Browsing by Author "Filho, Manoel C. Silva"
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- Approaches for Optimizing Virtual Machine Placement and Migration in Cloud EnvironmentsPublication . Filho, Manoel C. Silva; Monteiro, Cláudio C.; Inácio, Pedro R. M.; Freire, MárioCloud computing is a model for providing computing resources as a utility which faces several challenges on management of virtualized resources. Accordingly, virtual machine placement and migration are crucial to achieve multiple and conflicting goals. Regarding the complexity of these tasks and plethora of existing proposals, this work surveys the state-of-the-art in the area. It presents a cloud computing background, a review of several proposals, a discussion of problem formulations, advantages and shortcomings of reviewed works. Furthermore, it highlights the challenges for new solutions and provides several open issues, showing the relevancy of the topic in an increasing and demanding market.
- CloudSim Plus: a Cloud Computing Simulation Framework Pursuing Software Engineering Principles for Improved Modularity, Extensibility and CorrectnessPublication . Filho, Manoel C. Silva; Oliveira, Raysa L.; Monteiro, Cláudio C.; Inácio, Pedro R. M.; Freire, MarioCloud computing is an established technology to provide computing resources on demand that currently faces several challenges. Main challenges include management of shared resources, energy consumption, load balancing, resource provisioning and allocation, and fulfilment of service level agreements (SLAs). Due to its inherent complexity, cloud simulation is largely used to experiment new models and algorithms. This work presents CloudSim Plus, an open source simulation framework that pursues conformance to software engineering principles and object-oriented design in order to provide an extensible, modular and accurate tool. Based on the CloudSim framework, it aims to improve several engineering aspects, such as maintainability, reusability and extensibility. This work shows the benefits of CloudSim Plus, its particular features, how it ensures more accuracy, extension facility and usage simplicity.