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Browsing by Author "Cortina, R."

Now showing items 1-5 of 5

An efficient and scalable block parallel algorithm of Neville elimination as a tool for the CMB maps problem

Alonso, P.; Cortina, R.; Ranilla, J.; Vidal Maciá, Antonio Manuel (Springer Verlag (Germany), 2012-02)

Abstract This paper analyses the performance of several versions of a block parallel algorithm in order to apply Neville elimination in a distributed memory parallel computer. Neville elimination is a procedure to transform ...
Detecting point sources in CMB maps using an efficient parallel algorithm

Alonso, P.; Argüeso, F.; Cortina, R.; Ranilla, J.; Vidal Maciá, Antonio Manuel (Springer Verlag (Germany), 2012-02)

The Cosmic Microwave Background (CMB) is a diffuse radiation which is contaminated by the radiation emitted by point sources. The precise knowledge of CMB fluctuations can lead to a better knowledge of the chemistry at the ...
Experiments with the NNMFPACK library: influence of beta parameter in the NNMF approximation error

San Juan Sebastián, Pablo; Vidal Maciá, Antonio Manuel; García Mollá, Víctor Manuel; Martínez Zaldívar, Francisco José; Ranilla, J.; Alonso, P.; Alonso-González, M.; Cortina, R. (CMMSE, 2015-07)

[EN] NnmfPack is a numerical library designed to compute efficiently the Non-Negative Matrix Factorization (NNMF). It has been conceived for shared memory heterogeneous parallel systems, and it supports, from its conception, ...
Neville elimination on multi- and many-core systems: OpenMP, MPI and CUDA

Alonso, P.; Cortina, R.; Martínez Zaldívar, Francisco José; Ranilla, J. (Springer Verlag (Germany), 2011-11)

[EN] This paper describes several parallel algorithmic variations of the Neville elimination. This elimination solves a system of linear equations making zeros in a matrix column by adding to each row an adequate multiple ...
Non-linear parallel solver for detecting point sources in CMB maps using Bayesian techniques

Alonso, P.; Argüeso, F.; Cortina, R.; Ranilla, J.; Vidal Maciá, Antonio Manuel (Springer Verlag (Germany), 2013-04)

Abstract In this work we present a suitable computational tool to deal with large matrices and solve systems of non-linear equations. This technique is applied to a very interesting problem: the detection and flux ...

Now showing items 1-5 of 5

Browsing by Author "Cortina, R."

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Browsing by Author "Cortina, R."