• Light NUCA: a proposal for bridging the inter-cache latency gap 

      Suárez, Dario; Monreal Arnal, Teresa; Vallejo, Fernando; Beivide Palacio, Julio Ramón; Viñals Yufera, Víctor (IEEE Computer Society, 2009)
      Comunicació de congrés
      Accés obert
      To deal with the “memory wall” problem, microprocessors include large secondary on-chip caches. But as these caches enlarge, they originate a new latency gap between them and fast L1 caches (inter-cache latency gap). ...
    • On-the-fly adaptive routing for dragonfly interconnection networks 

      García, Marina; Vallejo, Enrique; Beivide Palacio, Julio Ramón; Camarero Coterillo, Cristobal; Valero Cortés, Mateo; Rodríguez Herrera, Germán; Minkenberg, Cyriel (2015-03-01)
      Article
      Accés obert
      Adaptive deadlock-free routing mechanisms are required to handle variable traffic patterns in dragonfly networks. However, distance-based deadlock avoidance mechanisms typically employed in Dragonflies increase the router ...
    • Peripheral twists for torus topologies with arbitrary aspect ratio 

      Vallejo Gutiérrez, Enrique; Moretó Planas, Miquel; Martínez, Carmen; Beivide Palacio, Julio Ramón (2011)
      Text en actes de congrés
      Accés obert
      A torus is a common topology used in supercomputer networks. Asymmetric Tori suffer from resource usage imbalance, which translates to reduced performance. Twisted Tori employ a twist in the peripheral links of one or more ...
    • Symmetric L-graphs 

      Camarero, Cristóbal; Martínez, Carmen; Beivide Palacio, Julio Ramón (Iniciativa Digital Politècnica, 2011)
      Text en actes de congrés
      Accés obert
      In this paper we characterize symmetric L-graphs, which are either Kronecker products of two cycles or Gaussian graphs. Vertex symmetric networks have the property that the communication load is uniformly distributed on ...
    • Task mapping in rectangular twisted tori 

      Camarero Coterillo, Cristobal; Vallejo, Enrique; Martínez Fernández, Maria del Carmen; Moretó Planas, Miquel; Beivide Palacio, Julio Ramón (Association for Computing Machinery (ACM), 2013)
      Text en actes de congrés
      Accés obert
      Twisted torus topologies have been proposed as an alternative to toroidal rectangular networks, improving distance parameters and providing network symmetry. However, twisting is apparently less amenable to task mapping ...