A software package is introduced to aid in the teaching of courses in parallel processing, particularly topics such as software distributed shared memory, memory consistency models, and synchronization mechanisms. the...
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Analyzing large data sets is gaining more importance because of its wide variety of applications in parallel and distributed environment. Hadoop environment gives more flexibility to programmers in parallelcomputing....
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ISBN:
(纸本)9789811031564;9789811031557
Analyzing large data sets is gaining more importance because of its wide variety of applications in parallel and distributed environment. Hadoop environment gives more flexibility to programmers in parallelcomputing. One of the advantages of Hadoop is query evaluation over large datasets. Join operations in query evaluation plays a major role over the large data. this paper Ferret outs the earlier solutions, prolongs them and recommends a new approach for the implementation of joins in Hadoop.
In order to obtain efficiency, current practice in distributed software systems design often suffers from a lack of abstraction. An object-oriented design technique based on UML notations and a special type of high-le...
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ISBN:
(纸本)0769506348
In order to obtain efficiency, current practice in distributed software systems design often suffers from a lack of abstraction. An object-oriented design technique based on UML notations and a special type of high-level Petri-Nets is used to demonstrate how designs can be kept sufficiently abstract to be platform independent and re-usable but still support design alternatives and their evaluation w.r.t. availability and principle system performance.
this paper describes the design and implementation of a solution to the constrained 2-D cutting stock problem on a cluster of workstations. the constrained 2-D cutting stock problem is an irregular problem with a dyna...
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ISBN:
(纸本)0818675829
this paper describes the design and implementation of a solution to the constrained 2-D cutting stock problem on a cluster of workstations. the constrained 2-D cutting stock problem is an irregular problem with a dynamically modified global data set and irregular amounts and patterns of communication. A replicated data structure is used for the parallel solution since the ratio of reads to writes is known to be large. Mutual exclusion and consistency are maintained using a token-based lazy consistency mechanism, and a randomized protocol for dynamically balancing the distributed work queue is employed. Speedups are reported for three benchmark problems executed on a cluster of workstations interconnected by a 10 Mbps Ethernet.
Using the parallel Substitution Algorithm, as a formal model of parallel computations, two examples of distributed architecture are given for implementation of fast parallel algorithms: for the maximal independent set...
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ISBN:
(纸本)3540663630
Using the parallel Substitution Algorithm, as a formal model of parallel computations, two examples of distributed architecture are given for implementation of fast parallel algorithms: for the maximal independent set problem and the minimum weighted vertex cover one.
the proceedings contain 5 papers. the topics discussed include: enabling rapid development of parallel tree search applications;challenges in executing large parameter sweep studies across widely distributedcomputing...
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ISBN:
(纸本)1595937145
the proceedings contain 5 papers. the topics discussed include: enabling rapid development of parallel tree search applications;challenges in executing large parameter sweep studies across widely distributedcomputing environments;hyperscaling of plasma turbulence simulations in DEISA;WISDOM-II: a large in silico docking effort for finding novel hits against malaria using computational grid infrastructure;and efficient processing of pathological images using the grid: computer-aided prognosis of neuroblastoma.
In this study, a control method is proposed to improve the harmonic suppression efficiency of the single phase active power filter in a distorted power system environment. Here, we present a method to use self-tuning ...
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ISBN:
(纸本)9781479951154
In this study, a control method is proposed to improve the harmonic suppression efficiency of the single phase active power filter in a distorted power system environment. Here, we present a method to use self-tuning filter (STF) algorithm for single phase active power filter. the proposed method process the grid voltage in order to provide a uniform reference grid current to increase efficiency of the system. the results of simulation study are presented to verify the effectiveness of the proposed control technique in this study.
In this paper, a parallel method for solving generalized eigenvalue problem based on multi-core platform is presented, which can provide parts of the eigenpairs in parallel. Compared with traditional numerical method,...
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ISBN:
(纸本)9780769548982;9781467345668
In this paper, a parallel method for solving generalized eigenvalue problem based on multi-core platform is presented, which can provide parts of the eigenpairs in parallel. Compared with traditional numerical method, the parallel method in this paper using numerical integration, numerical experiments are implemented with a quad-core computer under the programming environment of Matlab parallel toolbox. the problems of computingthe frequencies of a plane wing and aircraft pylon are taken as examples, which show the efficiency and applicability of our scheme.
In this paper a modified parallel Jacobi-conditioned conjugate gradient (CG) method is proposed for solving linear elastic finite element system of equations. the conventional element-by-element and diagonally conditi...
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In this paper a modified parallel Jacobi-conditioned conjugate gradient (CG) method is proposed for solving linear elastic finite element system of equations. the conventional element-by-element and diagonally conditioned approaches are discussed with respect to parallel implementation on distributed memory MIMD architectures. the effects of communication overheads on the efficiency of the parallel CG solver are considered and it is shown that for the efficient performance of a parallel CG solver, the interprocessor communication has to be carried out concurrently. A concurrent communication scheme is proposed by relating the semi-bandwidth of the stiffness matrix withthe number of independent degrees of freedom and the number of processors and inducing directionalization of communication within the processor pipeline. Withthe aid of two examples the effectiveness of the proposed method is demonstrated showing that the cost of communication remains low and relatively insensitive to the increase in the number of processors. Copyright (C) 1996 Civil-Comp Limited and Elsevier Science Limited.
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