• A cost-based storage format selector for materialized results in big data frameworks 

      Munir, Rana Faisal; Abelló Gamazo, Alberto; Romero Moral, Óscar; Thiele, Maik; Lehner, Wolfgang (2019-05-08)
      Article
      Accés obert
      Modern big data frameworks (such as Hadoop and Spark) allow multiple users to do large-scale analysis simultaneously, by deploying data-intensive workflows (DIWs). These DIWs of different users share many common tasks (i.e, ...
    • A polymorphic register file for matrix operations 

      Ciobanu, Catalin; Kuzmanov, Georgi; Gaydadjiev, Georgi; Ramírez Bellido, Alejandro (IEEE Computer Society Publications, 2010)
      Text en actes de congrés
      Accés obert
      Previous vector architectures divided the available register file space in a fixed number of registers of equal sizes and shapes. We propose a register file organization which allows dynamic creation of a variable number ...
    • Direct lookup and hash-based metadata placement for local file systems 

      Lensing, Paul Hermann; Cortés, Toni; Brinkmann, Andre (Association for Computing Machinery (ACM), 2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      New challenges to file systems' metadata performance are imposed by the continuously growing number of files existing in file systems. The total amount of metadata can become too big to be cached, potentially leading to ...
    • Distributing orthogonal redundancy on adaptive disk arrays 

      González, José Luis; Cortés, Toni (Springer, 2008)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      When upgrading storage systems, the key is migrating data from old storage subsystems to the new ones for achieving a data layout able to deliver high performance I/O, increased capacity and strong data availability while ...
    • Hierarchical clustered register file organization for VLIW processors 

      Zalamea León, Francisco Javier; Llosa Espuny, José Francisco; Ayguadé Parra, Eduard; Valero Cortés, Mateo (IEEE Computer Society, 2003)
      Text en actes de congrés
      Accés obert
      Technology projections indicate that wire delays will become one of the biggest constraints in future microprocessor designs. To avoid long wire delays and therefore long cycle times, processor cores must be partitioned ...
    • Leveraging register windows to reduce physical registers to the bare minimum 

      Quiñones, Eduardo; Parcerisa Bundó, Joan Manuel; González Colás, Antonio María (2010-12)
      Article
      Accés obert
      Register window is an architectural technique that reduces memory operations required to save and restore registers across procedure calls. Its effectiveness depends on the size of the register file. Such register requirements ...
    • Reliable and randomized data distribution strategies for large scale storage systems 

      Miranda Bueno, Alberto; Effert, S.; Kang, Y.; Miller, E.L.; Brinkmann, A.; Cortés, Toni (2011)
      Text en actes de congrés
      Accés obert
      The ever-growing amount of data requires highly scalable storage solutions. The most flexible approach is to use storage pools that can be expanded and scaled down by adding or removing storage devices. To make this approach ...
    • Visualitzador i organitzador de fitxers RSS per a GNU/linux 

      Conde Rueda, Xavier A. (Universitat Politècnica de Catalunya, 2007-01)
      Projecte/Treball Final de Carrera
      Accés obert