Exploració per autor "Labarta Mancho, Jesús José"Més informacióMés informació

Ara es mostren els items 185-204 de 217

    • Tareador: a tool to unveil parallelization strategies at undergraduate level 

      Ayguadé Parra, Eduard; Badia Sala, Rosa Maria; Jiménez González, Daniel; Herrero Zaragoza, José Ramón; Labarta Mancho, Jesús José; Subotic, Vladimir; Utrera Iglesias, Gladys Miriam (North Carolina State University, 2015)
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      This paper presents a methodology and framework designed to assist students in the process of finding appropriate task decomposition strategies for their sequential program, as well as identifying bottlenecks ...

    • Task scheduling techniques for asymmetric multi-core systems 

      Chronaki, Kallia; Rico, Alejandro; Casas, Marc; Moretó Planas, Miquel; Badia Sala, Rosa Maria; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José; Valero Cortés, Mateo (2017-07-01)
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      As performance and energy efficiency have become the main challenges for next-generation high-performance computing, asymmetric multi-core architectures can provide solutions to tackle these issues. Parallel programming ...

    • Task superscalar: an out-of-order task pipeline 

      Etsion, Yoav; Cabarcas, Felipe; Rico Carro, Alejandro; Ramírez Bellido, Alejandro; Badia Sala, Rosa Maria; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José; Valero Cortés, Mateo (IEEE Computer Society Publications, 2010)
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      We present Task Superscalar, an abstraction of instruction-level out-of-order pipeline that operates at the tasklevel. Like ILP pipelines, which uncover parallelism in a sequential instruction stream, task superscalar ...

    • Task-based programming in COMPSs to converge from HPC to big data 

      Conejero, Javier; Corella, Sandra; Badia Sala, Rosa Maria; Labarta Mancho, Jesús José (2017-04-06)
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      Task-based programming has proven to be a suitable model for high-performance computing (HPC) applications. Different implementations have been good demonstrators of this fact and have promoted the acceptance of task-based ...

    • Task-based programming with OmpSs and its application 

      Fernandez, Alejandro; Beltran Querol, Vicenç; Martorell Bofill, Xavier; Badia,, R.M.; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José (Springer, 2014)
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      OmpSs is a task-based programming model that aims to provide portability and flexibility for sequential codes while the performance is achieved by the dynamic exploitation of the parallelism at task level. OmpSs targets ...

    • Task-parallel reductions in OpenMP and OmpSs 

      Ciesko, Jan; Mateo, Sergi; Teruel, Xavier; Beltran Querol, Vicenç; Martorell Bofill, Xavier; Badia,, R.M.; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José (Springer, 2014)
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      The wide adoption of parallel processing hardware in mainstream computing as well as the raising interest for efficient parallel programming in the developer community increase the demand for parallel programming model ...

    • The cooperative parallel: A discussion about run-time schedulers for nested parallelism 

      Royuela, Sara; Serrano, Maria A.; García Gasulla, Marta; Mateo Bellido, Sergi; Labarta Mancho, Jesús José; Quiñones Moreno, Eduardo (Springer, 2019)
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      Nested parallelism is a well-known parallelization strategy to exploit irregular parallelism in HPC applications. This strategy also fits in critical real-time embedded systems, composed of a set of concurrent functionalities. ...

    • The HPCG benchmark: analysis, shared memory preliminary improvements and evaluation on an Arm-based platform 

      Ruiz, Daniel; Mantovani, Filippo; Casas, Marc; Labarta Mancho, Jesús José; Spiga, Filippo (2018)
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      The High-Performance Conjugate Gradient (HPCG) benchmark complements the LINPACK benchmark in the performance evaluation coverage of large High-Performance Computing (HPC) systems. Due to its lower arithmetic intensity and ...

    • The MAMe dataset: On the relevance of high resolution and variable shape image properties 

      Parés Pont, Ferran; Arias Duart, Anna; García Gasulla, Dario; Campo Francés, Gema; Viladrich Iglesias, Nina; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José (Springer, 2022-08)
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      The mostcommon approach in image classification tasks is to resize all images in the dataset to a unique shape, while reducing their resolution to a size that makes experimentation at scale easier. This practice has benefits ...

    • The Mont-Blanc prototype: an alternative approach for high-performance computing systems 

      Rajovic, Nikola; Ramírez Bellido, Alejandro; Rico, Alejandro; Mantovani, Filippo; Ruiz, Daniel; Villarubi, Oriol; Gómez, Constantino; Backes, Luna; Nieto, Diego; Servat, Harald; Martorell Bofill, Xavier; Labarta Mancho, Jesús José; Ayguadé Parra, Eduard; Valero Cortés, Mateo; Adeniyi-Jones, Chris; Derradji, Said; Gloaguen, Hervé; Lanucara, Piero; Sanna, Nico; Mehaut, Jean-François; Pouget, Kevin; Videau, Brice; Boyer, Eric; Allalen, Momme; Auweter, Axel; Brayford, David; Tafani, Daniele; Brömmel, Dirk; Halver, René; Meinke, Jan H.; Beivide Palacio, Ramon; Benito, Mariano; Vallejo, Enrique (2016)
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      High-performance computing (HPC) is recognized as one of the pillars for further advance of science, industry, medicine, and education. Current HPC systems are being developed to overcome emerging challenges in order to ...

    • The Mont-Blanc prototype: an alternative approach for HPC systems 

      Rajovic, Nikola; Rico, Alejandro; Mantovani, Filippo; Ruiz, Daniel; Vlarrubi, Josep O.; Gomez, Constantino; Backes, Luna; Nieto, Diego; Servat, Harald; Martorell Bofill, Xavier; Labarta Mancho, Jesús José; Ayguadé Parra, Eduard; Adeniyi-Jones, Chris; Derradji, Said; Gloaguen, Hervé; Lanucara, Piero; Sanna, Nico; Mehaut, Jean-François; Pouget, Kevin; Videau, Brice; Boyer, Eric; Allalen, Momme; Auweter, Axel; Brayford, David; Tafani, Daniele; Weinberg, Volker; Brömmel, Dirk; Halver, René; Meinke, Jan H.; Beivide Palacio, Ramon; Benito, Mariano; Vallejo, Enrique; Valero Cortés, Mateo; Ramirez, Alex (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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      High-performance computing (HPC) is recognized as one of the pillars for further progress in science, industry, medicine, and education. Current HPC systems are being developed to overcome emerging architectural challenges ...

    • The OmpSs reductions model and how to deal with scatter-updates 

      Ciesko, Jan; Mateo Bellido, Sergi; Teruel, Xavier; Beltran Querol, Vicenç; Martorell Bofill, Xavier; Badia Sala, Rosa Maria; Labarta Mancho, Jesús José (Barcelona Supercomputing Center, 2015-05-05)
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      Scatter-updates represent a reoccurring algorithmic pattern in many scientific applications. Their scalable execution on modern systems is difficult due to performance limitations introduced by their irregular memory access ...

    • The OTree: multidimensional indexing with efficient data sampling for HPC 

      Cugnasco, Cesare; Calmet, Hadrien; Santamaria Mateu, Pol; Sirvent Pardell, Raül; Eguzkitza, Ane Beatriz; Houzeaux, Guillaume; Becerra Fontal, Yolanda; Torres Viñals, Jordi; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2019)
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      Spatial big data is considered an essential trend in future scientific and business applications. Indeed, research instruments, medical devices, and social networks generate hundreds of petabytes of spatial data per year. ...

    • The secrets of the accelerators unveiled: tracing heterogeneous executions through OMPT 

      Llort, German; Filgueras Izquierdo, Antonio; Jiménez-González, Daniel; Servat, Harald; Teruel, Xavier; Mercadal, Estanislao; Álvarez, Carlos; Giménez, Judit; Martorell Bofill, Xavier; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José (Springer, 2016)
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      Heterogeneous systems are an important trend in the future of supercomputers, yet they can be hard to program and developers still lack powerful tools to gain understanding about how well their accelerated codes perform ...

    • Thread fork/join techniques for multi-level parallelism exploitation in NUMA multiprocessors 

      Martorell Bofill, Xavier; Ayguadé Parra, Eduard; Navarro, Nacho; Corbalán González, Julita; González Tallada, Marc; Labarta Mancho, Jesús José (Association for Computing Machinery (ACM), 1999)
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      This paper presents some techniques for efficient thread forking and joining in parallel execution environments, taking into consideration the physical structure of NUMA machines and the support for multi-level parallelization ...

    • Towards an auto-tuned and task-based SpMV (LASs Library) 

      Catalán Pallarés, Sandra; Usui, Tetsuzo; Toledo, Leonel; Martorell Bofill, Xavier; Labarta Mancho, Jesús José; Valero Lara, Pedro (Springer, 2020)
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      We present a novel approach to parallelize the SpMV kernel included in LASs (Linear Algebra routines on OmpSs) library, after a deep review and analysis of several well-known approaches. LASs is based on OmpSs, a task-based ...

    • Towards reconfigurable accelerators in HPC: Designing a multipurpose eFPGA tile for heterogeneous SoCs 

      Hotfilter, Tim; Kreß, Fabian; Kempf, Fabian; Becker, Jürgen; Haro Ruiz, Juan Miguel de; Jiménez González, Daniel; Moretó Planas, Miquel; Álvarez Martínez, Carlos; Labarta Mancho, Jesús José; Baili, Imen (Institute of Electrical and Electronics Engineers (IEEE), 2022)
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      The goal of modern high performance computing platforms is to combine low power consumption and high throughput. Within the European Processor Initiative (EPI), such an SoC platform to meet the novel exascale requirements ...

    • Towards task-parallel reductions in OpenMP 

      Ciesko, Jan; Mateo, Sergi; Teruel, Xavier; Martorell Bofill, Xavier; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José; Duran, Alex; De Supinski, Bronis; Olivier, Stephen; Li, Kelvin; Eichenberger, Alexandre (Springer, 2015)
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      Reductions represent a common algorithmic pattern in many scientific applications. OpenMP* has always supported them on parallel and worksharing constructs. OpenMP 3.0’s tasking constructs enable new parallelization ...

    • Trace spectral analysis toward dynamic levels of detail 

      Llort Sánchez, Germán; Casas, Marc; Servat, Harald; Huck, Kevin A.; Giménez Lucas, Judit; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2011)
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      The emergence of Petascale systems has raised new challenges to performance analysis tools. Understanding every single detail of an execution is important to bridge the gap between the theoretical peak and the actual ...

    • Training CNNs using high-resolution images of variable shape 

      Parés Sabatés, Ferran; Garcia-Gasulla, Dario; Labarta Mancho, Jesús José (Barcelona Supercomputing Center, 2019-05-07)
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