Abstract Two-level Schwarz domain decomposition methods are very powerful techniques for the efficient numerical solution of partial differential equations (PDEs). A two-level method requires two main components: a one-level preconditioner (or its corresponding smoothing iterative method), which is based on techniques, and coarse correction step, relies space. The space must properly represent ...

Reservoir models with many grid blocks suffer from long run time; it is hence important to deliberate a method to remedy this drawback. Usual upscaling methods are proved to fail to reproduce fine grid model behaviors in coarse grid models in well proximity. This is attributed to rapid pressure changes in the near-well region. Standard permeability upscaling methods are limited to systems with ...

Computing grids must deliver non-trivial qualities of service, in terms of response time, security, reliability, and coordination of various grid resources. Grid meta-schedulers play a crucial role into the execution of applications, because they match grid application jobs with available grid resources. However, a typical grid application is not an isolated single grid job, but a composition o...

Im Bereich des Grid Computing stehen Workflows im Fokus zahlreicher Projekte. Allein auf europäischer Ebene wurden und werden viele Projekte zur Entwicklung von geeigneten Werkzeugen, Sprachen und Laufzeitumgebungen für Workflows im GridComputing gefördert. Der dritte Grid Workflow Workshop adressiert sowohl wissenschaftliche als auch betriebliche Workflows im Umfeld des Grid-Computing. Diese d...

although lcl filters are used widely in the grid connected inverters to reduce high-orderharmonics, such a system increases system order and therefore sustainable design of closed-loopcontroller system will be complicated. recently, the single-loop control strategy has beensuggested for l or lc filter based grid-connected inverters. however, the use of single-loopcontrol directly in lcl filter-...

we consider a grid network where nodes contain small buffers. a packet that faces a crowded buffer in its route will get extra latency and may be dropped. in this paper, we propose a novel flow control protocol called rfcc for grid networks. rfcc tries to reroute delayed packets and utilizes network coding to introduce a configurable amount of redundant information in the network, thereby incre...

establishing a network of transit routes with satisfactory demand coverage is one of the main goals of transitagencies in moving towards a sustainable urban development. a primary concern in obtaining such anetwork is reducing operational costs. this paper deals with the problem of minimizing construction costsin a grid transportation network while satisfying a certain level of demand coverage....

Grid systems integrate distributed resources to form self-organization and self-management autonomies. With the widespread development of grid systems around the world, grid collaboration for largescale computing has become a prevalent research topic. In this paper, the authors propose a meta-grid framework, named the Grid-to-Grid (G2G) framework, to harmonize autonomic grids in realizing a gri...

—Grid computing has attracted many researchers over a few years, and as a result many new protocols have emerged and also evolved since its inception a decade ago. Grid protocols play major role in implementing services that facilitate coordinated resource sharing across diverse organizations. In this paper, we provide comprehensive coverage of different core Grid protocols that can be used in ...