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clOpenCL : supporting distributed heterogeneous computing in HPC clusters
Alves, Albano Agostinho Gomes; Rufino, José; Pina, António Manuel Silva; Santos, Luís PauloClusters that combine heterogeneous compute device architectures, coupled with novel programming models, have created a true alternative to traditional (homogeneous) cluster computing, allowing to leverage the performance of parallel applications. In this paper we introduce clOpenCL, a platform that supports the simple deployment and efficient running of OpenCL-based parallel applications that may span several ...
clOpenCL - supporting distributed heterogeneous computing in HPC clusters
Alves, Albano; Rufino, José; Pina, António; Santos, Luis PauloClusters that combine heterogeneous compute device architectures, coupled with novel programming models, have created a true alternative to traditional (homogeneous) cluster computing, allowing to leverage the performance of parallel applications. In this paper we introduce clOpenCL, a platform that supports the simple deployment and efficient running of OpenCL-based parallel applications that may span several ...
Running user-provided virtual machines in batch-oriented computing clusters
Oliveira, Vítor; Pina, António Manuel Silva; Rocha, AndréThe use of virtualization in HPC clusters can provide rich software environments, application isolation and efficient workload management mechanisms, but system-level virtualization introduces a software layer on the computing nodes that reduces performance and inhibits the direct use of hardware devices. We propose an unobtrusive user-level platform that allows the execution of virtual machines inside batch j...
A WCS-based approach to integrate satellite imagery data in wildfire simulation
Esteves, António; Pina, António Manuel SilvaThis paper describes the integration of multi-dimensional data from satellite sensors in a Civil Protection application that simulates fire spread. The approach uses standard Web Coverage Services from OGC to fetch and process land cover and recently burned areas, available in the form of satellite imagery data previously captured by the MODIS sensor, to automatically generate renovated fuel maps. The proposed ...
Even bigger data : preparing for the LHC/ATLAS upgrade
Oliveira, Vítor; Pina, António Manuel Silva; Castro, N.; Onofre, A.; Veloso, F.The Large Hadron Collider’s (LHC) experiments’ data volume is expected to grow one order of magnitude following the machine operation conditions upgrade in 2013-2014. The challenge to the scientific results of our team is: i) how to deal with a 10-fold increase in the data volume that must be processed for each analysis, while ii) supporting the increase in the complexity of the analysis applications, iii) redu...
Diversificação de risco entre acções e futuros de commodities
Pina, António José FerreiraO principal objectivo desta investigação foi de verificar se a inclusão de futuros de commodities na carteira do investidor traria benefícios para esta, tendo por base a perspectiva do investidor português. Foram para isso realizados testes para averiguar se os benéficos eram estatisticamente significativos. Também se construíram carteiras e estudados os seus desempenhos por forma a responder ao nosso propósito...
A geographical information system for wild fire management
Pina, António Manuel Silva; Esteves, António; Puga, Joel; Oliveira, Vítorhe CROSS-Fire project focus on developing a grid-based framework for wild fire management using FireStation (FS) as a standalone application that simulates the fire spread over complex topography. The overall software development is made of several components: client applications, which request geo-referenced data and fire spread simulation, Spatial Data Infrastructures (SDI), which provide geo-referenced data...
An automated cluster/grid task and data management system
Miranda, Luís; Sá, Tiago; Pina, António Manuel Silva; Oliveira, VítorCROSS-Fire is a research project focused on wildfire management related topics, that defines an architecture integrating three main components: the CROSS-Fire Platform, implemented as an OGS-WS compatible Web Processing System layer; a Spatial Data Infrastructure platform; a Distributed Computing Infrastructure, supporting both cluster and grid environments. The main objective is to exploit Cluster/Grid middlew...
Estratégias de marketing para o enoturismo português
Pina, António José da SilvaO enoturismo, nas principais regiões vitivinícolas mundiais, é um produto turístico em franca expansão apresentando elevadas taxas de crescimento anual. A literatura existente sobre esta temática identifica as motivações e as razões do crescimento da procura numa actividade em os investimentos são elevados e na maioria dos casos totalmente privados. Portugal tem potencial no enoturismo, comparável à França ...
Cross-Fire : a grid platform to integrate geo-referenced web services for real-...
Pina, António Manuel Silva; Oliveira, B.; Ribeiro, Luís Mário; Puga, Joel; Esteves, António; Proença, Alberto José; Viegas, Domingos X.Fire propagation simulation tools are useful at different levels of forest fire management. From prescribed fire planning to fuel hazard assessment or to the development of fire suppression strategies on wildfires or even training activities. Nevertheless, real time use of such tools is still very limited among the operational authorities for several reasons: lack of good real time data, lack of training or eve...
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