Atmosphere simulation models usually have a regular program structure based on a regular grid decomposition of the physical space and regular computations. However some atmosphere or weather situations show a more irr...
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ISBN:
(纸本)0769512607
Atmosphere simulation models usually have a regular program structure based on a regular grid decomposition of the physical space and regular computations. However some atmosphere or weather situations show a more irregular behavior so that at the same simulation time there is more activity in some physical regions than in other regions. In this paper we investigate how the regular program structure can be adapted to more irregular weather situations to reduce the amount of computations. We study meteorological criteria to guide the computations and discuss the influence of the program change on load imbalances and the parallelization on distributed memory machines.
The different JAVA Web Services toolkit and the evaluation of their performance to analyze their suitability to gridcomputing was discussed. The actual de-facto web services standard framework, such as AXIS that was ...
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ISBN:
(纸本)1932415262
The different JAVA Web Services toolkit and the evaluation of their performance to analyze their suitability to gridcomputing was discussed. The actual de-facto web services standard framework, such as AXIS that was provided by Apache software foundation and two frameworks that aim at providing web services-like communication methods oriented to high performance computing were provided by the University of Indiana and the WSDL grid binding. The web services were oriented to transactions involving little amount of data where SOAP was the standard communication protocol used. It was found that the grid-oriented frameworks have better performances than AXIS.
This paper shows how the complex simulation of the multi-scale phenomena in aero-acoustics can be solved on distributed parallel super computing facilities. It points out the importance of scalable behaviour in all pa...
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ISBN:
(纸本)9781905088423
This paper shows how the complex simulation of the multi-scale phenomena in aero-acoustics can be solved on distributed parallel super computing facilities. It points out the importance of scalable behaviour in all parts of the simulation with respect to time and memory. Special emphasis is laid on memory usage, where a single peak anytime anywhere might result in the disability to run a simulation at all. Additionally, the parallel processing of connectivity creation for unstructured mesh information, a new file format is introduced, which allows for independent treatment of each element. With this preparatory work at hand, the concurrent simulation on multiple scales and different meshes is described.
作者：
Singh, Manjeet
Research Scholar Lingaya's Vidyapeeth Haryana India
gridcomputing is basically an infrastructure which provides high computational capacity to the distributed system by making use of widely geographically distributed resources. The resources in grid are owned by diffe...
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The goal of this paper is to enable near-realtime acquisition and processing of high resolution, high-quality, heterogeneous data from mobile and static sensing platforms to advance ocean exploration by providing infr...
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ISBN:
(纸本)9780769550411
The goal of this paper is to enable near-realtime acquisition and processing of high resolution, high-quality, heterogeneous data from mobile and static sensing platforms to advance ocean exploration by providing infrastructure for a distributedcomputing framework. Reaching this goal will improve the efficiency of monitoring dynamic oceanographic phenomena such as phytoplankton growth and rate of photosynthesis, salinity and temperature gradient, and concentration of pollutants. resource provisioning framework for organizing the heterogeneous sensing, computing, and communication capabilities of static and mobile devices in the vicinity in order to form an elastic resource pool a hybrid static/mobile computinggrid is presented. This local computinggrid can be harnessed to enable innovative data- and compute-intensive mobile applications such as onshore near-real-time data processing, analysis and visualization, mission planning and online ocean adaptive sampling.
The two main threads in distributedcomputing that recently show noticeable progress are gridcomputing and the development of Web-based services. It is our opinion that the adoption of the standards fostered by the w...
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ISBN:
(纸本)1892512459
The two main threads in distributedcomputing that recently show noticeable progress are gridcomputing and the development of Web-based services. It is our opinion that the adoption of the standards fostered by the web-service community could improve the level of usability and interoperability of grid systems and lead to the development of metacomputing systems based on reusable, interoperable components. Up to now the adoption of Web Services in grid projects has been limited to ancillary services and has never penetrated the core computational model that is still tightly tied to MPI and PVM. This is mainly due to the fact that Web Services use by default the SOAP protocol which is extremely ill suited to computational science applications. In this paper we show how we leveraged the Web Service Invocation Framework to develop a new high performance binding based on XDR coding.
Some popular computing technologies, such as ubiquitous computing, gridcomputing and thin-client computing, bring people to a much more distributed and pervasive. computing environment. Based on these innovative tech...
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ISBN:
(纸本)9780769526942
Some popular computing technologies, such as ubiquitous computing, gridcomputing and thin-client computing, bring people to a much more distributed and pervasive. computing environment. Based on these innovative technologies, a distributed virtual personal computing (DVPC) paradigm is coming into being. One of the fundamental challenges in the DVPC design is the virtually integrated but physically distributed desktop system. We proposed Redar, a remote desktop architecture for the DVPC. Redar integrates various user interfaces from diverse service nodes into one virtual desktop, and present the virtual desktop to the ultra-thin user client. The user interfaces currently supported by Redar include the application GUIs as well as the, mobile storage interfaces. The key components in Redar are the GUI merger, the virtual desktop manager, the ultra-thin-client and the transport protocols. We have implemented Redar in a DVPC prototype system. According to our evaluation, Redar shows perfect display latency, storage I/O, overhead, scalability and robustness.
In this paper, we describe an analysis tool based on the statistical environment R. gridR, which allows Using the collection of methodologies available as R packages in a grid environment. It provides the user with tr...
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In this paper, we describe an analysis tool based on the statistical environment R. gridR, which allows Using the collection of methodologies available as R packages in a grid environment. It provides the user with transparent and seamless access to large-scale distributed computational services and data repositories within the secure and reliable framework of a grid system. The aim of gridR, which was initiated in the context of the EU project Advancing Clinico-Genomics Trials on Cancer (ACGT), is to provide a powerful framework for the analysis of clinico-genomic trials involving large amount of data (e.g. microarray-based clinical trials). As a proof of the concept, in example of microarray-based analysis taken from the literature was reproduced Using gridR. (C) 2008 Elsevier B.V. All rights reserved.
Today, grid is one of major aspects in distributedcomputing environment, whose driving force is attributed to high performance computing, or CPU-cycle consuming computation. As a programming environment on grid, we i...
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ISBN:
(纸本)088986392X
Today, grid is one of major aspects in distributedcomputing environment, whose driving force is attributed to high performance computing, or CPU-cycle consuming computation. As a programming environment on grid, we introduce Hem(π), and propose using MPI as a programming model on a supercomputing network. This MPI programming environment works on a heterogeneous distributed environment, and can represent large scale resource consuming computation. Shape is used to define computing in Hem(π). In Hem(π), shape define computation as a coupled system of local MPI tasks and servers. Furthermore, remote accesses to memory and files which play central role in distributedcomputing are discussed.
distributedgrid applications are becoming more and more popular as the use of complex grid middlewares becomes extensive, and more facilities are offered by these complex pieces of software. But as grid middlewares g...
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ISBN:
(纸本)9781424403431
distributedgrid applications are becoming more and more popular as the use of complex grid middlewares becomes extensive, and more facilities are offered by these complex pieces of software. But as grid middlewares grow and offer more advanced features, they become more complex and weighty, as well as hard to tune. As the performance of a distributedgrid applications can be strongly influenced by the operation of the underlying grid middleware, it becomes importan to study and analyze their behaviour and performance. In this paper we present the eDragon Monitoring Framework (eDMF), a set of tools for instrumentation and analysis of grid middleware, that provides an unique environment to study the performance of grid applications. The eDMF is composed of a set of specialised monitoring tools as well as a flexible and powerful performance analysis platform. Additionally we also provide a practical application of the eDMF to the Globus Toolkit 4 (GT4), one of the most extended and popular grid middlewares, showing how it helped us in the detection and resolution of several job management problems observed in the GT4 middleware.
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