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

Ara es mostren els items 43-62 de 217

    • CATA: Criticality aware task acceleration for multicore processors 

      Castillo, Emilio; Moretó Planas, Miquel; Casas, Marc; Álvarez Martí, Lluc; Vallejo, Enrique; Chronaki, Kallia; Badia Sala, Rosa Maria; Bosque Orero, José Luis; Beivide Palacio, Julio Ramón; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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      Managing criticality in task-based programming models opens a wide range of performance and power optimization opportunities in future manycore systems. Criticality aware task schedulers can benefit from these opportunities ...

    • Compartición de espacio entre instrucciones 

      Rodríguez Lafuente, Clemente; Viñals Yúfera, Víctor; Labarta Mancho, Jesús José (E.T.S.I. de Telecomunicación, 1985)
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      Un gran número de computadores en la actualidad usan memoria cache para adaptar la velocidad de la memoria a la del procesador, o bien reducir el tráfico en sistemas multiprocesadores. En la actualidad un tema discutido ...

    • Complete instrumentation requirements for performance analysis of web based technologies 

      Carrera Pérez, David; Guitart Fernández, Jordi; Torres Viñals, Jordi; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2003)
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      In this paper we present the eDragon environment, a research platform created to perform complete performance analysis of new Web-based technologies. eDragon enables the understanding of how application servers work in ...

    • Complex pipelined executions in OpenMP parallel applications 

      González Tallada, Marc; Ayguadé Parra, Eduard; Martorell Bofill, Xavier; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2001)
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      This paper proposes a set of extensions to the OpenMP programming model to express complex pipelined computations. This is accomplished by defining, in the form of directives, precedence relations among the tasks originated ...

    • CRC-based memory reliability for task-parallel HPC applications 

      Subasi, Omer; Unsal, Osman Sabri; Labarta Mancho, Jesús José; Yalcin, Gulay; Cristal Kestelman, Adrián (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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      Memory reliability will be one of the major concerns for future HPC and Exascale systems. This concern is mostly attributed to the expected massive increase in memory capacity and the number of memory devices in Exascale ...

    • cuHinesBatch: solving multiple hines systems on GPUs Human Brain Project 

      Valero-Lara, Pedro; Martinez-Perez, Ivan; Peña, Antonio J.; Martorell Bofill, Xavier; Sirvent, Raul; Labarta Mancho, Jesús José (Elsevier, 2017)
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      The simulation of the behavior of the Human Brain is one of the most important challenges today in computing. The main problem consists of finding efficient ways to manipulate and compute the huge volume of data that this ...

    • Data augmentation for deep learning of non-mydriatic screening retinal fundus images 

      Moya Sánchez, Eduardo Ulises; Sánchez Pérez, Abraham; Zapata Victori, Miguel Ángel; Moreno, Jonatan; Garcia Gasulla, Dario; Parés, Ferran; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José; Cortés García, Claudio Ulises (Springer, 2018)
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      Fundus image is an effective and low-cost tool to screen for common retinal diseases. At the same time, Deep Learning (DL) algorithms have been shown capable of achieving similar or even better performance accuracies than ...

    • Data distribution and loop parallelization for shared-memory multiprocessors 

      Ayguadé Parra, Eduard; García Almiñana, Jordi; Grande Ayan, Ma. Luz; Labarta Mancho, Jesús José (Springer, 1996)
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      Shared-memory multiprocessor systems can achieve high performance levels when appropriate work parallelization and data distribution are performed. These two actions are not independent and decisions have to be taken in a ...

    • DDT: a research tool for automatic data distribution in HPF 

      Ayguadé Parra, Eduard; García Almiñana, Jordi; Gironès Medina, Mercè; Grande Ayan, Ma. Luz; Labarta Mancho, Jesús José (1997-03)
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      This article describes the main features and implementation of our automatic data distribution research tool. The tool (DDT) accepts programs written in Fortran 77 and generates High Performance Fortran (HPF) directives ...

    • Dense matrix computations on NUMA architectures with distance-aware work stealing 

      Al-Omairy, Rabab; Miranda Álamo, Guillermo; Ltaief, Hatem; Badia Sala, Rosa Maria; Martorell Bofill, Xavier; Labarta Mancho, Jesús José; Keyes, David E. (2015-03)
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      We employ the dynamic runtime system OmpSs to decrease the overhead of data motion in the now ubiquitous non-uniform memory access (NUMA) high concurrency environment of multicore processors. The dense numerical linear ...

    • Design and implementation of a 2048FFT capture spectrum analyzer 

      Vázquez Grau, Gregorio; Labarta Mancho, Jesús José; Amengual, M.; Casamajor, J. (1985)
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      This paper describes the hardware implementation of a digital spectrum analyzer which, by using a capture process of the signal under processing, performs some non parametric signal processing techniques. All the possibilities ...

    • Designing and modelling selective replication for fault-tolerant HPC applications 

      Subasi, Omer; Yalcin, Gulay; Zyulkyarov, Ferad; Unsal, Osman Sabri; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2017)
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      Fail-stop errors and Silent Data Corruptions (SDCs) are the most common failure modes for High Performance Computing (HPC) applications. There are studies that address fail-stop errors and studies that address SDCs. However ...

    • Detailed and simultaneous power and performance analysis 

      Servat, Harald; Llort Sánchez, Germán; Giménez Lucas, Judit; Labarta Mancho, Jesús José (2016-02)
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      On the road to Exascale computing, both performance and power areas are meant to be tackled at different levels, from system to processor level. The processor itself is the main responsible for the serial node performance ...

    • Detailed performance analysis using coarse grain sampling 

      Servat, Harald; Llort Sánchez, Germán; Giménez Lucas, Judit; Labarta Mancho, Jesús José (Springer, 2014)
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      Performance evaluation tools enable analysts to shed light on how applications behave both from a general point of view and at concrete execution points, but cannot provide detailed information beyond the monitored regions ...

    • Dual-level parallelism exploitation with OpenMP in coastal ocean circulation modeling 

      González Tallada, Marc; Ayguadé Parra, Eduard; Martorell Bofill, Xavier; Labarta Mancho, Jesús José; Luong, P V (2002-05)
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      Two alternative dual-level parallel implementations of the Multiblock Grid Princeton Ocean Model (MGPOM) are compared in this paper. The first one combines the use of two programming paradigms: message passing with the ...

    • Dynamic load balancing for hybrid applications 

      Garcia Gasulla, Marta; Corbalán González, Julita; Labarta Mancho, Jesús José (Barcelona Supercomputing Center, 2015-05-05)
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      DLB relies on the usage of hybrid programming models and exploits the malleability of the second level of parallelism to redistribute computation power across processes.

    • Dynamic load balancing of MPI+OpenMP applications 

      Corbalán González, Julita; Duran González, Alejandro; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2004)
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      The hybrid programming model MPI+OpenMP are useful to solve the problems of load balancing of parallel applications independently of the architecture. Typical approaches to balance parallel applications using two levels ...

    • ecoHMEM: Improving object placement methodology for hybrid memory systems in HPC 

      Jordà Peroliu, Marc; Rai, Siddharth; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José; Peña Monferrer, Antonio José (Institute of Electrical and Electronics Engineers (IEEE), 2022)
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      Recent byte-addressable persistent memory (PMEM) technology offers capacities comparable to storage devices and access times much closer to DRAMs than other non-volatile memory technology. To palliate the large gap with ...

    • Evaluating link prediction on large graphs 

      Garcia Gasulla, Dario; Cortés García, Claudio Ulises; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José (IOS Press, 2015)
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      Exploiting network data (i.e., graphs) is a rather particular case of data mining. The size and relevance of network domains justifies research on graph mining, but also brings forth severe complications. Computational ...

    • Evaluating the impact of OpenMP 4.0 extensions on relevant parallel workloads 

      Vidal Ortiz, Raul; Casas, Marc; Moretó Planas, Miquel; Chasapis, Dimitrios; Ferrer Ibáñez, Roger; Martorell Bofill, Xavier; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José; Valero Cortés, Mateo (Springer, 2015)
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      OpenMP has been for many years the most widely used programming model for shared memory architectures. Periodically, new features are proposed and some of them are finally selected for inclusion in the OpenMP standard. The ...