Soft Computing Letters最新文献_第10页

On Deploying Scientific Software within the Grid-TLSE Project 关于在Grid-TLSE项目中部署科学软件

Soft Computing Letters Pub Date : 2005-03-06 DOI: 10.1163/1574040054861267

E. Caron, F. Desprez, M. Daydé, A. Hurault, M. Pantel

{"title":"On Deploying Scientific Software within the Grid-TLSE Project","authors":"E. Caron, F. Desprez, M. Daydé, A. Hurault, M. Pantel","doi":"10.1163/1574040054861267","DOIUrl":"https://doi.org/10.1163/1574040054861267","url":null,"abstract":"The main goal of the Grid-TLSE project is to design an expert site that provides an easy access to a number of sparse matrix solver packages allowing their comparative analysis on user-submitted problems, as well as on matrices from collections also available on the site. The site provide user assistance in choosing the right solver for its problems and appropriate values for the solver parameters. A computational Grid is used to deal with all the runs arising from user requests. After an overview of the project, we discuss on some of the main difficulties we face in Grid-TLSE: considering the amount of softwares that will be available, facilitating to facilitate their deployment and their exploitation over a Grid is crucial. We make use of an abstract meta-data based description of solvers and have introduced the concept of scenario, i.e. a high-level user assistance description that provides ways of discovering automatically the most appropriate solvers based on their description. The scenarios are used for generating the dynamic workflows that will be executed over the Grid and take advantage of some of the features available in the DIET Grid middleware. We also report on the introduction of a semantic-based component model for efficient service trading.","PeriodicalId":101169,"journal":{"name":"Soft Computing Letters","volume":"33 1","pages":"85-92"},"PeriodicalIF":0.0,"publicationDate":"2005-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74419931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Ab initio studies on the aromaticity of mixed tetramer neutral clusters 混合四聚体中性团簇芳香性的从头算研究

Soft Computing Letters Pub Date : 2005-03-06 DOI: 10.1163/157404005776611330

Sandeep Nigam, C. Majumder, S. K. Kulshreshtha

引用次数: 4

A theoretical study on size-dependent properties of rock-salt ZnS clusters 岩盐ZnS团簇尺寸依赖性的理论研究

Soft Computing Letters Pub Date : 2005-03-06 DOI: 10.1163/157404005776611457

Sougata Pal, Biplab Goswami, P. Sarkar

引用次数: 0

A Density Functional Study of Structures and Vibrations of Ta3O and Ta3O ta30o和ta30o结构与振动的密度泛函研究

Soft Computing Letters Pub Date : 2005-03-06 DOI: 10.1163/157404005776611420

P. Calaminici, R. Flores-Moreno, A. Köster

引用次数: 25

On the Euclidean Minimum Spanning Tree Problem 关于欧几里得最小生成树问题

Soft Computing Letters Pub Date : 2005-03-06 DOI: 10.1163/1574040053326325

S. Rajasekaran

引用次数: 11

CBSP: A Predictor of Sequences of Correlated Branches: A Way to Reduce Aliasing in Branch Prediction Tables CBSP:相关分支序列的预测器:一种减少分支预测表中混叠的方法

Soft Computing Letters Pub Date : 2005-03-06 DOI: 10.1163/1574040053326307

Thierry Haquin, Christine Rochange, P. Sainrat

{"title":"CBSP: A Predictor of Sequences of Correlated Branches: A Way to Reduce Aliasing in Branch Prediction Tables","authors":"Thierry Haquin, Christine Rochange, P. Sainrat","doi":"10.1163/1574040053326307","DOIUrl":"https://doi.org/10.1163/1574040053326307","url":null,"abstract":"All current processors are using branch prediction in order to better exploit the pipeline. Branch prediction is based on limited size tables and thus several branches are sharing the same entry which is made of a simple 2-bit counter. This is called aliasing. Aliased branch predictors are subject to destructive interferences and removing them by the addition of a tag identifying precisely a branch to a 2-bit counter is prohibitive. An entry of our prediction table is made of several counters which predict a sequence of consecutive correlated branches and not only one. Thus, a tag can be added to an entry at a lower cost since the tag is shared by several branches. Each time a sequence is retrieved in the prediction table, it provides several predictions. An annex tagless predictor is solicited when a sequence is not found in the sequence table. Collisions are avoided in the sequence table but, to achieve a misprediction rate as low as the one of the current uptodate predictors, several tables should be used, each table being indexed through a different branch history length. Among the predictions provided by the sequences, a priority mechanism selects the most accurate i.e.the one provided by the table with the longest history. Finally, having tagged entries allows us to implement an intelligent system that dynamically adapts the branch history lengths according to the applications.","PeriodicalId":101169,"journal":{"name":"Soft Computing Letters","volume":"57 1","pages":"15-29"},"PeriodicalIF":0.0,"publicationDate":"2005-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84881309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dissociative and Associative Attachment of CO, N2, and NO to Iron Clusters Fe4, Fe4–, and Fe4+ CO, N2和NO对Fe4, Fe4 -和Fe4+铁簇的解离和缔合附着

Soft Computing Letters Pub Date : 2005-03-06 DOI: 10.1163/157404005776611385

G. L. Gutsev, M. Mochena, C. W. Bauschlicher

引用次数: 3

Enhancement of fullerene stabilities from excited electronic states 从激发态增强富勒烯的稳定性

Soft Computing Letters Pub Date : 2005-03-06 DOI: 10.1163/157404005776611466

Z. Slanina, F. Uhlík, Shyi-Long Lee, L. Adamowicz, S. Nagase

{"title":"Enhancement of fullerene stabilities from excited electronic states","authors":"Z. Slanina, F. Uhlík, Shyi-Long Lee, L. Adamowicz, S. Nagase","doi":"10.1163/157404005776611466","DOIUrl":"https://doi.org/10.1163/157404005776611466","url":null,"abstract":"There is one factor in relative stabilities of isomeric fullerenes that has rarely been studied so far – contribution of excited electronic states. The contribution is clearly defined by the electronic partition function, supposing the related excitation energies can be evaluated. As temperatures in fullerene synthesis are high, the term should be taken into account. In this report the problem is studied on four isomeric systems. The first system is the set of five IPR (isolated pentagon rule) isomers of C78, relatively well known from experiment. The second system studied is a model set of four isomers of Mg@C72 (not yet isolated species). The third case consists of seven IPR isomers of C80. The last set is formed by six C74 cages. The electronic excitation energies are computed by limited configuration interaction (CI) approach, mostly with the ZINDO semiempirical method. Isomers of Mg@C72 are evaluated by means of the single-excitation CI or CI-Singles (CIS) in the standard LanL2DZ basis set. It is found that the electronic partition function can cause significant changes in the computed equilibrium relative concentrations of isomers at high temperatures. Metallofullerenes are more likely candidates for such enhanced effects.","PeriodicalId":101169,"journal":{"name":"Soft Computing Letters","volume":"1 5 1","pages":"304-312"},"PeriodicalIF":0.0,"publicationDate":"2005-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85523517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

Close-packing transitions in clusters of Lennard-Jones spheres Lennard-Jones球团簇中的密包跃迁

Soft Computing Letters Pub Date : 2005-03-06 DOI: 10.1163/157404005776611295

F. Calvo, M. Benali, V. Gerbaud, M. Hemati

引用次数: 4

How Important are High-Level ab initio Treatments for the Interaction Dipole Moment and Polarizability of Hene? 高水平从头计算对Hene的相互作用偶极矩和极化率有多重要?

Soft Computing Letters Pub Date : 2005-03-06 DOI: 10.1163/1574040054861249

P. Karamanis, G. Maroulis

引用次数: 10