Browsing by Author "Sánchez Barrera, Isaac"Més informacióMés informació

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    • Algorithms for the linear coloring arrangement problem 

      Sánchez Barrera, Isaac (Universitat Politècnica de Catalunya, 2015-01-28)
      Bachelor thesis
      Open Access
      [CATALÀ] El projecte emprèn la tasca de desenvolupar algorismes eficients per resoldre o aproximar el problema de l'arranjament lineal mínim d'una coloració per a graphs, variació del MinLA. Aquí, l'assignació lineal està ...

    • Exploiting data locality in cache-coherent NUMA systems 

      Sánchez Barrera, Isaac (Universitat Politècnica de Catalunya, 2022-04-06)
      Doctoral thesis
      Open Access
      The end of Dennard scaling has caused a stagnation of the clock frequency in computers.To overcome this issue, in the last two decades vendors have been integrating larger numbers of processing elements in the systems, ...

    • Graph partitioning applied to DAG scheduling to reduce NUMA effects 

      Sánchez Barrera, Isaac; Casas, Marc; Moretó Planas, Miquel; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José; Valero Cortés, Mateo (Association for Computing Machinery (ACM), 2018)
      Conference lecture
      Open Access
      The complexity of shared memory systems is becoming more relevant as the number of memory domains increases, with different access latencies and bandwidth rates depending on the proximity between the cores and the devices ...

    • Graph partitioning for the reduction of data transfer in task-based programming models 

      Sánchez Barrera, Isaac (Universitat Politècnica de Catalunya, 2016-07)
      Master thesis
      Open Access
      Covenantee:   Barcelona Supercomputing Center
      Current high performance computing architectures are composed of large shared memory NUMA nodes, among other components. Such nodes are becoming increasingly complex as they have several NUMA domains with different access ...

    • Modeling and optimizing NUMA effects and prefetching with machine learning 

      Sánchez Barrera, Isaac; Black-Schaffer, David; Casas, Marc; Moretó Planas, Miquel; Stupnikova, Anastasiia; Popov, Mihail (Association for Computing Machinery (ACM), 2020)
      Conference report
      Open Access
      Both NUMA thread/data placement and hardware prefetcher configuration have significant impacts on HPC performance. Optimizing both together leads to a large and complex design space that has previously been impractical to ...

    • On the benefits of tasking with OpenMP 

      Rico, Alejandro; Sánchez Barrera, Isaac; Joao, Jose A.; Randall, Joshua; Casas, Marc; Moretó Planas, Miquel (Springer, 2019)
      Conference report
      Open Access
      Tasking promises a model to program parallel applications that provides intuitive semantics. In the case of tasks with dependences, it also promises better load balancing by removing global synchronizations (barriers), and ...

    • Using graph partitioning to accelerate task-based parallel applications 

      Sánchez Barrera, Isaac; Casas, Marc; Moretó Planas, Miquel; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José; Valero Cortés, Mateo (Barcelona Supercomputing Center, 2015-05-05)
      Conference report
      Open Access
      Current high performance computing architectures are composed of large shared memory NUMA nodes, among other components. Such nodes are becoming increasingly complex as they have several NUMA domains with different access ...