Parallel And Distributed Computing
Mostrando 1-12 de 24 artigos, teses e dissertações.
-
1. Dynamic load-balancing : a new strategy for weather forecast models
Weather forecasting models are computationally intensive applications and traditionally they are executed in parallel machines. However, some issues prevent these models from fully exploiting the available computing power. One of such issues is load imbalance, i.e., the uneven distribution of load across the processors of the parallel machine. Since weather
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
-
2. Simulador eletromagnético em um ambiente de grades computacionais / Eletromagnetic simulator in a grid computing environment
The aim of this work is to develop the Pre and Post-Processing stages from an electromagnetic simulation suite, called SSAR-BR, and also a grid computational environment, which permits the execution of large electromagnetic problems. The processing stage, based in the Finite Difference Time Domain (FDTD) method, has been already developed as part of a doctor
Publicado em: 2010
-
3. An environment for distributed and parallel object-oriented programming for grid computing. / Um ambiente para programação orientada a objetos distribuídos e paralelos em grades computacionais.
Grid computing is already a reality both in academic and business world. Its use has become popular mainly because of the projects in this area and the advertising of products and software that offer this idea. Nevertheless, environments for development of object-oriented applications in Java for grid infrastructure are still scarce. Some initiatives offer l
Publicado em: 2009
-
4. Arquitetura de um sistema para integração de bancos de dados com suporte a replicação utilizando tecnologia de grades computacionais. / A resource monitoring and parallel application cooperative scheduling environment on computing grids.
Grid Computing have the goal of providing means to share resources to be used by applications that need these resources. The integration of geographically distributed databases can be obtained by sharing resources using grid computing technology. This work uses grid middlewares, specifically Globus Toolkit and OGSA-DAI, as well as other technologies as LDAP
Publicado em: 2009
-
5. Depuração simbólica extensível para sistemas de objetos distribuídos / Extensible symbolic debugging for distributed object systems
After over thirty years of intense research, debugging distributed systems is still regarded as a difficult task. While this situation could be partially blamed on the fact that concurrent executions are complex, the fast pace of evolution witnessed with distributed computing technologies have also played its by shortening the lifespan of many potentially us
Publicado em: 2008
-
6. "Armazenamento distribuído de dados e checkpointing de aplicações paralelas em grades oportunistas" / Distributed data storage and checkpointing of parallel applications in opportunistic grids
Grades computacionais oportunistas utilizam recursos ociosos de máquinas compartilhadas para executar aplicações que necessitam de um alto poder computacional e/ou trabalham com grandes quantidades de dados. Mas a execução de aplicações paralelas computacionalmente intensivas em ambientes dinâmicos e heterogêneos, como grades computacionais oportuni
Publicado em: 2007
-
7. Estudo de escalabilidade de servidores baseados em eventos em sitemas multiprocessados: um estudo de caso completo\" / Scalability study of event-driven servers in multi-processed systems: a complete case study
The explosive growth in the number of Internet users made software architects reevaluate issues related to the scalability of services deployed on a large scale. It is still challenging to design software architectures that do not experience performance degradation when the concurrent access increases. In this work, we investigate the impact of the operating
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/10/2006
-
8. A comparative study of workloads and policies for parallel job scheduling on clusters and grid computing / Um estudo comparativo de cargas de trabalho e políticas de escalonamento para aplicações paralelas em clusters e grids computacionais
Several scheduling policies for parallel applications directed to the distributed computational environments have been proposed. Although such policies present good results, they, generally, are evaluated in specific scenarios. When scenario change, by using different distributed environments and workload conditions, these policies can have its performance s
Publicado em: 2006
-
9. Security in grid computing / Segurança em grades computacionais
Grid computing is a concept that exploits the power of computer networks, with the specific aim of making virtual layers available that allow users to have access to highly demanding applications, as well as to adhere to large scale, highly diverse, virtual communities. Grid computing provides support for the execution of parallel applications, grouping toge
Publicado em: 2006
-
10. SISTEMA INTELIGENTE DE OTIMIZAÇÃO DE ALTERNATIVAS DE DESENVOLVIMENTO DE CAMPOS PETROLÍFEROS / INTELLIGENT SYSTEM FOR OPTIMIZATION OF ALTERNATIVES FOR PETROLEUM FIELDS DEVELOPMENT
This work investigates the problem of optimization of alternatives for petroleum fields` development. A development alternative refers to the way a well-known and delimited petroleum field is placed in production. This process involves the determination of the number, localization and scheduling of producer and injector wells. Thus, the optimization of alter
Publicado em: 2005
-
11. APLICAÇÃO DA PROGRAMAÇÃO ORIENTADA A OBJETOS E DA COMPUTAÇÃO DISTRIBUÍDA AO MEF PARA ANÁLISE DE ESTRUTURAS / APPLICATION OF THE OBJECT-ORIENTED PROGRAMMING AND DISTRIBUTED COMPUTING TO THE STRUCTURAL ANALYSIS BY THE FINITE ELEMENT METHOD
O objetivo deste trabalho é o de apresentar uma proposta de metodologia para a análise de estruturas pelo Método dos Elementos Finitos, utilizando-se na sua implementação as técnicas de programação orientada a objetos e computação distribuída. A utilização das técnicas de programação orientada a objetos permite a implementação de um código
Publicado em: 2005
-
12. InteGrade: Um Sistema de Middleware para Computação em Grade Oportunista / InteGrade: A Middleware System for Opportunistic Grid Computing
The past years witnessed a substantial increase in the need for computing power in various fields of human activity, including many industrial and academic endeavors. Grid Computing addresses those needs, providing seamless access to distributed computing resources, allowing one to use the combined computing power of various machines. However, the majority o
Publicado em: 2004