En aquest grup s´investiga en tècniques que permeten millorar l´eficiència dels sistemes de computació d?altes prestacions. Aquest objectiu es tracta des de perspectives diverses que requereixen un cert grau de cooperació: arquitectura del sistema uniprocessador i multiprocessador, compilador, sistema operatiu, eines d´anàlisi, visualització i predicció, algorismes i aplicacions. Per mesurar l´eficiència es consideren mètriques que van més enllà del temps d´execució dels programes. En particular es consideren aspectes relacionats amb el disseny del sistema (cicle d´operació, àrea i consum de potència del processador i la jerarquia de memòria, escalabilitat de l´organització uniprocessador i multiprocessador), amb la verificació funcional dels sistemes, amb la facilitat i la portabilitat del model de programació i amb el rendiment en entorns multiprogramats i distribuïts, entre altres.

http://futur.upc.edu/CAP

The group aims to improve the efficiency of high-performance computing systems. To that end, it employs a variety of approaches that require a certain level of cooperation and integration: microarchitecture and multiprocessor architecture, compilers, operating systems, analysis, visualisation and prediction tools, algorithms and applications. When measuring efficiency, in addition to the traditional approach that takes the execution time into account, we use metrics that consider design factors such as cycle time, area and power dissipation of the processor and memory hierarchy, scalability of the microarchitecture and multiprocessor organisation, system correctness, portability and ease of use of programming models, and performance when running on multiuser, multiprogrammed and distributed environments, among others.

http://futur.upc.edu/CAP

The group aims to improve the efficiency of high-performance computing systems. To that end, it employs a variety of approaches that require a certain level of cooperation and integration: microarchitecture and multiprocessor architecture, compilers, operating systems, analysis, visualisation and prediction tools, algorithms and applications. When measuring efficiency, in addition to the traditional approach that takes the execution time into account, we use metrics that consider design factors such as cycle time, area and power dissipation of the processor and memory hierarchy, scalability of the microarchitecture and multiprocessor organisation, system correctness, portability and ease of use of programming models, and performance when running on multiuser, multiprogrammed and distributed environments, among others.

http://futur.upc.edu/CAP

Enviaments recents

  • The AXIOM platform for next-generation cyber physical systems 

    Theodoropoulos, Dimitris; Mazumdar, Somnath; Ayguadé Parra, Eduard; Bettin, Nicola; Bueno Hedo, Javier; Ermini, Sara; Filgueras Izquierdo, Antonio; Jiménez González, Daniel; Álvarez Martínez, Carlos; Martorell Bofill, Xavier; Montefoschi, Francesco; Oro Garcia, David; Pnevmatikatos, Dionisis; Rizzo, Antonio; Gai, Paolo; Garzarella, Stefano; Morelli, Bruno; Pomella, Alberto; Giorgi, Roberto (2017-06-03)
    Article
    Accés restringit per política de l'editorial
    Cyber-Physical Systems (CPSs) are widely used in many applications that require interactions between humans and their physical environment. These systems usually integrate a set of hardware-software components for optimal ...
  • ParaView + Alya + D8tree: Integrating high performance computing and high performance data analytics 

    Artigues, Antoni; Cugnasco, Cesare; Becerra Fontal, Yolanda; Cucchietti, Fernando; Houzeaux, Guillaume; Vázquez, Mariano; Torres Viñals, Jordi; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José (Elsevier, 2017)
    Article
    Accés obert
    Large scale time-dependent particle simulations can generate massive amounts of data, making it so that storing the results is often the slowest phase and the primary time bottleneck of the simulation. Furthermore, analysing ...
  • Workflows for science: a challenge when facing the convergence of HPC and big data 

    Badia Sala, Rosa Maria; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José (2017)
    Article
    Accés obert
    Workflows have been used traditionally as a mean to describe and implement the computing usually parametric studies and explorations searching for the best solution that scientific researchers want to perform. A workflow ...
  • An integrated vector-scalar design on an in-order ARM core 

    Stanic, Milan; Palomar Pérez, Óscar; Hayes, Timothy; Ratkovic, Ivan; Cristal Kestelman, Adrián; Unsal, Osman Sabri; Valero Cortés, Mateo (2017-07)
    Article
    Accés obert
    In the low-end mobile processor market, power, energy, and area budgets are significantly lower than in the server/desktop/laptop/high-end mobile markets. It has been shown that vector processors are a highly energy-efficient ...
  • Uso del simulador SimpleReuse 

    Álvarez Martínez, Carlos; Valero Cortés, Mateo (2005-11)
    Report de recerca
    Accés obert
    Este report explica el funcionamiento del simulador SimpleReuse (una evolución de SimpleScalar y Wattch) para su uso en simulación de reuso de instrucciones o regiones. Este simulador realiza medidas de tiempo, instrucciones ...
  • Predicting multiple streams per cycle 

    Santana Jaria, Oliverio J.; Ramírez Bellido, Alejandro; Valero Cortés, Mateo (2005)
    Report de recerca
    Accés obert
    The next stream predictor is an accurate branch predictor that provides stream level sequencing. Every stream prediction contains a full stream of instructions, that is, a sequence of instructions from the target of a taken ...
  • Access to streams in multiprocessor systems 

    Valero Cortés, Mateo; Peirón Guardia, Montse; Ayguadé Parra, Eduard (Institute of Electrical and Electronics Engineers (IEEE), 1993)
    Text en actes de congrés
    Accés obert
    When accessing streams in vector multiprocessor machines, degradation in the interconnection network and conflicts in the memory modules are the factors that reduce the efficiency of the system. In this paper, we present ...
  • Tweet-SCAN: an event discovery technique for geo-located tweets 

    Capdevila Pujol, Joan; Cerquides, Jesús; Nin, Jordi; Torres Viñals, Jordi (Elsevier, 2017-07-01)
    Article
    Accés restringit per política de l'editorial
    Twitter has become one of the most popular Location-based Social Networks (LBSNs) that bridges physical and virtual worlds. Tweets, 140-character-long messages, are aimed to give answer to the What’s happening? question. ...
  • Implementing kilo-instruction multiprocessors 

    Vallejo, Enrique; Galluzzi, Marco; Cristal Kestelman, Adrián; Vallejo, Fernando; Beivide Palacio, Ramon; Stenström, Per; Smith, James E.; Valero Cortés, Mateo (2005)
    Report de recerca
    Accés obert
    Multiprocessors are coming into wide-spread use in many application areas, yet there are a number of challenges to achieving a good tradeoff between complexity and performance. For example, while implementing memory coherence ...
  • Architectural support for real-time task scheduling in SMT processors 

    Cazorla Almeida, Francisco Javier; Knijnenburg, Peter M.W.; Sakellariou, Rizos; Fernández, Enrique; Ramírez Bellido, Alejandro; Valero Cortés, Mateo (2005)
    Report de recerca
    Accés obert
    In Simultaneous Multithreaded (SMT) architectures most hardware resources are shared between threads. This provides a good cost/performance trade-off which renders these architectures suitable for use in embedded systems. ...

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