazzi P., Laforenza D., Lucchese C., Orlando S., Perego R., Tonellotto N.
Not abstract available

See at: CNR People


2015 Article Unknown

Layered thinking in vertex centric computations
Carlini E., Dazzi P., Lulli A., Ricci L.
The Telos framework eases the transition to a vertex-centric approach in the high performance and distributed programming of BigData analytics targeting large graphs. Telos represents a paradigm shift, from "think like a vertex" to "think like a network".Source: ERCIM news 102 (2015): 31–32.

See at: ercim-news.ercim.eu | CNR People


2006 Article Unknown

Joint structured/non structured parallelism exploitation through data flow
Dazzi P., Danelutto M.
Structured parallel programming promises to raise the level of abstraction p erceived by programmers when implementing parallel applications. In the meanwhile, however, it restricts the freedom of programmers to implement arbitrary parallelism exploitation patterns. In this work we discuss a data flow implementation methodology for skeleton based structured parallel programming environments that easily integrates arbitrary, user-defined parallelism exploitation patterns while preserving most of the b enefits typical of structured parallel programming models.Source: Lecture notes in computer science 3992 (2006): 937–944.

See at: CNR People


2007 Conference object Unknown

Workflows on top of a macro data flow interpreter exploiting aspects
Danelutto M., Dazzi P.
We describe how aspect oriented programming techniques can be exploited to support the development of workflow-based grid applications. In particular, we use aspects to adapt simple Java workflow code to be executed on top of muskel, our experimental, macro data flow based skeleton programming environment. Aspects are used to extractSource: CoreGRID Workshop on Grid Programming Model, Grid and P2P Systems Architecture, Grid Systems, Tools and Environments, Heraklion, Crete, 12-13 June 2007

See at: CNR People


2010 Other Unknown

FP7 Collaborative project CONTRAIL : Open Computing Inftrastructures for Elastic Services
Coppola M., Dazzi P., Ferrini R., Baraglia R., Perego R., Lombardi S.
The goal of the Contrail project is to design, implement, evaluate and promote an open source system in which resources that belong to different operators are integrated into a single homogeneous Federated Cloud that users can access seamlessly. Contrail will vertically integrate an open-source distributed operating system for autonomous resource management in Infrastructure-as-a-Service environments, and high level services and runtime environments as foundations for Platform-as-a-Service.

See at: CNR People


2007 Report Unknown

Behavioural skeletons for component autonomic management on grids
Dazzi P., Laforenza D., Tonellotto N., Aldinucci M., Campa S., Danelutto M., Kilpatrick P.
We present behavioural skeletons for the CoreGrid Component Model, which are an abstraction aimed at simplifying the development of GCMbased self-management applications. Behavioural skeletons abstract component self-man-agent in component-based design as design patterns abstract class design in classic OO development. As here we just want to introduce the behavioural skeleton framework, emphasis is placed on general skeleton structure rather than on their autonomic management policies.

See at: CNR People


2008 Report Unknown

A formal checklist for self-optimizing strategy-driven priority classification system
Dazzi P., Panciatici A., Pasquali M.
In this paper we identify the fundamental elements needed to make self-optimizing a strategy-driven classification system. The paper presents, using a formal notation, a checklist allowing classification-strategy designers to make autonomous their strategies. The proposed model is evaluated applying it to a real scenario in which a dynamic stream of elements is classified according to QoS constraints. The tests performed point out that the proposed approach can be fruitfully exploited.

See at: CNR People


2008 Report Unknown

Formalization of autonomic heuristics-driven systems
Pasquali M., Dazzi P.
In this paper we show the fundamental elements needed to make autonomous a heuristics-based system. It is made by using a formal notation. The proposed method allows heuristics designers to make autonomous a heuristics by exposing its state and the polytope in which the heuristics works properly. The proposed model was evaluated applying it to a real scenario in which a dynamic stream of batch jobs is classified according to job deadline QoS constraint. The conducted tests point out that the proposed autonomic heuristics can be fruitfully exploited.

See at: CNR People


2013 Report Unknown

ATLAAS-P2P: a two layer network solution for easing the resource discovery process in unstructured networks.
Baraglia R., Dazzi P., Mordacchini M.
ATLAAS-P2P is a two-layered P2P architecture for developing systems providing resource aggregation and approximated discovery in P2P networks. Such systems allow users to search the desired resources by specifying their requirements in a flexible and easy way. From the point of view of resource providers, this system makes available an effective solution supporting providers in being reached by resource requests.

See at: arxiv.org | CNR People


2006 Conference object Unknown

Joint structured/unstructured parallelism exploitation in muskel
Danelutto M., Dazzi P.
Structured parallel programming promises to raise the level of abstraction perceived by programmers when implementing parallel applications. In the meanwhile, however, it restricts the freedom of programmers to implement arbitrary parallelism exploitation patterns. In this work we discuss a data flow implementation methodology for skeleton based structured parallel programming environments that easily integrates arbitrary, user-defined parallelism exploitation patterns while preserving most of the benefits typical of structured parallel programming models. © Springer-Verlag Berlin Heidelberg 2006.Source: ICCS 2006 - Computational Science, pp. 937–944, Reading, UK, May 28-31, 2006
DOI: 10.1007/11758525_124

See at: DOI Resolver | link.springer.com | CNR People


2006 Conference object Unknown

A Java/Jini framework supporting stream parallel computations
Dazzi P., Danelutto M.
JJPF (the Java/Jini Parallel Framework) is a framework that can run stream parallel applications on several parallel-distributed architectures. JJPF is a distributed execution server, actually. It uses JINI to recruit the computational resources needed to compute parallel applications. Parallel applications can be run on JJPF provided they exploit parallelism accordingly to an arbitrary nesting of task farm and pipeline skeletons/patterns. JJPF achieves almost perfect, fully automatic load balancing in the execution of such kind of applications. It also transparently handles any number of node and network faults. Scalability and efficiency results are shown on workstation networks, both with a synthetic (embarrassingly parallel) image processing application and with a real (not embarrassingly parallel) page ranking application.Source: Parallel Computing - ParCo 2005, pp. 681–688, Malaga (Spain), 13-16/09/2005

See at: CNR People


2007 Conference object Unknown

Behavioural skeletons for component autonomic management on grids
Aldinucci M., Campa S., Danelutto M., Dazzi P., Kilpatrick P., Laforenza D., Tonellotto N.
We present behavioural skeletons for the CoreGrid Component Model, which are an abstraction aimed at simplifying the development of GCM-based self- management applications. Behavioural skeletons abstract component self-man- agent in component-based design as design patterns abstract class design in classic OO development. As here we just want to introduce the behavioural skeleton framework, emphasis is placed on general skeleton structure rather than on their autonomic management policies.Source: CoreGRID Workshop on Grid Programming Model, Grid and P2P Systems Architecture, Grid Systems, Tools and Environments, Heraklion, Crete, Greece, 12-13 June 2007

See at: CNR People


2008 Part of book or chapter of book Unknown

Behavioural skeletons for component autonomic management on grids
Dazzi P., Laforenza D., Tonellotto N., Aldinucci M., Campa S., Danelutto M., Kilpatrick P.
We present behavioural skeletons for the CoreGRID Component Model, which are an abstraction aimed at simplifying the development of GCM-based self-management applications. Behavioural skeletons abstract component self-man-agent in component-based design as design patterns abstract class design in classic OO development. As here we just wish to introduce the behavioural skeleton framework, emphasis is placed on general skeleton structure rather than on their autonomic management policies.Source: Making Grids Work, edited by Danelutto Marco, Fragopoulou Paraskevi, Getov Vladimir, pp. 3–15. New York: Springer, 2008
DOI: 10.1007/978-0-387-78448-9_1

See at: DOI Resolver | CNR People | www.springer.com


2008 Part of book or chapter of book Unknown

Self-optimizing classifiers: formalization and design pattern
Dazzi P., Pasquali M., Baraglia R., Panciatici A.
In this paper we propose a design pattern for self-optimizing classification systems, i.e. classifiers able to adapt their behavior to the system changes. First, we provide a formalization of a self-optimizing classifier we use to derive the design pattern. Then, we describe the pattern classes, their interactions, and validate our approach applying the proposed pattern to a real scenario. Finally, to evaluate the proposed solution we compare the behavior of the self-optimizing classifier with a not self-optimizing one. Experimental results demonstrate the approach effectiveness.Source: From Grids to Service and Pervasive Computing, edited by Thierry Priol, Marco Vanneschi, pp. 175–187. New York: Springer, 2008
DOI: 10.1007/978-0-387-09455-7_13

See at: DOI Resolver | portal.acm.org | CNR People


2010 Conference object Unknown

Gossip communities: collaborative filtering through peer to peer overlays (Extended abstract)
Baraglia R., Dazzi P., Mordacchini M., Perego R., Ricci L.
Gossip-based Peer-to-Peer protocols proved to be very efficient for supporting dynamic and complex information exchange among distributed peers. They are useful for building and maintaining the net- work topology itself as well as to support a pervasive diusion of the information injected into the network. In this paper, we propose the general architecture of a system that tries to exploit the collaborative exchange of information between peers in order to build a system able to gather similar users and spread useful suggestions among them.Source: 18th Italian Symposium on Advanced Database Systems, pp. 54–61, Rimini, Italy, 20-23 giugno 2010

See at: CNR People


2010 Other Unknown

FP6 Integrated Project XtreemOs: Building and Promoting a Linux-based Operating System to Support Virtual Organizations for Next Generation Grids
Coppola M., Dazzi P., Lombardi S., Ferrini R.
Funded by the Commission of European Communities Information Society and Media Directorate-General, the overall objective of the XtreemOS project is the design, implementation, evaluation and distribution of an open source Grid operating system (named XtreemOS) with native support for virtual organizations (VO) and capable of running on a wide range of underlying platforms, from clusters to mobiles. The approach proposes is to investigate the construction of a new Grid OS, XtreemOS, based on the existing general purpose OS Linux. A set of system services, extending those found in the traditional Linux, will provide users with all the Grid capabilities associated with current Grid middleware, but fully integrated into the OS

See at: CNR People


2010 Report Unknown

Mendeley Recommender System: Experimental Results
Dazzi P., Mordacchini M.
Mendeley and the HPC Lab of ISTI-CNR collaborate for conceiving, designing and developing a recommender system for scientific papers. Mendeley provided a dataset of about 5,000 users and HPC Lab conceived two architectures for a recommender system. Those architectures were presented in "Collaboration with Mendeley - Research Activity Report" document (hereinafter the "research report"). Starting from those architecture specifications, the HPC Lab implemented a prototype of the recommender system. In particular, the system was developed according to the first of the two architectures. In this document HPC Lab describes the results obtained from the preliminary tests conducted with the recommender system prototype.

See at: CNR People


2012 Conference object Unknown

The CONTRAIL approach to cloud federations.
Coppola M., Dazzi P., Lazouski A., Martinelli F., Mori P., Jensen J., Johnson I., Kershaw P.
The CONTRAIL project proposes a framework for Cloud Federations, that provides users with a single point of access to Cloud resources and relieves them from managing the credentials for access to individual Cloud service providers. The Federation services dynamically broker access to Cloud resources, ensures that the best available resource is selected, and that diverse resources are accessed consistently. This paper presents the CONTRAIL approach to federated identity management, focusing on authentication and authorization. In particular, we present "usage control" extensions to standard authorization frameworks to dynamically address changes in authorization decisions.Source: The International Symposium on Grids and Clouds 2012, pp. 1–14, Academia Sinica, Taipei, Taiwan, February 26 - 2 March 2012
Project(s): CONTRAIL via OpenAIRE

See at: pos.sissa.it | CNR People