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Grid technology in TORGA.net context

Castro, Rui; Lima, Ana; Marcos, Adérito
Fonte: konziel, agentur für kommunikation, B. Lukacin, Darmstadt, Germany Publicador: konziel, agentur für kommunikation, B. Lukacin, Darmstadt, Germany
Tipo: Artigo de Revista Científica
Publicado em /09/2005 ENG
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The TORGA.net - Trans Portugal Galicia Network - project is funded by Interreg III-A Community Initiative, Galicia North of Portugal Subprogramme involving the following partners: University of Vigo and Centro de Supercomputación de Galicia(CESGA) from Spain and University of Minho and Centro de Computação Gráfica (CCG) from Portugal. Its main objective is to build an efficient communication platform between the research and innovation communities of the South of Galicia and the North of Portugal, in order to encourage the collaboration between them and simplify the economic and social integration of this bordering zone.

TORGA.net : the trans Portugal-Galicia communication network

Lima, Ana L.; Castro, Rui; Santos, Alexandre; Marcos, Adérito Fernandes
Fonte: Bernard Lukacin Publicador: Bernard Lukacin
Tipo: Artigo de Revista Científica
Publicado em /04/2004 ENG
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The Trans Portugal Galicia Network Project, TORGA.net, was a proposal to the Program Interregional IIIA, Galicia – North of Portugal sub-program with the following partners: University of Minho, University of Vigo, Centro de Supercomputación de Galicia and the Centro de Computação Gráfica in Guimarães. It has as its main objective the creation of infrastructures and the organization and development of the space beyond borders. The project proposes to establish a broadband communication network with reduced operational costs that links the campuses of the Universities of Vigo and Minho, as well as their associated Technological Centers, which are the Supercomputación de Galicia and the Centro de Computação Gráfica in Guimarães. Using this telecommunications infrastructure, Access Centers will be installed in a Technology Access Grid, which will allow distance work sessions such as seminars, lessons, or discussion meetings.; Momentan arbeiten die Bildungs-, Forschungs- und Entwicklungs- Einrichtungen von Galicien und dem Norden von Portugal nur gelegentlich und auf einzelne Projekte beschränkt zusammen, obwohl sich längst herausgestellt hat, welche Synergien aus dieser Kooperation entstehen. Auf Grund dessen sieht das Torga.net Projekt die Implementierung einer Breitband- Kommunikations-Infrastruktur vor. Diese wird die Problematik...

Método de encaminamiento adaptativo en redes jerárquicas

Vallejo Gutiérrez, Enrique; Odriozola Olavarría, Miguel; García González, Marina; Beivide Palacio, Julio Ramón; Valero Cortés, Mateo; Labarta Mancho, Jesús
Fonte: Universidade de Cantabria Publicador: Universidade de Cantabria
Tipo: Patente
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Método de encaminamiento de paquetes en una red directa jerárquica formada por una pluralidad de encaminadores, cada uno con puertos de tipo local y puertos de tipo global; cada puerto comprende una pluralidad de canales virtuales; dichos encaminadores forman grupos, donde los diferentes encaminadores de un mismo grupo están interconectados mediante una topología conexa empleando enlaces de tipo local uniendo parejas de puertos de tipo local, y los diferentes grupos están interconectados mediante una topología conexa empleando enlaces de tipo global uniendo parejas de puertos de tipo global. El método está configurado para emplear saltos por dichos enlaces de acuerdo a rutas mínimas y no mínimas; los saltos que implican rutas no mínimas pueden realizarse tanto a través de enlaces globales como locales. El número de canales virtuales necesarios en cada puerto local y global viene determinado solamente por la longitud de una ruta máxima permitida que no emplea misrouting de tipo local, empleando para ello un orden total en el recorrido de los canales virtuales, que se viola cuando se realiza un misrouting local.; Solicitud: 201200715 (02.07.2012); Nº Pub. de Solicitud: ES2395955A1 (18.02.2013); Nº de Patente: ES2395955B2 (22.01.2014)

Method for adaptive routing in hierarchical networks; Método de encaminamiento adaptativo en redes jerárquicas

Vallejo Gutiérrez, Enrique; Odriozola Olavarría, Miguel; García González, Marina; Beivide Palacio, Julio Ramón; Valero Cortés, Mateo; Labarta Mancho, Jesús
Fonte: Universidade de Cantabria Publicador: Universidade de Cantabria
Tipo: Patente
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ABSTRACT. The invention relates to a method for routing packets in a hierarchical network formed by a plurality of routers, each router including local ports and global ports and each comprising a plurality of virtual channels. The routers form groups and the different routers from a single group are interconnected by means of a connection topology using local links joining pairs of local ports, and the different groups are interconnected by means of a connection topology using global links joining pairs of global ports. The method is configured to use hops through said links according to minimal and non-minimal routes. The hops that involve non-minimal routes can be made via both global and local links. The number of virtual channels required in each local and global port is determined simply by the length of a maximum allowed route that does not use local misrouting. For this purpose, a total order is used on the path of the virtual channels, which is violated when a local misrouting occurs.; RESUMEN. Método de encaminamiento de paquetes en una red directa jerárquica formada por una pluralidad de encaminadores, cada uno con puertos de tipo local y puertos de tipo global; cada puerto comprende una pluralidad de canales virtuales; dichos encaminadores forman grupos...

Topological characterization of the transition from laminar regime to fully developed turbulence in the resistive pressure-gradient-driven turbulence model

García Gonzalo, Luis; Carreras, Benjamín A.; Llerena, Irene; Calvo, Iván
Fonte: The American Physical Society Publicador: The American Physical Society
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em /10/2009 ENG
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For the resistive pressure-gradient-driven turbulence model, the transition from laminar regime to fully developed turbulence is not simple and goes through several phases. For low values of the plasma parameter β, a single quasicoherent structure forms. As β increases, several of these structures may emerge and in turn take the dominant role. Finally, at high β, fully developed turbulence with a broad spectrum is established. A suitable characterization of this transition can be given in terms of topological properties of the flow. Here, we analyze these properties that provide an understanding of the turbulence-induced transport and give a measure of the breaking of the homogeneity of the turbulence. To this end, an approach is developed that allows discriminating between topological properties of plasma turbulence flows that are relevant to the transport dynamics and the ones that are not. This is done using computational homology tools and leads to a faster convergence of numerical results for a fixed level of resolution than previously presented in Phys. Rev. E 78, 066402 (2008).; Part of this research was sponsored by the Dirección General de Investigación of Spain under Project No. ENE2006-15244-C03-01. One of us (BAC) is grateful for the "Cátedra de Excelencia" from Universidad Carlos III and Banco Santander. The authors thankfully acknowledge the computer resources...

Creación y validación de un cluster de computación científica basado en Rocks

Martínez Fernández, Ignacio
Fonte: Universidade Carlos III de Madrid Publicador: Universidade Carlos III de Madrid
Tipo: info:eu-repo/semantics/bachelorThesis; info:eu-repo/semantics/masterThesis Formato: application/pdf
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Cada vez más, resolvemos problemas cuya aproximación analítica es compleja, por lo que recurrimos a aproximaciones numéricas que reducen el problema a uno algebraico. Dicha representación algebraica suele ser computacionalmente costosa de resolver tanto en tiempo, como en memoria. Es, por tanto, deseable aumentar la capacidad computacional del sistema con el fín de poder analizar estos problemas. El desarrollo de la supercomputación ha propiciado y popularizado los clusters, facilitando la resolución de los problemas mencionados. Es objeto del presente Proyecto Fin de Carrera la creación y validación de un cluster de computación científica basado en Rocks. ___________________________________________; Increasingly, we solve problems whose analytical approach is complex, that's why we use numerical approximations reducing the problem to an algebraic one. This algebraic representation is often computationally expensive to resolve in time, as in memory. Therefore is desirable to increase the computing capacity of the system in order to be able to analyze these problems. The development of supercomputing has facilitated and popularized the clusters, facilitating the resolution of these issues. The purpose of this Final Proyect is creating and validating a scientific computing cluster based on Rocks.

Desarrollo e implementación de modelos de supercomputación

Fonte: RedCLARA Publicador: RedCLARA
Tipo: Artigo de Revista Científica Formato: PDF
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Este documento es la presentación del proyecto de “Desarrollo e Implementación de Modelos de Supercomputación” realizado durante el periodo de octubre de 2008 a septiembre de 2009, siendo el coordinador y ejecutor del proyecto, el Ing. Carlos Bran. Este documento recopila las actividades realizadas durante su ejecución, presentando el problema a resolver y como se logro el cumplimiento de sus objetivos. Se presenta además, la metodología que siguió cada una de las actividades.

e-Infraestructuras en Europa

Fonte: RedCLARA Publicador: RedCLARA
Tipo: Artigo de Revista Científica Formato: PDF
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Las actuales redes de investigación han propiciado la aparición de la e-Ciencia y de una nueva forma de investigar. Las e-Infraestructuras permiten nuevos retos con nuevas aplicaciones y todo un nuevo abanico de posibilidades. Se presentan las e-Infraestructuras europeas, su conexión global y en particular con Latinoamérica, su coordinación y la evolución que se está produciendo en este entorno.

Estudio sobre la situación del Software de Fuentes Abiertas en las Universidades y Centros de I+D españoles. 2009

Fonte: Madrid : Centro nacional de referecia de aplicación de las TIC basadas en Fuentes Abiertas (Cenatic), 2009. Publicador: Madrid : Centro nacional de referecia de aplicación de las TIC basadas en Fuentes Abiertas (Cenatic), 2009.
Tipo: Livro Formato: application/pdf
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211 p. : il. + col.; Este documento presenta información estratégica sobre la situación del Software de Fuentes Abiertas en las Universidades y Centros de I+D españoles que sin duda será de gran utilidad a los responsables de la toma de decisiones en estas organizaciones a la hora de valorar las posibilidades de este tipo de tecnología, así como comprender los beneficios que el Software de Fuentes Abiertas aporta no sólo en términos de costes económicos, sino en el desarrollo sostenible del software y la generación de metodologías colaborativas de trabajo, así como conocimientos y capacidades tecnológicas esenciales para la Sociedad de la Información.; Este informe muestra la situación de uso, implantación e investigación entorno al software de fuentes abiertas en las Universidades y los Centros I+D+i españoles. Para ello se han seleccionado una serie de Casos de Estudio relacionados con el software de fuentes abiertas en el entorno universitario y de investigación, que han sido documentados mediante entrevistas a responsables directamente implicados en cada iniciativa. La selección de los casos ha querido incluir diversidad geográfica, abarcando todas las Comunidades Autónomas españolas, y variedad temática...

On the numerical determination of Dunham’s coefficients: An application to X1R+HCl isotopomers

Letelier, J. R.; Senent, M. L.; Inostroza, N.
Fonte: ELSEVIER Publicador: ELSEVIER
Tipo: Artículo de revista
EN
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Rovibrational transition energies of the centrifugally distorted oscillator for the manifold of the HCl isotopomers are computed by means of an efficient variational–numerical method. The starting points are the potential energy surface determined using highly correlated ab initio calculations (RCCSD(T), MRCI+Q) and the aug-cc-pV6Z and the aug-cc-pCV5Z basis sets. From these data, it is shown how to calculate the mechanical and spectroscopic parameters corresponding to the ground electronic state of the diatomic molecule as well as the coefficients for the Dunham expansion. The relevance of the electronic correlation for an accurate description of the system and the effect of the core correlation are also discussed.; M.L. Senent and N. Inostroza acknowledge the MICINN (Spain) for the Grant No. AYA2008-00446. N. Inostroza acknowledges the fellowships MAEC-AECI. The authors acknowledge the ‘‘Centro de Supercomputación de Galicia, CESGA” for computing facilities.

Programación de alto desempeño del filtro C-MACE en una unidad de procesamiento gráfico

Baeza Martínez, Daniel Oscar
Fonte: Universidad de Chile Publicador: Universidad de Chile
Tipo: Tesis
ES
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Ingeniero Civil Electricista; En el presente trabajo de memoria se realiza una implementación del filtro CMACE (Correntropy- Minimum Average Correlation Energy) en una Unidad de Procesamiento Gráfico o GPU (Graphics Pro- cessor Unit), con el objetivo de reducir los costos computacionales asociados con la ejecución de este filtro. Los grandes tiempos de espera que tiene el filtro CMACE en su implementación en serie hace que esta herramienta sea poco práctica en la gran mayoría de los problemas de clasificación y reconocimiento de imágenes. La reducción de los costos computacionales mediante la implementación en GPU del fil- tro CMACE pretende hacer de este filtro una herramienta mucho más útil en problemas de ingeniería orientados al procesamiento de imágenes. La supercomputación mediante GPU está haciendo posible usar herramientas computacionalmente costosas en tiempos mucho más reducidos sin sacrificar las cualidades de los algoritmos. La implementación se realiza en una tarjeta Nvidia Tesla C2050, utilizando el lenguajes de progra- mación C y la extensión CUDA hecha por Nvidia para la programación de GPU. La implementación final del filtro es híbrida, en donde se mezclan implementaciones en GPU y CPU para aprovechar las características de cada uno de estos dispositivos en distintos tipos de procesamiento de datos. Además de la implementación...

Desarrollo de un cluster computacional para la compilación de algoritmos en paralelo en el Observatorio Astronómico

Parra Pérez, John Jairo
Fonte: Universidad Sergio Arboleda Publicador: Universidad Sergio Arboleda
Tipo: info:eu-repo/semantics/article; Artículo; info:eu-repo/semantics/publishedVersion Formato: application/pdf; application/pdf; documentos
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Este artículo muestra cómo funciona la supercomputación y además como esta puede contribuir al desarrollo de futuras investigaciones en varios campos del conocimiento, tomando para ello los recursos computacionales que brinda la Universidad y software que se encuentra libre en Internet. La razón por la cual se está desarrollando este proyecto es que sirva de herramienta para las futuras investigaciones a realizar en el Observatorio Astronómico.

Decabromobiphenyl (PBB-209) activates the aryl hydrocarbon receptor while decachlorobiphenyl (PCB-209) is inactive: experimental evidence and computational rationalization of the different behavior of some halogenated biphenyls

Alonso Giner, Mercedes; Casado, Susana; Miranda, Carlos; Tarazona, José V.; Navas, José M.; Herradón García, Bernardo
Fonte: American Chemical Society Publicador: American Chemical Society
Tipo: Artículo Formato: 88 bytes; text/plain
ENG
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16 pages, 9 figures, 7 tables.-- PMID: 18311929 [PubMed].-- Printed version published Mar 17, 2008.; This work was taken in part from the projected Ph.D. thesis of M.A. and S.C.; Supporting information available: Cartesian coordinates of the optimized geometries of the minima and transition states, experimental and calculated bond lengths and dihedral angles, aromaticity indices, Politzer’s descriptors, results (MSEPs, reactivity descriptors, and BDEs) calculated at the B3LYP/6-31+G(d,p) theory for PBB-209, PCB-209, PCB-169, and PCB-126, and calculation of the quadrupole moment. Available at: http://pubs.acs.org/doi/suppl/10.1021/tx700362u/suppl_file/tx700362u-file003.pdf; In rat H4IIE cells permanently transfected with a luciferase gene under the control of AhR, incubation with PBB-209 led to a statistically significant increase of luminescence. In this system, PCB-209 only caused a small induction of luciferase activity. In a fish cell line, only PBB-209 was able to provoke an induction of ethoxyresorufin-O-deethylase activity. Ligand binding to the AhR was studied by means of a cell-free in vitro system in which the activation of AhR is very unlikely to occur without ligand binding. None of the biphenyls studied provoked any activation of AhR in this system. To rationalize the results and to get insight into the molecular mechanism of activation of AhR by PBB-209 as compared with PCB-209...

Conserving GW scheme for nonequilibrium quantum transport in molecular contacts

Thygesen, Kristian S.; Rubio Secades, Ángel
Fonte: American Physical Society Publicador: American Physical Society
Tipo: Artículo Formato: 601770 bytes; application/pdf
ENG
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22 pp.-- PACS nrs.: 73.63.-b, 72.10.-d, 71.10.-w; We give a detailed presentation of our recent scheme to include correlation effects in molecular transport calculations using the nonequilibrium Keldysh formalism. The scheme is general and can be used with any quasiparticle self-energy, but for practical reasons, we mainly specialize to the so-called GW self-energy, widely used to describe the quasiparticle band structures and spectroscopic properties of extended and low-dimensional systems. We restrict the GW self-energy to a finite, central region containing the molecule, and we describe the leads by density functional theory (DFT). A minimal basis of maximally localized Wannier functions is applied both in the central GW region and the leads. The importance of using a conserving, i.e., fully self-consistent, GW self-energy is demonstrated both analytically and numerically. We introduce an effective spin-dependent interaction which automatically reduces self-interaction errors to all orders in the interaction. The scheme is applied to the Anderson model in and out of equilibrium. In equilibrium at zero temperature, we find that GW describes the Kondo resonance fairly well for intermediate interaction strengths. Out of equilibrium...

Neural networks as a tool to classify compounds according to aromaticity criteria

Alonso Giner, Mercedes; Herradón García, Bernardo
Fonte: John Wiley & Sons Publicador: John Wiley & Sons
Tipo: Artículo Formato: 88 bytes; text/plain
ENG
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11 pages, 8 figures, 3 tables.-- PMID: 17323387 [PubMed].-- Supporting information available: Correlations for all compounds, Correlations for compounds classified as aromatic by the Kohonen network, Factor Analysis for all compounds (N = 107), Factor Analysis for compounds classified as aromatic by the Kohonen network (N = 72), T-Test between NICS-NICS(1) for all compounds, T-Test between NICS-NICS(1) for compounds classified as aromatic by the Kohonen network, 9 pages. Available at: http://www.wiley-vch.de/contents/jc_2111/2007/f601101_s.pdf; Aromaticity is a fundamental concept in chemistry, with many theoretical and practical implications. Although most organic compounds can be categorized as aromatic, non-aromatic, or antiaromatic, it is often difficult to classify borderline compounds as well as to quantify this property. Many aromaticity criteria have been proposed, although none of them gives an entirely satisfactory solution. The inability to fully arrange organic compounds according to a single criterion arises from the fact that aromaticity is a multidimensional phenomenon. Neural networks are computational techniques that allow one to treat a large amount of data, thereby reducing the dimensionality of the input set to a bidimensional output. We present the successful applications of Kohonen's self-organizing maps to classify organic compounds according to aromaticity criteria...

The stationary frontal wave packet spontaneously generated in mesoscale dipoles

Viúdez, Álvaro
Fonte: American Meteorological Society; Allen Press Publicador: American Meteorological Society; Allen Press
Tipo: Artículo Formato: 131118 bytes; application/pdf
ENG
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14 pages, 21 figures.-- Full-text version available Open Access at: http://www.icm.csic.es/files/oce/almacen/papers/AR-2008-04.pdf; Three-dimensional numerical simulations of rotating, statically and inertially stable, mesoscale flows show that wave packets, with vertical velocity comparable to that of the balanced flow, can be spontaneously generated and amplified in the frontal part of translating vortical structures. These frontal wave packets remain stationary relative to the vortical structure (e.g., in the baroclinic dipole, tripole, and quadrupole) and are due to inertia–gravity oscillations, near the inertial frequency, experienced by the fluid particles as they decelerate when leaving the large speed regions. The ratio between the horizontal and vertical wavenumbers depends on the ratio between the horizontal and vertical shears of the background velocity. Theoretical solutions of plane waves with varying wavenumbers in background flow confirm these results. Using the material description of the fields it is shown that, among the particles simultaneously located in the vertical column in the dipole’s center, the first ones to experience the inertia–gravity oscillations are those in the upper layer, in the region of the maximum vertical shear. The wave packet propagates afterward to the fluid particles located below.; Partial support for this research has come from the Spanish Ministerio de Educación y Ciencia (Grant CGL2005-01450/CLI)...

On the dynamics of the H(+) + D2(v=0, j=0) --> HD + D(+) reaction: A comparison between theory and experiment

Carmona-Novillo, Estela; González Lezana, Tomás; Roncero, Octavio; Honvault, Pascal; Launay, Jean-Michel; Bulut, Niyazi; Aoiz, F. Javier; Bañares, Luis; Trottier, Alexandre; Wrede, Eckart
Fonte: American Institute of Physics Publicador: American Institute of Physics
Tipo: Artículo Formato: 1595516 bytes; application/pdf
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15 pages, 12 figures, 2 tables.-- PACS nr.: 82.30.Fi.; The H(+) + D2(v=0,j=0) --> HD + D(+) reaction has been theoretically investigated by means of a time independent exact quantum mechanical approach, a quantum wave packet calculation within an adiabatic centrifugal sudden approximation, a statistical quantum model, and a quasiclassical trajectory calculation. Besides reaction probabilities as a function of collision energy at different values of the total angular momentum, J, special emphasis has been made at two specific collision energies, 0.1 and 0.524 eV. The occurrence of distinctive dynamical behavior at these two energies is analyzed in some detail. An extensive comparison with previous experimental measurements on the Rydberg H atom with D2 molecules has been carried out at the higher collision energy. In particular, the present theoretical results have been employed to perform simulations of the experimental kinetic energy spectra.; N.B. acknowledges a postdoctoral fellowship by the Spanish Ministry of Education and Science (MEC) under the program "Estancias de jóvenes doctores y tecnólogos extranjeros en España". This work has been funded by MEC of Spain under Grant Nos. FIS2004-02461, CTQ2004-02415, and CTQ2005-08493-C02-01 and from the Comunidad de Madrid under the Contrato Programa Comunidad de Madrid- Universidad Complutense de Madrid (Grant No. 910729). A.T. and E.W. thank the EPSRC for financial support. The EQM calculations were performed on vector supercomputers...

Using a Jacobi–Davidson “Nuclear Orbital” Method for Small Doped 3He Clusters

Lara Castells, M. Pilar de; Mitrushchenkov, A. O.; Delgado Barrio, Gerardo; Villarreal, Pablo
Fonte: Springer Publicador: Springer
Tipo: Artículo Formato: 211283 bytes; application/pdf
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4 pages, 1 figure, 1 table.-- Article based on the presentation by P. Villarreal at the Fifth Workshop on Critical Stability, Erice, Sicily, Oct 13-17, 2008.-- Printed version published May 2009.; An efficient full configuration-interaction (CI) treatment has been recently developed as a benchmark quantum chemistry (QC) method to study doped 3He N clusters [J Chem Phys 125:221101, 2006]. The method, which uses an iterative Jacobi–Davidson diagonalization algorithm, is applied here to small clusters (N ≤ 4) containing Cl2 as dopant.; This work has been supported by the CICYT, MICINN-CSIC, andCSIC-CAM Spanish Grants Nos. FIS2007-62006, 2007501004, and CCG08-CSIC/ESP-3680. The Centro de Supercomputación de Galicia (CESGA) and the Red Española de Supercomputación (MareNostrum at BSC) are acknowledged for the use of their resources.; Peer reviewed

A theoretical study of He2ICl van der Waals cluster

Valdés, Álvaro; Prosmiti, Rita; Villarreal, Pablo; Delgado Barrio, Gerardo
Fonte: American Institute of Physics Publicador: American Institute of Physics
Tipo: Artículo Formato: 188012 bytes; application/pdf
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10 pages, 7 figures, 4 tables.-- PACS nrs.: 31.15.Dv; 33.15.Bh; 31.15.Ar; 33.15.Mt.; The structure, energetics, and dynamics of He2ICl complex in its ground state are studied by means of ab initio electronic structure and quantum-mechanical calculations. Interaction energies for selected He2ICl configurations are calculated at the coupled-cluster [CCSD(T)] level of theory using a large-core pseudopotential for the I atom and the aug-cc-pVTZ and aug-cc-pV5Z basis sets for the Cl and He atoms, respectively. The surface is characterized around its lower five minima and the minimum energy pathways through them. The global minimum of the potential corresponds to a "police-nightstick (1)" configuration, the second one to a linear, the next one to tetrahedral configuration, and the following two to "bifork" and "police-nightstick (2)" structures, with well depths of –99.12, –97.42, –88.32, –85.84, and –78.54 cm–1, respectively. An analytical form based on the sum of the three-body parametrized HeICl interactions plus the He–He interaction is found to represent very well the tetra-atomic CSSD(T) results. The present potential expression is employed to perform variational five-dimensional quantum-mechanical calculations to study the vibrational bound states of the van der Waals He2ICl complex. Results for total angular momentum J=0 provide the binding energy D(0) and the corresponding vibrationally averaged structure for different isomers of the cluster. Comparison of these results with recent experimental observations further justifies the potential used in this work.; The authors wish to thank the Centro de Calculo de IMAFF...

Una aproximación evolutiva a la planificación en entornos HPC basada en la incorporación de criterios subjetivos

Monroy Camafreita, Juan
Fonte: Universidade da Corunha Publicador: Universidade da Corunha
Tipo: Tese de Doutorado
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[Resumen] En el contexto de un centro de supercomputación, por muy elevados que sean los recursos, la demanda será siempre superior. Por ello, los usuarios deben realizar solicitudes para la ejecución de sus trabajos, que se ponen en espera hasta que el planificador del sistema decide pasarlos a ejecución. Pero, por desconocimiento o temor a que los trabajos sean abortados, estas solicitudes son normalmente muy imprecisas, dificultando la labor del planificador. Además, los planificadores son difíciles de configurar y en todo momento asumen que una planificación dada va a satisfacer de igual manera a todos los usuarios. En este trabajo se propone un sistema de planificación que utiliza técnicas de computación evolutiva para permitir la definición de políticas de planificación de manera más natural y estimar las necesidades reales de recursos para lograr planificaciones más precisas. Adicionalmente, se considera el concepto de calidad de servicio percibida, posibilitando la incorporación de criterios subjetivos en el proceso de planificación para mantener un alto nivel de satisfacción en el conjunto de usuarios y en el propio centro de supercomputación. Finalmente, se modelan diversos aspectos de los propios recursos computacionales mejorando aún más la precisión en la planificación...