Results 1 - 10 of 12

Centrifuge: Integrated Lease Management and Partitioning for Cloud Services

by Atul Adya, John Dunagan, Alec Wolman - In Proceedings of USENIX NSDI , 2010
"... Abstract: Making cloud services responsive is critical to providing a compelling user experience. Many largescale sites, including LinkedIn, Digg and Facebook, address this need by deploying pools of servers that operate purely on in-memory state. Unfortunately, current technologies for partitioning ..."
Abstract - Cited by 17 (3 self) - Add to MetaCart
to a single server. However, in-memory server pools host an extremely large number of items, and granting a lease per item requires fine-grained leasing that is not supported in prior datacenter lease managers. This paper presents Centrifuge, a datacenter lease manager that solves this problem

Petrographic and Geochemical Evolution of Pervasively Altered Bushveld Granites at the Zaaiplaats Tin Mine

by P. J. Pollard, R. G. Taylor, R. P. Taylor, D. I. Groves
"... Tin with associated tungsten and rare earth element mineralization at the Zaaiplaats mine is hosted by alkali feldspar granites of the Lebowa Granite Suite which intrude granophyric granites of the Rashoop Granophyre Suite. From the upper contact downward the alkali feldspar granites include a margi ..."
Abstract - Cited by 1 (1 self) - Add to MetaCart
marginal pegmatite (stockscheider), the fine-grained Lease Granite, and the coarse-grained Bobbejaankop Granite. The major mineralization styles consist of subhor-izontal, tabular zones (low-grade orebodies) containing disseminated cassiterite in the Lease Granite, a zone of disseminated cassiterite

A longlived hydrothermal system in the Bushveld Granites at the Zaaiplaats tin mine: lead isotope evidence

by N. J. Mcnaughton, P. J. Poli_ard, D. I. Groves, R. G. Taylor - Economic Geology , 1993
"... Tin mineralization at Zaaiplaats is hosted in alkali feldspar granites of the Lebowa Granite Suite which intrude the Rashoop Granophyre Suite. From the upper contact downward, the alkali feldspar granites include the marginal pegmatite, fine-grained Lease Granite and the coarse-grained Bobbejaankop ..."
Abstract - Cited by 2 (1 self) - Add to MetaCart
Tin mineralization at Zaaiplaats is hosted in alkali feldspar granites of the Lebowa Granite Suite which intrude the Rashoop Granophyre Suite. From the upper contact downward, the alkali feldspar granites include the marginal pegmatite, fine-grained Lease Granite and the coarse-grained Bobbejaankop

Fine Grained Resource Reservation and Management In Grid Economics

by Kris Bubendorfer, Peter Komisarczuk, Kyle Chard, Ankur Desai - IN PROCEEDINGS OF THE 2005 INTERNATIONAL CONFERENCE ON GRID COMPUTING AND APPLICATIONS , 2005
"... Researchers have been actively looking at utilising new models for network based services. For enterprises and third party service providers can enable their infrastructure based on utility computing and next generation Internet technology to create dynamic virtual organisations. Small fixed and mob ..."
Abstract - Cited by 6 (4 self) - Add to MetaCart
and mobile, pervasive and ubiquitous devices will also benefit from networked services and computation provided by utility computing providers and the virtual organisations that lease resources from them. Additionally, we believe that it is critical that the virtual organisation and the mobile, pervasive

Virtual machine hosting for networked clusters: Building the foundations for ’autonomic’ orchestration

by Laura Grit, David Irwin, Aydan Yumerefendi, Jeff Chase - In Proc. VTDC ’06 , 2006
"... Virtualization technology offers powerful resource management mechanisms, including performance-isolating resource schedulers, live migration, and suspend/resume. But how should networked virtual computing systems use these mechanisms? A grand challenge is to devise practical policies to drive these ..."
Abstract - Cited by 55 (8 self) - Add to MetaCart
flexible factoring of resource management functions across the participants in a federated system, to accommodate a range of models of distributed virtual computing. We present extensions to Shirako to provision fine-grained virtual machine “slivers ” and drive virtual machine migration. We illustrate

Abstract The PRIMA System for Privilege Management, Authorization and Enforcement in Grid Environments

by unknown authors
"... Many grid usage scenarios depend on small, dynamic working groups for which the ability to establish transient collaboration with little or no intervention from resource administrators is a key requirement. The system developed, PRIMA, focuses on the issues of management and enforcement of fine-grai ..."
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Many grid usage scenarios depend on small, dynamic working groups for which the ability to establish transient collaboration with little or no intervention from resource administrators is a key requirement. The system developed, PRIMA, focuses on the issues of management and enforcement of fine-grained

The PRIMA System for Privilege Management, Authorization and Enforcement in Grid Environments

by unknown authors
"... Many grid usage scenarios depend on small, dynamic working groups for which the ability to establish transient collaboration with little or no intervention from resource administrators is a key requirement. The system developed, PRIMA, focuses on the issues of management, authorization, and enforcem ..."
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, and enforcement of finegrained privileges and authorization. Dynamic account creation and leasing as well as expressive enforcement mechanisms facilitate highly dynamic authorization policies and least privilege access to resources. PRIMA mechanisms enable the use of fine-grained access rights, reduce

A Block-Based Network File System

by A. McGregor, J. Cleary - In 21st Australasian Computer Science Conference , 1998
"... Currently most distributed file systems transfer messages about files between machines. The implementation of file system that uses a lower level, communications interface (BB-NFS) is described. This system uses a `block-based' interface that exchanges information about the blocks that make up ..."
Abstract - Cited by 1 (0 self) - Add to MetaCart
the file but not about the les themselves. It provides the Unix file system interface and demonstrates the feasibility and implementability of the block-based approach. The advantages of this approach include a reduction of the processing required at the server, uniformity in managing file blocks and fine-grained

Lightweight, Dynamic and Programmable Virtual Private Networks

by Rebecca Isaacs - in Proceedings of The Third IEEE Conference on Open Architectures and Network Programming (OPENARCH 00), Tel-Aviv , 2000
"... A Virtual Private Network (VPN) that exists over a public network infrastructure like the internet is both cheaper and more flexible than a network comprising dedicated semi-permanent links such as leased-lines. In contrast to leased-line private networks, the topology of such a VPN can be altered o ..."
Abstract - Cited by 4 (1 self) - Add to MetaCart
on-the-fly, and its lightweight nature means that creation and modification can take place over very short timescales. In a programmable networking environment, such VPNs can be enhanced with fine-grained customer control right down to the level of the physical network resources, allowing a VPN

Tiamat: Generative Communication in a Changing World

by Gareth P. Mcsorley, Huw Evans
"... Providing infrastructural support for pervasive computing environments is difficult due to their ever changing, resource-limited nature. In such environments, generative communications would be of benefit due to the decoupling the paradigm offers. This paper introduces Tiamat, a system which provide ..."
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, as well as a fine-grained resource management mechanism, via its leasing model. The Tiamat model is presented along with an overview of the current implementation. A set of challenges which must be faced when developing infrastructure for pervasive environments is presented. Future extensions to Tiamat
Results 1 - 10 of 12