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Listar por autor "Alvarruiz Bermejo, Fernando"

Mostrando ítems 1-14 de 14

Accurate Approximation of the Matrix Hyperbolic Cosine Using Bernoulli Polynomials

Alonso Abalos, José Miguel; Ibáñez González, Jacinto Javier; Defez Candel, Emilio; Alvarruiz Bermejo, Fernando (MDPI AG, 2023-02)

[EN] This paper presents three different alternatives to evaluate the matrix hyperbolic cosine using Bernoulli matrix polynomials, comparing them from the point of view of accuracy and computational complexity. The first ...
An economic and energy-aware analysis of the viability of outsourcing clustercomputing to a cloud

Alfonso Laguna, Carlos de; Caballer Fernández, Miguel; Alvarruiz Bermejo, Fernando; Moltó, Germán (Elsevier, 2013-03)

This paper compares the total cost of ownership of a physical cluster with the cost of a virtual cloudbased cluster. For that purpose, cost models for both a physical cluster and a cluster on a cloud have been developed. ...
An energy management system for cluster infrastructures

Alfonso Laguna, Carlos de; Caballer Fernández, Miguel; Alvarruiz Bermejo, Fernando; Hernández García, Vicente (Elsevier, 2013-11)

This paper presents a general energy management system for High Performance Computing (HPC) clusters and cloud infrastructures that powers off cluster nodes when they are not being used, and conversely powers them on when ...
EC3: Elastic Cloud Computing Cluster

Caballer Fernández, Miguel; Alfonso Laguna, Carlos de; Alvarruiz Bermejo, Fernando; Moltó, Germán (Elsevier, 2013-12)

This paper introduces Elastic Cloud Computing Cluster (EC3), a tool that creates elastic virtual clusters on top of Infrastructure as a Service (IaaS) Clouds. The clusters are self-managed entities that scale out to a ...
Efficient Modeling of Active Control Valves in Water Distribution Systems Using the Loop Method

Alvarruiz Bermejo, Fernando; Martínez Alzamora, Fernando; Vidal Maciá, Antonio Manuel (American Society of Civil Engineers, 2018)

[EN] This paper presents a novel approach to model pressure- and flow-regulating devices in the context of the Newton-Raphson loop method for water distribution network simulation. The proposed approach uses a symmetric ...
Efficient Simulation of Water Distribution Systems using OpenMP

Alvarruiz Bermejo, Fernando; Martínez Alzamora, Fernando; Vidal Maciá, Antonio Manuel (CMMSE, 2015-07)

[EN] Hydraulic solvers for the simulation of flows and pressures in water distribution systems (WDS) are used extensively, and their computational performance is key when considering optimization problems. This paper ...
Ejercicios de programación paralela con OpenMP y MPI

Román Moltó, José Enrique; Alonso Ábalos, José Miguel; Blanquer Espert, Ignacio; Guerrero López, David; Ibáñez González, Jacinto Javier; Ramos Peinado, Enrique; Alvarruiz Bermejo, Fernando (Editorial Universitat Politècnica de València, 2018-06-13)

Este libro recopila un conjunto de ejemplos de programación paralela, presentados de forma didáctica a modo de ejercicios resueltos.Las herramientas utilizadas son OpenMP y MPI,dos de las más utilizadas en la actualidad ...
Improvements to SLEPc in releases 3.14-3.18

Jose E. Roman; Alvarruiz Bermejo, Fernando; Campos, Carmen; Dalcin, Lisandro; Jolivet, Pierre; Lamas Daviña, Alejandro (Association for Computing Machinery, 2023-09)

[EN] This short article describes the main newfeatures added to SLEPc, the Scalable Library for Eigenvalue Problem Computations, in the past two and a half years, corresponding to five release versions. The main novelty ...
Improving the efficiency of the loop method for the simulation of water distribution networks

Alvarruiz Bermejo, Fernando; Martínez Alzamora, Fernando; Vidal Maciá, Antonio Manuel (American Society of Civil Engineers, 2015-10)

Efficiency of hydraulic solvers for the simulation of flows and pressures in water distribution systems (WDSs) is very important, especially in the context of optimization and risk analysis problems, where the hydraulic ...
Improving the performance of water distribution systems’ simulation on multicore systems

Alvarruiz Bermejo, Fernando; Martínez Alzamora, Fernando; Vidal Maciá, Antonio Manuel (Springer, 2016-01-18)

Hydraulic solvers for the simulation of flows and pressures in water distribution systems (WDS) are used extensively, and their computational performance is key when considering optimization problems. This paper presents ...
Parallel Computing in Water Network Analysis and Leakage Minimization

Alonso Ábalos, José Miguel; Alvarruiz Bermejo, Fernando; Guerrero López, David; Hernández García, Vicente; Ruiz Martínez, Pedro Antonio; Vidal Maciá, Antonio Manuel; Martínez Alzamora, Fernando; Vercher, Juan; Ulanick, Bogumil (American Society of Civil Engineers, 2000)

[EN] In this paper a parallel computing based software demonstrator for the simulation and leakage minimization of water networks is presented. This demonstrator, based on the EPANET package, tackles three different types ...
Reducción del Tiempo de Simulación de Redes de Distribución de Agua, mediante el Método de Mallas y la Computación de Altas Prestaciones

Alvarruiz Bermejo, Fernando (Universitat Politècnica de València, 2016-03-14)

[EN] Computer simulation of water distribution networks by means of mathematical models is nowadays an indispensable tool for the design and exploitation of those networks. Simulation is used not only for the design of new ...
Thick-restarted joint Lanczos bidiagonalization for the GSVD

Alvarruiz Bermejo, Fernando; Campos, Carmen; Roman, Jose E. (Elsevier, 2024-04)

[EN] The computation of the partial generalized singular value decomposition (GSVD) of large-scale matrix pairs can be approached by means of iterative methods based on expanding subspaces, particularly Krylov subspaces. ...
Use of an artificial neural network to capture the domain knowledge of a conventional hydraulic simulation model

Rao, Zhengfu; Alvarruiz Bermejo, Fernando (IWA Publishing, 2007-01)

[EN] As part of the POWADIMA research project, this paper describes the technique used to predict the consequences of different control settings on the performance of the water-distribution network, in the context of ...