CAP - Grup de Computació d'Altes Prestacions
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.
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.
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.
Collections
-
Altres [1]
-
Articles de revista [261]
-
Capítols de llibre [28]
-
Llibres [3]
-
Reports de recerca [56]
Recent Submissions
-
Assembling a high-productivity DSL for computational fluid dynamics
(Association for Computing Machinery (ACM), 2019)
Conference report
Open AccessAs we move towards exascale computing, an abstraction for effective parallel computation is increasingly needed to overcome the maintainability and portability of scientific applications while ensuring the efficient and ... -
Wav2Pix: speech-conditioned face generation using generative adversarial networks
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Conference lecture
Restricted access - publisher's policySpeech is a rich biometric signal that contains information about the identity, gender and emotional state of the speaker. In this work, we explore its potential to generate face images of a speaker by conditioning a ... -
PROFET: modeling system performance and energy without simulating the CPU
(2019-06)
Article
Open AccessThe approaching end of DRAM scaling and expansion of emerging memory technologies is motivating a lot of research in future memory systems. Novel memory systems are typically explored by hardware simulators that are slow ... -
Application Acceleration on FPGAs with OmpSs@FPGA
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Conference report
Open AccessOmpSs@FPGA is the flavor of OmpSs that allows offloading application functionality to FPGAs. Similarly to OpenMP, it is based on compiler directives. While the OpenMP specification also includes support for heterogeneous ... -
Increasing the number of strides for conflict-free vector access
(1992-05)
Article
Open AccessAddress transformation schemes, such as skewing and linear transformations, have been proposed to achieve conflict-free vector access for some strides in vector processors with multi-module memories. In this paper, we ... -
Conflict-free strides for vectors in matched memories
(1991-12)
Article
Open AccessAddress transformation schemes, such as skewing and linear transformations, have been proposed to achieve conflict-free access to one family of strides in vector processors with matched memories. The paper extends these ... -
Evaluating the benefits of key-value databases for scientific applications
(Springer, 2019)
Conference report
Open AccessThe convergence of Big Data applications with High-Performance Computing requires new methodologies to store, manage and process large amounts of information. Traditional storage solutions are unable to scale and that ... -
Assessing the participatory design of a project-based course on computer network applications
Conference report
Open AccessNew teaching methodologies which foster student involvement, such as project-based learning, are nowadays part of the study curriculum of many engineering schools. Project-based learning courses, however, often build upon ... -
Studying the impact of the Full-Network embedding on multimodal pipelines
(IOS Press, 2018)
Article
Open AccessThe current state of the art for image annotation and image retrieval tasks is obtained through deep neural network multimodal pipelines, which combine an image representation and a text representation into a shared embedding ... -
Petri net analysis using boolean manipulation
(Springer, 1994)
Part of book or chapter of book
Open AccessThis paper presents a novel analysis approach for bounded Petri nets. The net behavior is modeled by boolean functions, thus reducing reasoning about Petri nets to boolean calculation. The state explosion problem is managed ... -
Look-ahead in the two-sided reduction to compact band forms for symmetric eigenvalue problems and the SVD
(2019-02-01)
Article
Open AccessWe address the reduction to compact band forms, via unitary similaritytransformations, for the solution of symmetric eigenvalue problems and the compu-tation of the singular value decomposition (SVD). Concretely, in the ... -
Two-sided orthogonal reductions to condensed forms on asymmetric multicore processors
(2018-10)
Article
Restricted access - publisher's policyWe investigate how to leverage the heterogeneous resources of an Asymmetric Multicore Processor (AMP) in order to deliver high performance in the reduction to condensed forms for the solution of dense eigenvalue and ...
RSS 1.0