Ara es mostren els items 17-36 de 53

    • 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 obert
      Interest 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, ...
    • Burst-aware predictive autoscaling for containerized microservices 

      Abdullah, Muhammad; Iqbal, Waheed; Berral García, Josep Lluís; Polo Bardés, Jorda; Carrera Pérez, David (2022-05-01)
      Article
      Accés obert
      Autoscaling methods are used for cloud-hosted applications to dynamically scale the allocated resources for guaranteeing Quality-of-Service (QoS). The public-facing application serves dynamic workloads, which contain bursts ...
    • Challenges and opportunities for RISC-V architectures towards genomics-based workloads 

      Gómez Sánchez, Gonzalo; Call Barreiro, Aaron; Teruel García, Xavier; Alonso Parrilla, Lorena; Morán Castany, Ignasi; Pérez Elena, Miguel Ángel; Torrents Arenales, David; Berral García, Josep Lluís (Springer, 2023)
      Capítol de llibre
      Accés obert
      The use of large-scale supercomputing architectures is a hard requirement for scientific computing Big-Data applications. An example is genomics analytics, where millions of data transformations and tests per patient need ...
    • Clustering and graph mining techniques for classification of complex structural variations in cancer genomes 

      Gómez Sánchez, Gonzalo; Delgado Serrano, Luisa; Carrera Pérez, David; Torrents Arenales, David; Berral García, Josep Lluís (Nature, 2022-02-28)
      Article
      Accés obert
      For many years, a major question in cancer genomics has been the identification of those variations that can have a functional role in cancer, and distinguish from the majority of genomic changes that have no functional ...
    • Constant-Time Sliding Window Framework with Reduced Memory Footprint and Efficient Bulk Evictions 

      Villalba, Álvaro; Berral García, Josep Lluís; Carrera, David (IEEE, 2019-03-01)
      Article
      Accés obert
      The fast evolution of data analytics platforms has resulted in an increasing demand for real-time data stream processing. From Internet of Things applications to the monitoring of telemetry generated in large data centers, ...
    • Constant-time sliding window framework with reduced memory footprint and efficient bulk evictions 

      Villalba Navarro, Álvaro; Berral García, Josep Lluís; Carrera Pérez, David (2019-03)
      Article
      Accés obert
      The fast evolution of data analytics platforms has resulted in an increasing demand for real-time data stream processing. From Internet of Things applications to the monitoring of telemetry generated in large data centers, ...
    • Cross-stratum orchestration and flexgrid optical networks for datacenter federations 

      Velasco Esteban, Luis Domingo; Asensio Garcia, Adrian; Castro Casales, Alberto; Berral García, Josep Lluís; Carrera Pérez, David; López, Víctor; Fernández Palacios, Juan Pedro (2013-11)
      Article
      Accés restringit per política de l'editorial
      Current inter-data-center connections are configured as static big fat pipes, which entails large bit rate over-provisioning and thus high operational costs for DC operators. On the other hand, network operators cannot ...
    • Database integrated analytics using R : initial experiences with SQL-Server + R 

      Berral García, Josep Lluís; Poggi, Nicolas (2016)
      Comunicació de congrés
      Accés obert
      Most data scientists use nowadays functional or semi-functional languages like SQL, Scala or R to treat data, obtained directly from databases. Such process requires to fetch data, process it, then store again, and such ...
    • Database Integrated Analytics Using R: Initial Experiences with SQL-Server + R 

      Berral García, Josep Lluís; Poggi, Nicolas (Institute of Electrical and Electronics Engineers (IEEE), 2017-02-02)
      Comunicació de congrés
      Accés obert
      Most data scientists use nowadays functional or semi-functional languages like SQL, Scala or R to treat data, obtained directly from databases. Such process requires to fetch data, process it, then store again, and such ...
    • Discovering ship navigation patterns towards environmental impact modeling 

      Gutiérrez, Alberto; Buchaca, David; Berral García, Josep Lluís (Barcelona Supercomputing Center, 2017-05-04)
      Text en actes de congrés
      Accés obert
      In this work a data pipe-line to manage and extract patterns from time-series is described. The patterns found with a combination of Conditional Restricted Boltzmann Machine (CRBM) and k-Means algorithms are then validated ...
    • Distributing deep learning hyperparameter tuning for 3D medical image segmentation 

      Berral García, Josep Lluís; Aranda Llorens, Oriol; Domínguez Bermúdez, Juan Luis; Torres Viñals, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Text en actes de congrés
      Accés obert
      Most research on novel techniques for 3D Medical Image Segmentation (MIS) is currently done using Deep Learning with GPU accelerators. The principal challenge of such technique is that a single input can easily cope computing ...
    • Empowering automatic data-center management with machine learning 

      Berral García, Josep Lluís; Gavaldà Mestre, Ricard; Torres Viñals, Jordi (2013)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The Cloud as computing paradigm has become nowadays crucial for most Internet business models. Managing and optimizing its performance on a moment-by-moment basis is not easy given as the amount and diversity of elements ...
    • Empowering automatic data-center management with machine learning 

      Berral García, Josep Lluís; Gavaldà Mestre, Ricard; Torres Viñals, Jordi (2013)
      Report de recerca
      Accés obert
      The Cloud as computing paradigm has become nowadays crucial for most Internet business models. Managing a cloud and optimizing its performance on a moment-by-moment basis is not easy given as the amount and diversity of ...
    • Energy-aware scheduling in virtualized datacenters 

      Goiri Presa, Íñigo; Julià Massó, Ferran; Nou Castell, Ramon; Berral García, Josep Lluís; Guitart Fernández, Jordi; Torres Viñals, Jordi (IEEE Computer Society Publications, 2010)
      Text en actes de congrés
      Accés obert
      The reduction of energy consumption in large-scale datacenters is being accomplished through an extensive use of virtualization, which enables the consolidation of multiple workloads in a smaller number of machines. ...
    • Energy-efficient and multifaceted resource management for profit-driven virtualized data centers 

      Goiri Presa, Íñigo; Berral García, Josep Lluís; Fitó, Josep Oriol; Julià Massó, Ferran; Nou Castell, Ramon; Guitart Fernández, Jordi; Gavaldà Mestre, Ricard; Torres Viñals, Jordi (Elsevier, 2012-05)
      Article
      Accés restringit per política de l'editorial
      As long as virtualization has been introduced in data centers, it has been opening new chances for resource management. Nowadays, it is not just used as a tool for consolidating underused nodes and save power; it also ...
    • Floki: a proactive data forwarding system for direct inter-function communication for serverless workflows 

      Nestorov, Anna Maria; Berral García, Josep Lluís; Misale, Claudia; Wang, Chen; Carrera Pérez, David; Youssef, Alaa (Association for Computing Machinery (ACM), 2022)
      Text en actes de congrés
      Accés obert
      Serverless computing emerges as an architecture choice to build and run containerized data-intensive pipelines. It leaves the tedious work of infrastructure management and operations to the cloud provider, allowing developers ...
    • Improved self-management of datacenter systems applying machine learning 

      Berral García, Josep Lluís (Universitat Politècnica de Catalunya, 2013-11-22)
      Tesi
      Accés obert
      Autonomic Computing is a Computer Science and Technologies research area, originated during mid 2000's. It focuses on optimization and improvement of complex distributed computing systems through self-control and ...
    • Improving maritime traffic emission estimations on missing data with CRBMs 

      Gutiérrez Torre, Alberto; Berral García, Josep Lluís; Buchaca Prats, David; Guevara Vilardell, Marc; Soret, Albert; Carrera Pérez, David (Elsevier, 2020-07-07)
      Article
      Accés obert
      Maritime traffic emissions are a major concern to governments as they heavily impact the Air Quality in coastal cities. Ships use the Automatic Identification System (AIS) to continuously report position and speed among ...
    • J2EE instrumentation for software aging root cause application component determination with AspectJ 

      Alonso López, Javier; Torres Viñals, Jordi; Berral García, Josep Lluís; Gavaldà Mestre, Ricard (IEEE Computer Society Publications, 2010-04-23)
      Text en actes de congrés
      Accés obert
      Unplanned system outages have a negative impact on company revenues and image. While the last decades have seen a lot of efforts from industry and academia to avoid them, they still happen and their impact is increasing. ...
    • Large-scale video analytics through object-level consolidation 

      Rivas Barragan, Daniel; Guim Bernat, Francesc; Polo Bardés, Jorda; Berral García, Josep Lluís; Carrera Pérez, David (Springer, 2022)
      Text en actes de congrés
      Accés obert
      As the number of installed cameras grows, so do the compute resources required to process and analyze all the images captured by these cameras. Video analytics enables new use cases, such as smart cities or autonomous ...