Resumo e resenha do artigo "C-Meter: A Framework for Performance Analysis of Computing Clouds"

O artigo considera que existe uma deficiência de frameworks para a avaliação de desempenho. Ele comenta que os requisitos para esses frameworks são:

1. Geração e submissão de cargas de trabalhos reais e sintéticas
2. comparação dos resultados com outros ambientes, como clusters e grids
3. Prover funcionalidades básicas de gerenciamento de recursos

O artigo comenta também sobre o Amazon EC2, e sobre o GrenchMark, que é um framework para submissão de cargas de trabalho para grid.
A proposta do artigo é desenvolver o C-Meter, uma extensão do GrenchMark, para submissão de cargas de trabalho para teste para computação em nuvem.
É descrita a arquitetura do C-Meter, que é composto por três subsistemas: núcleo, interação da nuvem e utilitários. O framework foi desenvolvido em Python.
Como experimentos, foram analisadas três situações: overhead de aquisição e liberação de recursos, desempenho de diferentes configurações, e o desempenho de dois algoritmos de escalonamento. Esses testes foram realizados em 20 instâncias no EC2. Como métricas de desempenho foram utilizadas tempo de resposta, o tempo de espera na fila, e o tempo de execução do trabalho.

O artigo é um bom ponto de partida para quem quiser trabalhar métricas sobre um ambiente de computação em nuvem. Além de uma metodologia explicada, há referências bibliográficas que auxiliam no entendimento. Uma boa idéia que o artigo sugere seria a construção de um ambiente de nuvem, a seleção de métricas, o desenvolvimento de um benchmark específico para nuvem, que atenda às três recomendações para um framework desse tipo, e uma bateria de testes, com avaliação dos resultados.

Artigo: "C-Meter: A Framework for Performance Analysis of Computing Clouds"
Autores: Yigitbasi, N., Iosup, A., Epema, D. & Ostermann, S.
Ano: 2009
Journal \ Proceedings: Proceedings of the 2009 9th IEEE/ACM International Symposium on Cluster Computing and the Grid, pp. 472-477

Previsão do Google para Cloud Computing

Mais um aplicativo do Google: Google Trends.
Colocando a tag "Cloud Computing", temos o tráfego no Google.

Outra aplicação é o Google Insights:

The 3rd International Workshop on Security in Cloud Computing (CloudSec 2011)

Taipei, Taiwan, September 13 – 16, 2011

The 3^rd International Workshop on Security in Cloud Computing (CloudSec 2011)

http://bingweb.binghamton.edu/~ychen/CloudSec2010.htm

In Conjunction with 40^th International Conference on Parallel Processing (ICPP 2011)

http://icpp2011.org

Cloud Computing has generated interest from both industry and academia since 2007. As an extension of Grid Computing and Distributed Computing, Cloud Computing aims to provide users with flexible services in a transparent manner. Services are allocated in a “cloud”, which is a collection of devices and resources connected through the Internet. Before this paradigm can be widely accepted, the security, privacy and reliability provided by the services in the cloud must be well established.

CloudSec’2011 will bring researchers and experts together to present and discuss the latest developments and technical solutions concerning various aspects of security issues in Cloud Computing. CloudSec’2011 seeks original unpublished papers focusing on theoretical analysis, emerging applications, novel system architecture construction and design, experimental studies, and social impacts of Cloud Computing. Both review/survey papers and technical papers are expected.

CloudSec’2011 also welcomes short papers related to Security in Cloud Computing, which summarize speculative breakthroughs, work-in-progress, industry featured projects, open problems, new application challenges, visionary ideas, and preliminary studies.

The topics include but not limited to:

•        Emerging threats to cloud-based services

•        Security models for new services

•        Cloud-aware web service security

•        Information hiding in Cloud Computing

•        Securing distributed data storage in the cloud

•        Privacy and security in Cloud Computing

•        Forensics

•        Robust network architecture

•        Cloud Infrastructure Security

•        Job deployment in the Cloud

•        Intrusion detection/prevention

•        Denial-of-Service (DoS) attacks and defense

•        Robust job scheduling

•        Secure resource allocation and indexing

•        Secure payment for cloud-aware services

•        User authentication in cloud-aware services

•        Security for emerging cloud programming models

GridGain Cloud Computing com SCALA

Segue apresentação que ocorreu no dia 05/10/2010 na FA7, o Café com Tapioca de outubro, com a participação especial de Dmitriy Setrakyan, CTO da GridGain Systems.
Também ocorreu a palestra do Édson Patrício, da Verde Tecnologia, sobre Scala.

Aventuras em Salvador (2010)

Entre os dias 27 de setembro a 01 de outubro ocorreu o CBSOFT 2010 em Salvador.
Como era de se esperar, em paralelo, ocorreram também alguns "eventos" extra oficiais.

Legenda, da esquerda para a direita: Forte de São Marcelo, Dique do Tororó, Igreja do Nosso Senhor do Bonfim, Lagoa do Abaeté, Projeto Tamar na praia do Forte, Praça Castro Alves (é aquela mesma da "... A Praça Castro Alves é do povo..."), Farol da Barra, Elevador Lacerda. No centro, a Igreja de São Francisco no Pelourinho e uma vista do litoral de Salvador.

OpenNebula 2.0

Saiu a nova versão do OpenNebula (2.0).

Algumas características:

• Image Repository. The Image Repository allows users to easily specify disk images from a catalog without worrying about low-level disk configuration attributes or block device mapping. Also, image access control is applied to the images registered in the repository, hence simplifying multi-user environments and image sharing. The traditional method of specifying VM disks is also fully supported. More info…

• MySQL support. OpenNebula can now work with either a MySQL or SQLite database backend. The new MySQL support brings important performance and scalability improvements compared to the SQLite implementation. MySQL is the recommended option for large-scale clouds. More info…

• Improved VMWare support. VMware drivers has been re-written to make use of all the features offered by OpenNebula, making the functionality of the drivers on par with the KVM and Xen ones. The new drivers uses the libvirt driver. More info…

• Scalability Improvements. Several components of OpenNebula have been tuned to work with tens of thousands of VMs, including the redesign of the scheduler and adjustments to the monitoring modules.

• Separate VM and Information actions. The specific operations performed when monitoring a host or performing an specific operation on a VM has been decoupled from the driver code base. Now it is even easier to tune your cloud. The number of connections to the node have also been reduced.

• Cluster support. Physical hosts can now be grouped in logical clusters, so after a cluster is defined it can be used to set the placement of a VM. More info…

• Accounting. New tools are provided to generate accounting reports for cloud users or physical hosts. More info…

• Authorization & Authentication Drivers. The authorization and authentication processes in OpenNebula have been totally redesigned. Now they can be handled natively by the OpenNebula core, offering the same functionality as OpenNebula 1.4. Alternatively, the A&A processes can be handled by an external component that can be integrated with any A&A system or user maps (e.g. LDAP, Kerberos…). As an example OpenNebula 2.0 features a quota based authorization module and user authentication based on RSA keys. More info…

• Quota Management. Allowing cloud administrators to set limits on cloud resources for users

• LDAP Integration. Levering the new authorization & authentication framework, datacenters using LDAP for user management can integrate OpenNebula with it, without the need of re-creating the user data. More info…

• Virtual Networking Improvements. OpenNebula 2.0 lets you define generic attributes associated to a Virtual Network (e.g. gateway, dns servers…) that can then be included in the context of a VM. This will let you easily configure VMs with multiple NICs. Additionally Virtual Networks can now be defined as public, and thus shared among multiple users.

• Improved EC2 support. The EC2 Query server can now be used with the EC2 ecosystem. Supported third party applications include ElasticFox or EucaTools. More info…

• Java Bindings for the OpenNebula Cloud API (OCA) OpenNebula 2.0 includes JAVA bindings that wraps the XML-RPC interface methods exposed by the core. More info…

• Improved OCCI support. The OCCI implementation now follows a more coherent schema. The OCCI server also makes a more robust handling of incoming requests. More info…

Aparentemente a versão 1.4 e 2.0 não são compatíveis, devido à mudanças no esquema do banco e na API, sendo indicado a atualização.

Hosts, redes ou máquinas virtuais instalados no OpenNebula 1.4 não vão funcionar mais com esta versão, e devem ser recriados no novo sistema.

Fonte: http://blog.opennebula.org/?p=914

Journal of Internet Services and Applications - JISA

Call for Papers 

Journal of Internet Services and Applications
Special Issue on Cloud Computing
Springer's Journal of Internet Services and Applications (JISA) will publish a special issue on Cloud Computing. 

Cloud Computing is a form of Internet-based computing that explores new models for consumption and delivery of computing resources, software, and services. This new paradigm has been receiving great attention from the research community and industry, due to its potential to trigger significant change in the computing industry.

Cloud computing introduces challenges and new possibilities in many aspects of Internet architecture, protocols, services, and applications. As such, we invite submissions on Cloud Computing topics related to Internet
Services and applications including but not limited to the following:

• Virtualization technology, including image and appliance management;
• Automated provisioning/management of infrastructure and services;
• Availability, resilience, dependability, scalability;
• Networking and storage;
• Resource Management, Performance, Benchmarking;
• Grid Computing, Scientific Applications, High Performance Computing;
• Infrastructure as a Service, Platform as a Service, Software as a Service;
• Security and privacy;
• Cloud Middleware;
• Data management in the cloud;
• Cloud economics and pricing;
• Cloud-client interaction;
• Programming models and new cloud applications. 

Submission Deadline: November, 8th 2010 (Early submission is encouraged)
Publication Date: 1st Semester, 2011 

Special Issue Guest-Editors
Dilma Da Silva (IBM Research, USA)
Dan Reed (Microsoft Research, USA)
Dongyan Xu (Purdue University, USA) 

JISA Editors-in-Chief
Fabio Kon (University of São Paulo, Brazil)
Gordon Blair (Lancaster University, UK) 

Submission Details
Manuscripts are submitted online as described in www.springer.com/jisa and are typically 14
two-column pages in length, and should not exceed 20 pages. 

The guest editors can be contacted at jisa.cloud.comput...@gmail.com
JISA is a peer-reviewed international journal that publishes high-quality scientific papers (addressing both theory and practice) covering all aspects of the Internet architecture, protocols, services, and applications. JISA is a partnership among Springer, the Brazilian Internet Steering Committee (CGI.br), the National Computer Networks Laboratory (LARC), and the Brazilian Computer Society (SBC).