Now showing items 1-20 of 29

  • 1st BSC Doctoral Symposium : book of abstracts 

    Cucchietti, Fernando; Comes, Carles; Badia Moragas, Alba; Cabeza, Israel; Eguzkitza, Beatriz; Gifre Renom, Lluís; González, Santiago; Guevara, Marc; Hernández, Roger; Hussain, Tassadaq; Jiménez, Brian; Liu, Qixiao; Moal, Iain; Obiso, Vincenzo; Palavedu, Karthikeyan; Panic, Milos; Rajovic, Nikola; Royuela, Sara; Scaini, Chiara; Soret, Albert; Stipić, Srđjan; Strassburg, Janko; Valverde, Víctor; Villalba, Álvaro (Barcelona Supercomputing Center, 2014-05-26)
    Conference report
    Open Access
  • ABNO-driven content distribution in the telecom cloud 

    Gifre Renom, Lluís; Tornatore, Massimo; Contreras Murillo, Luis Miguel; Mukherjee, Biswanath; Velasco Esteban, Luis Domingo (2017-11-01)
    Article
    Open Access
    As current traffic growth is expected to strain capacity of today¿s metro network, novel content distribution architectures where contents are placed closer to the users are being investigated. In that regard, telecom ...
  • An in-operation planning tool architecture for flexgrid network re-optimization 

    Gifre Renom, Lluís; Castro Casales, Alberto; Ruiz Ramírez, Marc; Navarro, Nacho; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    In-operation network planning consists in re-optimizing a network, currently being operated to transport traffic, either minimizing resource utilization or maximizing the transported traffic. In the context of flexgrid ...
  • Architecture of a specialized back-end high performance computing-based PCE for flexgrid networks 

    Gifre Renom, Lluís; Velasco Esteban, Luis Domingo; Navarro, Nacho (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    The requirement of executing network re-optimization operations to efficiently manage and deploy new generation flexgrid-based optical networks has brought to light the need of some specialized PCEs capable of performing ...
  • Big data analytics for the virtual network topology reconfiguration use case 

    Gifre Renom, Lluís; Morales Alcaide, Fernando; Velasco Esteban, Luis Domingo; Ruiz Ramírez, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Restricted access - publisher's policy
    ABNO's OAM Handler is extended with big data analytics capabilities to anticipate traffic changes in volume and direction. Predicted traffic is used to trigger virtual network topology re-optimization. When the virtual ...
  • Big data analytics in support of virtual network topology adaptability 

    Gifre Renom, Lluís; Contreras, Luis Miguel; Lopez Alvarez, Victor; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Restricted access - publisher's policy
    ABNO's OAM Handler is extended with big data analytics capabilities to anticipate traffic changes in volume and direction. Predicted traffic is used as input for VNT re-optimization. Experimental assessment is realized on ...
  • Brokered orchestration for end-to-end service provisioning across heterogeneous multi-operator (Multi-AS) optical networks 

    Castro Casales, Alberto; Velasco Esteban, Luis Domingo; Gifre Renom, Lluís; Chen, Cen; Yin, Jie; Zhu, Zuqing; Proietti, Roberto; Yoo, Sung-Joo Ben (2016-12-01)
    Article
    Open Access
    This paper proposes a new networking paradigm introducing the broker-plane above the management planes of Autonomous Systems (ASes). The brokers communicate with the manager of each AS to assist coordinate end-to-end ...
  • Carrier SDN for flexgrid-based inter-datacenter connectivity 

    Asensio Garcia, Adrian; Gifre Renom, Lluís; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    Managing inter-datacenter (DC) connectivity to transport increasing amounts of data and optimize DC performance and costs becomes a challenge not only for DC operators but also for network operators. Current inter-DC ...
  • Comparing single layer and multilayer approaches to serve multicast requests on flexgrid networks 

    Gifre Renom, Lluís; Ruiz Ramírez, Marc; Asensio Garcia, Adrian; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
    Restricted access - publisher's policy
    Advanced services require high bitrate multicast connectivity being provided by core transport networks. Multicast services can be supported by a tree connecting the source to every destination of the multicast request. ...
  • Experimental assessment of ABNO-driven multicast connectivity in flexgrid networks 

    Gifre Renom, Lluís; Paolucci, Francesco; Gonzalez de Dios, Oscar; Velasco Esteban, Luis Domingo; Contreras, Luis Miguel; Cugini, Filippo; Castoldi, Piero; López Álvarez, Victor (2015-01-14)
    Article
    Open Access
    The increasing demand of internet services is pushing cloud services providers to increase the capacity of their data centers (DC) and create DC federations, where two or more cloud providers interconnect their infrastructures. ...
  • Experimental assessment of a high performance back-end PCE for Flexgrid optical network re-optimization 

    Gifre Renom, Lluís; Velasco Esteban, Luis Domingo; Navarro, Nacho; Junyent Giralt, Gabriel (The Optical Society (OSA), 2014)
    Conference report
    Restricted access - publisher's policy
    A specialized high performance Graphics Processing Unit (GPU)-based back-end Path Computation Element (PCE) to compute re-optimization in Flexgrid networks is presented. Experimental results show 6x speedups compared to ...
  • Experimental assessment of in-operation spectrum defragmentation 

    Gifre Renom, Lluís; Paolucci, Francesco; Aguado, Alejandro; Casellas Regi, Ramón; Castro Casales, Alberto; Cugini, Filippo; Castoldi, Piero; Velasco Esteban, Luis Domingo; López Grimau, Víctor (2014-06-01)
    Article
    Restricted access - publisher's policy
    Dynamic operation of flexgrid networks might cause optical spectrum to be divided into fragments, which makes it difficult finding contiguous spectrum of the required width for incoming connection requests, leading thus ...
  • Experimental demonstration of brokered orchestration for end-to-end service provisioning and interoperability across heterogeneous multi-operator (multi-AS) optical networks 

    Castro Casales, Alberto; Gifre Renom, Lluís; Chen, C.; Yin, J.; Zhu, Z.; Velasco Esteban, Luis Domingo; Yoo, S. J. B. (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
    Open Access
    A broker on top of opaquely-managed optical domains advertising their capabilities is proposed to provision multi-AS connections in multi-operator scenarios. In case of no spectrum continuity, intra-domain spectral ...
  • Experimental demonstration of heterogeneous cross stratum broker for scientific applications 

    Castro Casales, Alberto; Pérez Vela, Alba; Gifre Renom, Lluís; Proietti, Roberto; Cen, Chen; Yin, J.; Chen, Xiaoliang; Cao, Zheng; Zhu, Zuqing; Mishra, Vinod; Velasco Esteban, Luis Domingo; Yoo, S. J. B. (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Restricted access - publisher's policy
    We propose and demonstrate cross-stratum Broker orchestration for scientific applications and heterogeneous resources reservation in DCs, HPC facilities and networks belonging to different operators. Experiments were ...
  • Experimental demonstration of multi-vendor and multi-domain elastic optical network with data and control interoperability over a pan-european test-bed 

    González de Dios, Oscar; Casellas Regi, Ramón; Paolucci, Francesco; Napoli, Antonio; Gifre Renom, Lluís; Dupas, Arnaud; Hugues Salas, Emilio; Morro, Roberto; Belotti, Sergio; Meloni, Gianluca; Rahman, Talha; López Álvarez, Victor; Martínez Rivera, Ricardo Victor; Fresi, Francesco; Bohn, Marc; Yan, Shuangyi; Velasco Esteban, Luis Domingo; Layec, Patricia; Fernández Palacios, Juan Pedro (2016-04-01)
    Article
    Open Access
    The operation of multidomain and multivendor EONs can be achieved by interoperable sliceable bandwidth variable transponders (S-BVTs), a GMPLS/BGP-LS-based control plane, and a planning tool. The control plane is extended ...
  • Experimental validation of active frontend - backend stateful PCE operations in flexgrid optical network re-optimization 

    Martínez, Ricardo; Gifre Renom, Lluís; Casellas Regi, Ramón; Velasco Esteban, Luis Domingo; Muñoz González, Raul; Vilalta, Ricard (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    A PCE-based strategy for LSP re-optimization in flexgrid optical networks is experimentally validated. A front- and back-end stateful PCE architecture is deployed, wherein automatic and coordinated operations (e.g., ...
  • First demonstration of multi-vendor and multi-domain EON with S-BVT and control interoperability over Pan-European testbed 

    González de Dios, Oscar; Casellas Regi, Ramón; Paolucci, Francesco; Gifre Renom, Lluís; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
    Restricted access - publisher's policy
    The operation of multi-domain and multi-vendor EONscan be achieved by interoperable Sliceable Bandwidth Variable Transponders, a GMPLS/ BGP-LS -based control plane and a planning tool. This paper reports the first full ...
  • First experimental assessment of ABNO-driven in-operation flexgrid network re-optimization 

    Gifre Renom, Lluís; Paolucci, Francesco; Velasco Esteban, Luis Domingo; Aguado, Alejandro; Cugini, Filippo; Castoldi, Piero; López Álvarez, Victor (2015-02-01)
    Article
    Open Access
    Traffic affected by link failures can be recovered using path restoration schemes. In dynamically operated networks provided with a control plane, restoration algorithms run in a centralized element, such as the path ...
  • First experimental demonstration of ABNO-driven in-operation flexgrid network re-optimization 

    Velasco Esteban, Luis Domingo; Paolucci, Francesco; Gifre Renom, Lluís; Aguado, Alejandro; Cugini, Filippo; Castoldi, Piero; López, Víctor (The Optical Society (OSA), 2014)
    Conference report
    Open Access
    The after failure repair optimization problem is used to experimentally validate in-operation planning using the ABNO architecture to control a flexgrid optical network. A back-end PCE is used to solve this computational ...
  • Implementación de aplicación masivamente paralela usando CUDA 

    Gifre Renom, Lluís (Universitat Politècnica de Catalunya, 2012-06-01)
    Master thesis (pre-Bologna period)
    Open Access
    Se ha reimplementado en C/C++ con extensiones de CUDA para cálculo paralelo parte de una aplicación dada que ya estaba hecha en Java, intentando optimizar los tiempos de cálculo de las tareas que más tiempo consumían en ...