7,642 research outputs found
Grids, Clouds and Virtualization
No full textThis chapter introduces and puts in context Grids, Clouds, and Virtualization. Grids promised to deliver computing power on demand. However, despite a decade of active research, no viable commercial grid computing provider has emerged. On the other hand, it is widely believed—especially in the Business World—that HPC will eventually become a commodity. Just as some commercial consumers of electricity have mission requirements that necessitate they generate their own power, some consumers of computational resources will continue to need to provision their own supercomputers. Clouds are a recent business-oriented development with the potential to render this eventually as rare as organizations that generate their own electricity today, even among institutions who currently consider themselves the unassailable elite of the HPC business. Finally, Virtualization is one of the key technologies enabling many different Clouds. We begin with a brief history in order to put them in context, and recall the basic principles and concepts underlying and clearly differentiating them. A thorough overview and survey of existing technologies provides the basis to delve into details as the reader progresses through the book
Dall'Asta A, Ghi T, Rizzo G, Cancemi A, Aloisio F, Arduini D, Pedrazzi G, Figueras F, Frusca T
No full textCompendium Philosophiae Neo-Friburgensis
No full textContén: vol. I. Logica complectens logicam minorem seu formalem ac logicam maiorem cum criteriologia, (490, [16] p.) / Aloisio G. Peixoto Fortun
The Climate-G Portal: The context, key features and a multi-dimensional analysis
No full textGrid portals are web gateways aiming at concealing the underlying infrastructure through a pervasive,
transparent, user-friendly, ubiquitous and seamless access to heterogeneous and geographically spread
resources (i.e. storage, computational facilities, services, sensors, network and databases). The Climate-
G Portal is the web gateway of the Climate-G testbed (an interdisciplinary research effort involving
scientists both in Europe and US) and it is devoted to climate change research studies. The main goal
of this paper is to present the Climate-G Portal providing a complete understanding of the international
context, discussing its main requirements, challenges, architecture and key functionalities, and finally
carrying out and presenting a multi-dimensional analysis of the Climate-G Portal, starting from a general
schema proposed and discussed in this work
Science Fiction Universes as a Mirror of a Society Developing at Breakneck Speed
No full textVous trouverez ci-dessous le texte de ma communication donnée lors du colloque international Worlding SF. Cette communication reprend quelques éléments de mon article « Han Song : pour un retour sur Terre de la science-fiction » ((Loïc Aloisio, « Han Song : pour un retour sur Terre de la science-fiction », Monde chinois, vol. 51-52, no. 3, 2017, pp. 77-88.)). Today, I decided to focus on one author in particular: Han Song 韩松, who focuses on a especially interesting topic: the consequences of..
Measurement of G(phi -> eta' gamma)/G(phi -> eta gamma) and the pseudoscalar mixing angle
No full textA VLSI ‘rest’ processing element with improved bus connections (an evaluation)
No full textA highly parallel architecture based on ‘’ type processor elements () and designed to make good use of Very Large Scale Integration technology is proposed. The system is realized with 512 : the special structure of the single , each provided with the proper control firmware, allows to specialize, in the bootstrap phase, the functionality, implementing dynamically both and structures. The layout of a C-mos transmission-gate, for a special sub-unit (su), is presented. The single-cell transmission-gate, realized with 3 um technology, has a dimension of 68 um. The propagation time evaluation for the single cell is 3.2 us. As an example of the use of this structure the algorithm for computing the product of a 512∗512 matrix by a vector of 512 elements is also shown: the execution time for this algorithm is about 1 ms
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