Adaptive timeout discovery using the Network Weather Service - Trang 35-41
M.S. Allen, R. Wolski, J.S. Plank
In this paper we present a novel methodology for improving the performance and dependability of application-level messaging in Grid systems. Based on the Network Weather Service, our system uses nonparametric statistical forecasts of request-response times to automatically determine message timeouts. By choosing a timeout based on predicted network performance, the methodology improves application...... hiện toàn bộ
#Application software #Weather forecasting #Computer science #Testing #Dynamic scheduling #Degradation #Programming profession #Grid computing #Processor scheduling #Mesh generation
A batch script generator Web service for computational portals - Trang 421
S. Mock, K. Mueller, Choonhan Youn, M. Pierce, G. Fox, M. Thomas
Computational portal developers often reimplement functionality found in existing portals because there are no common discovery and access mechanisms in place to enable sharing of portal functions. The Web services architecture provides an implementation independent, protocol based mechanism for entities to find, share, and invoke remote services. We developed complementary web services at SDSC an...... hiện toàn bộ
#Web services #Portals #Service oriented architecture #System testing #Java #XML #Simple object access protocol #Computer architecture #Access protocols #Prototypes
Dynamic right-sizing in FTP (drsFTP): Enhancing Grid performance in user-space - Trang 42-49
M.K. Gardner, Wu-chun Feng, M. Fisk
With the advent of computational grids, networking performance over the wide-area network (WAN) has become a critical component in the grid infrastructure. Unfortunately, many high-performance grid applications only use a small fraction of the available bandwidth because operating systems and their associated protocol stacks are still tuned for yesterdays WAN speeds. As a result, network gurus und...... hiện toàn bộ
#Wide area networks #Computer networks #Grid computing #Bandwidth #Operating systems #Protocols #Automatic control #Control systems #Kernel #Throughput
A secure distributed search system - Trang 321-330
Yinglian Xie, D. O'Hallaron, M.K. Reiter
This paper presents the design, implementation and evaluation of Mingle, a secure distributed search system. Each participating host runs a Mingle server, which maintains an inverted index of the local file system. Users initiate peer-to-peer keyword searches by typing keywords to lightweight Mingle clients. Central to Mingle are its access control mechanisms and its insistence on user convenience...... hiện toàn bộ
#Indexing #File servers #Network servers #Access control #Distributed computing #Search engines #Computer science #Keyword search #File systems #Permission
A high-performance cluster storage server - Trang 311-320
K. Bell, A. Chien, M. Lauria
An essential building block for any data grid infrastructure is the storage server. In this paper we describe a high-performance cluster storage server built around the SDSC Storage Resource Broker (SRB) and commodity workstations. A number of performance critical design issues and our solutions to them are described. We incorporate pipeline optimizations into SRB to enable the full overlapping of...... hiện toàn bộ
#Grid computing #Network servers #Web server #Throughput #Geophysics computing #Middleware #Aggregates #High performance computing #Bandwidth #Internet
A comparison of TCP automatic tuning techniques for distributed computing - Trang 265-272
E. Weigle, Wu-chun Feng
Rather than painful, manual, static, per-connection optimization of TCP buffer sizes simply to achieve acceptable performance for distributed applications, many researchers have proposed techniques to perform this tuning automatically. This paper first discusses the relative merits of the various approaches in theory, and then provides substantial experimental data concerning two competing impleme...... hiện toàn bộ
#Distributed computing #Computer networks #Linux #Bandwidth #Protocols #Grid computing #Costs #Delay #Research and development #Laboratories
A case for proactivity in directory services - Trang 415
F.E. Bustamante, P. Widener, K. Schwan
In this paper, we argue that an exclusively inactive interface to directory services can hinder server scalability and indirectly restrict the behavior of potential applications. We propose to extend directory services' interfaces with a proactive mode by which clients can express their interest in (and be notified of) changes in the environment. These notification channels can be subsequently cus...... hiện toàn bộ
#Computer aided software engineering #Pervasive computing #Information filtering #Information filters #Distributed computing #Grid computing #Scalability #Educational institutions #Innovation management #Resource management
Evaluating Web services based implementations of GridRPC - Trang 237-245
S. Shirasuna, H. Nakada, S. Matsuoka, S. Sekiguchi
GridRPC is a class of Grid middleware for scientific computing. Interoperability has been an important issue, because current GridRPC systems each employ its own protocol. Web services, where XML-based standards such as SOAP and WSDL are expected to see widespread use, could be the medium of interoperability; however it is not clear if 1) XML-based schemas have sufficient expressive power for Grid...... hiện toàn bộ
#Web services #Simple object access protocol #Standardization #Computer industry #Scientific computing #Encoding #Memory management #Power system management #XML #Web server
Virtual services in data grids - Trang 420
A. Jagatheesan, R. Moore, A. Rajasekar, Bing Zhu
Data grids enable next generation scientific explorations that require intensive computation and analysis of petabyte-scale shared data collections. Apart from the challenge in creation and management of the data, another major challenge is the discovery of derived data products that have already been created. This work addresses the later challenge in minimizing response time and conserving the c...... hiện toàn bộ
#Grid computing #Service oriented architecture #Supercomputers #Distributed computing #Delay #Virtual prototyping #Computational modeling #Costs #Computational efficiency #Web server
A decentralized, adaptive replica location mechanism - Trang 24-32
M. Ripeanu, I. Foster
We describe a decentralized, adaptive mechanism for replica location in wide-area distributed systems. Unlike traditional, hierarchical (e.g, DNS) and more recent (e.g., CAN, Chord, Gnutella) distributed search and indexing schemes, nodes in our location mechanism do not route queries, instead, they organize into an overlay network and distribute location information. We contend that this approach...... hiện toàn bộ
#Delay #Computer science #Indexing #Data analysis #Telecommunication traffic #Internet #Mathematics #Laboratories #Protocols #Scheduling