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Evaluating the performance and intrusiveness of virtual machines for desktop gr...
Domingues, Patrício Rodrigues; Araújo, Filipe; Silva, LuísComunicação apresentada no 3rd Workshop on Desktop Grids and Volunteer Computing Systems, Rome, 2009. ; We experimentally evaluate the performance overhead of the virtual environments VMware Player, QEMU, VirtualPC and VirtualBox on a dual-core machine. Firstly, we assess the performance of a Linux guest OS running on a virtual machine by separately benchmarking the CPU, file I/O and the network bandwidth. The...
Dependability mechanisms for desktop grids
Domingues, Patrício RodriguesTese apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra para otenção do grau de Doutor em Engenharia Informática, orientada por Luís Moura e Silva. ; It is a well-known fact that most of the computing power spread over the Internet simply goes unused, with CPU and other resources sitting idle most of the time: on average less than 5% of the CPU time is effectively used. Desktop grids a...
Sabotage-tolerance and trust management in desktop grid computing
Domingues, Patrício; Sousa, Bruno; Silva, Luís MouraThe success of grid computing in open environments like the Internet is highly dependent on the adoption of mechanisms to detect failures and malicious sabotage attempts. It is also required to maintain a trust management system that permits one to distinguish the trustable from the non-trustable participants in a global computation. Without these mechanisms, users with data-critical applications will never rel...
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