Exploració per autor "Torres Viñals, Jordi"
Ara es mostren els items 9-28 de 103
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Adaptive scheduling on power-aware managed data-centers using machine learning
Berral García, Josep Lluís; Gavaldà Mestre, Ricard; Torres Viñals, Jordi (2011)
Report de recerca
Accés obertEnergy-related costs have become one of the major economic factors in IT data-centers, and companies and the research community are currently working on new efficient power-aware resource management strategies, also known ... -
Adaptive scheduling on power-aware managed data-centers using machine learning
Berral García, Josep Lluís; Gavaldà Mestre, Ricard; Torres Viñals, Jordi (IEEE Computer Society Publications, 2011)
Text en actes de congrés
Accés restringit per política de l'editorialEnergy-related costs have become one of the major economic factors in IT data-centers, and companies and the research community are currently working on new efficient power-aware resource management strategies, also known ... -
Aeneas: A tool to enable applications to effectively use non-relational databases
Cugnasco, Cesare; Hernández, Roger; Becerra Fontal, Yolanda; Torres Viñals, Jordi; Ayguadé Parra, Eduard (Elsevier, 2013)
Text en actes de congrés
Accés obertNon-relational databases arise as a solution to solve the scalability problems of relational databases when dealing with big data applications. However, they are highly configurable prone to user decisions that can heavily ... -
Align and distribute-based linear loop transformations
Torres Viñals, Jordi; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José; Valero Cortés, Mateo (Springer, 1993)
Text en actes de congrés
Accés obertIn this paper we generalize the framework of linear loop transformations in the sense that loop alignment is considered as a new component in the transformation process. The aim is to match the structure of loop nests with ... -
ALOJA: a systematic study of Hadoop deployment variables to enable automated characterization of cost-effectiveness
Poggi Mastrokalo, Nicolas; Carrera Pérez, David; Call, Aaron; Mendoza, Sergio; Becerra Fontal, Yolanda; Torres Viñals, Jordi; Ayguadé Parra, Eduard; Gagliardi, Fabrizio; Labarta Mancho, Jesús José; Reinauer, Rob; Vujic, Nikola; Green, Daron; Blakeley, Jose (Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés obertThis article presents the ALOJA project, an initiative to produce mechanisms for an automated characterization of cost-effectiveness of Hadoop deployments and reports its initial results. ALOJA is the latest phase of a ... -
An instrumentation tool for threaded Java application servers
Carrera Pérez, David; Guitart Fernández, Jordi; Torres Viñals, Jordi; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José (Universitat de Lleida, 2002)
Text en actes de congrés
Accés obertRapid development of e-business services has extended the use of application servers on companies. The Java platform has an important presence on this sector because of its portability and development facilities. Java ... -
An integer linear programming representation for data-center power-aware management
Berral García, Josep Lluís; Gavaldà Mestre, Ricard; Torres Viñals, Jordi (2010-11-12)
Report de recerca
Accés obertThis work exposes how to represent a grid data-center based scheduling problem, taking the advantages of the virtualization and consolidation techniques, as a linear integer programming problem including all three mentioned ... -
Automatic query driven data modelling in cassandra
Hernández, Roger; Becerra Fontal, Yolanda; Torres Viñals, Jordi; Ayguadé Parra, Eduard (Elsevier, 2015)
Text en actes de congrés
Accés obertNon-relational databases have recently been the preferred choice when it comes to dealing with BigData challenges, but their performance is very sensitive to the chosen data organisations. We have seen differences of over ... -
Automatic query driven data modelling in Cassandra
Hernandez, Roger; Becerra Fontal, Yolanda; Torres Viñals, Jordi; Ayguadé Parra, Eduard (Barcelona Supercomputing Center, 2015-05-05)
Text en actes de congrés
Accés obertNon-relational databases have recently been the preferred choice when it comes to dealing with Big Data challenges, but their performance is very sensitive to the chosen data organisations. We have seen differences of ... -
BIGNASim: a NoSQL database structure and analysis portal for nucleic acids simulation data
Hospital, Adam; Andrio, Pau; Cugnasco, Cesare; Codo, Laia; Becerra Fontal, Yolanda; Dans, Pablo D.; Battistini, Federica; Torres Viñals, Jordi; Goñi, Ramon; Orozco, Modesto; Gelpí, Josep Lluís (2016-01-04)
Article
Accés obertMolecular dynamics simulation (MD) is, just behind genomics, the bioinformatics tool that generates the largest amounts of data, and that is using the largest amount of CPU time in supercomputing centres. MD trajectories ... -
BSC contributions in energy-aware resource management for large scale distributed systems
Valero Cortés, Mateo; Torres Viñals, Jordi; Ayguadé Parra, Eduard; Carrera Pérez, David; Guitart Fernández, Jordi; Beltran Querol, Vicenç; Becerra Fontal, Yolanda; Badia Sala, Rosa Maria; Labarta Mancho, Jesús José (2010)
Text en actes de congrés
Accés obertThis paper introduces the work being carried out at Barcelona Supercomputing Center in the area of Green Computing. We have been working in resource management for a long time and recently we included the energy parameter ... -
Budget-aware semi-supervised semantic and instance segmentation
Bellver Bueno, Míriam; Salvador Aguilera, Amaia; Torres Viñals, Jordi; Giró Nieto, Xavier (2019)
Comunicació de congrés
Accés obertMethods that move towards less supervised scenarios are key for image segmentation, as dense labels demand significant human intervention. Generally, the annotation burden is mitigated by labeling datasets with weaker forms ... -
Building green cloud services at low cost
Berral García, Josep Lluís; Goiri, Iñigo; Nguyen, Thu D.; Gavaldà Mestre, Ricard; Torres Viñals, Jordi; Bianchini, Ricardo (Institute of Electrical and Electronics Engineers (IEEE), 2014)
Comunicació de congrés
Accés obertInterest in powering datacenters at least partially using on-site renewable sources, e.g. solar or wind, has been growing. In fact, researchers have studied distributed services comprising networks of such “green” datacenters, ... -
CellMT: A cooperative multithreading library for the Cell/B.E.
Beltran Querol, Vicenç; Carrera Pérez, David; Torres Viñals, Jordi; Ayguadé Parra, Eduard (IEEE Computer Society Publications, 2009-12-16)
Text en actes de congrés
Accés obertThe Cell BE processor has proved that heterogeneous multi-core systems can provide a huge computational power with high efficiency for a wide range of applications. The simple design of the computational units and the use ... -
Characterizing cloud federation for enhancing providers' profit
Goiri Presa, Íñigo; Guitart Fernández, Jordi; Torres Viñals, Jordi (IEEE Computer Society Publications, 2010)
Text en actes de congrés
Accés obertCloud federation has been proposed as a new paradigm that allows providers to avoid the limitation of owning only a restricted amount of resources, which forces them to reject new customers when they have not enough local ... -
Checkpoint-based Fault-tolerant Infrastructure for Virtualized Service Providers
Goiri Presa, Íñigo; Julià, Ferran; Guitart Fernández, Jordi; Torres Viñals, Jordi (IEEE Computer Society Publications, 2010-04-23)
Text en actes de congrés
Accés obertCrash and omission failures are common in service providers: a disk can break down or a link can fail anytime. In addition, the probability of a node failure increases with the number of nodes. Apart from reducing the ... -
Complete instrumentation requirements for performance analysis of web based technologies
Carrera Pérez, David; Guitart Fernández, Jordi; Torres Viñals, Jordi; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2003)
Text en actes de congrés
Accés obertIn this paper we present the eDragon environment, a research platform created to perform complete performance analysis of new Web-based technologies. eDragon enables the understanding of how application servers work in ... -
Conceptes avançats de sistemes operatius
Herrero Zaragoza, José Ramón; Martorell Bofill, Xavier; Torres Viñals, Jordi (Edicions UPC, 2002)
Llibre
Accés restringit a la comunitat UPCAquesta edició correspon a la documentació de suport a l'alumne en format transparències on s'amplia la formació dels alumnes pel que fa als sistemes operatius, com ara la comunicació entre processos, i afegir-hi conceptes ... -
Cross-modal embeddings for video and audio retrieval
Surís Coll-Vinent, Dídac; Duarte, Amanda; Salvador Aguilera, Amaia; Torres Viñals, Jordi; Giró Nieto, Xavier (Springer, 2019)
Text en actes de congrés
Accés obertIn this work, we explore the multi-modal information provided by the Youtube-8M dataset by projecting the audio and visual features into a common feature space, to obtain joint audio-visual embeddings. These links are used ... -
Detection-aided liver lesion segmentation using deep learning
Bellver, Míriam; Maninis, Kevis-Kokitsi; Pont Tuset, Jordi; Giró Nieto, Xavier; Torres Viñals, Jordi; Van Gool, Luc (2017)
Comunicació de congrés
Accés obertA fully automatic technique for segmenting the liver and localizing its unhealthy tissues is a convenient tool in order to diagnose hepatic diseases and assess the response to the according treatments. In this work we ...