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检索条件"任意字段=Proceedings of the Advances in Parallel and Distributed Computing"

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Pareto Front Based Realistic Soft Real-Time Task Scheduling with Multi-objective Genetic Algorithm in Unstructured Heterogeneous distributed System

Pareto Front Based Realistic Soft Real-Time Task Scheduling ...

引用

5th International Conference on Grid and Pervasive computing

作者： Sedaghat, Nafiseh Tabatabaee-Yazdi, Hamid Akbarzadeh-T, Mohammad-R Islamic Azad Univ Dept Comp Engn Qouchan Branch Tehran Iran Islamic Azad Univ Mashhad Branch Dept Artificial Intelligence Tehran Iran Ferdowsi Univ Mashhad Dept Elect Engn Mashhad Iran

ISBN: (纸本)9783642130663

Task scheduling is an essential aspect of parallel processing system. This problem assumes fully connected processors and ignores contention on the communication links. However, as arbitrary processor network (APN), communication contention has a strong influence on the execution time of a parallel application. In this paper, we propose multi-objective genetic algorithm to solve task scheduling problem with time constraints in unstructured heterogeneous processors to find the scheduling with minimum makespan and total tardiness. To optimize objectives, we use Pareto front based technique, vector based method. In this problem, just like tasks, we schedule messages on suitable links during the minimization of the makespan and total tardiness. To find a path for transferring a message between processors we use classic routing algorithm. We compare our method with BSA method that is a well known algorithm. Experimental results show our method is better than BSA and yield better makespan and total tardiness.

关键词： DAG distributed system Edge scheduling Genetic algorithm Heterogeneous system Link contention Multi-objective Optimization Precedence constraint Real time system Routing Soft real time Task scheduling

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Performance of a multi-frontal parallel direct solver for hp-finite element method

Performance of a multi-frontal parallel direct solver for hp...

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IASTED International Conference on advances in Computer Science and Engineering, ACSE 2009

作者： Paszyński, Maciej Pardo, David Torres-Verdín, Carlos Department of Computer Science AGH University of Science and Technology Kraków Poland Basque Center for Applied Mathematics Bilbao Spain Department of Petroleum and Geosystems Engineering University of Texas Austin TX United States

ISBN: (纸本)9780889867901

In this paper we present the performance of our parallel multi-frontal direct solver when applied to solve linear systems of equations resulting from discretizations of a hp Finite Element Method (hp-FEM). The hp-FEM generates a sequence of computational meshes delivering exponential convergence of the numerical error with respect to the mesh size (number of degrees of freedom). A sequence of meshes is obtained by performing several hp refinements starting from an arbitrary initial mesh. The solver constructs initial elimination tree for an arbitrary initial mesh, and expands the elimination tree each time the mesh is refined. The solver has been tested on 3D Direct Current (DC) borehole resistivity measurement simulations problems. We compare the solver with two versions of the MUMPS parallel solver: with (1) distributed entries executed over the entire problem, and (2) the direct sub-structuring method with parallel MUMPS solver utilized to solve the interface problem. We show that by providing to the solver the knowledge about the structure of the hp-FEM, the order of elimination is obtained straightforward, and leads to a better performance than by submitting the entire matrix to the solver and executing a connectivity graph based ordering algorithm.

关键词： Finite element method

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PVM communication performance in a switched FDDI heterogeneous distributed computing environment

PVM communication performance in a switched FDDI heterogeneo...

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proceedings of the IEEE Workshop on advances in parallel and distributed Systems

作者： M.J. Lewis R.E. Cline Distributed Computing Department Sandia National Laboratories Livermore CA USA

The parallel Virtual Machine (PVM) message passing system developed at Oak Ridge National Laboratories has gained widespread acceptance and usage in the parallel programming community. The authors describe the results of performance tests of PVM in a switched FDDI heterogeneous distributed computing environment. They aim to provide insight into how parallel programs, particularly those employing PVM for intertask communication, will perform in distributed systems of the future.

关键词： Communication switching FDDI distributed computing Testing Workstations Application software Libraries Sockets Virtual machining Message passing

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A case study: Incorporating parallel and distributed computing into computer science curriculum 11

A case study: Incorporating parallel and distributed computi...

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11th International Multi-Conference on Complexity, Informatics and Cybernetics, IMCIC 2020

作者： Abu-El Humos, A. Hong, S. Pei, T. Aljawfi, O. Department of Electrical & Computer Engineering and Computer Science Jackson State University JacksonMS39217 United States

ISBN: (纸本)9781950492251

Recent technology advances in parallel computing such as multicore CPUs, GPUs, and their driving software require a well-prepared workforce to support this demanding and fast changing industry. parallel and distributed computing (PDC) education for computer science and computer engineering majors will play a major role in preparing well trained graduates to join this workforce. In this work, we share past and future plans to update the computer science curriculum at Jackson State University (JSU) with PDC modules. As part of this effort, some of the NSF/IEEE-TCPP curriculum initiative on PDC modules were integrated into department-wide core and elective courses offered in both fall and spring semesters. These courses were: CSC 119 Object Oriented Programming (core) [2, 4, 6, 9], CSC 216 Computer Architecture and Organization (core) [3, 5, 9], CSC 312 Advanced Computer Architecture (core) [3,5], CSC 325 Operating Systems (core) [6, 9], CSC 350 Organization of Programming Languages (core) [9], CSC 425 parallel computing (elective) [1, 2, 6], CSC 499 Special Topics: Data Mining (elective) and UNIV 100 University Success course, which is a university-wide class offered for all JSU majors. In an effort to update the contents of the UNIV 100 course, some contemporary PDC topics and their essence in higher education were incorporated into this course. The inclusion of the PDC modules was gradual and light weighted in the lower level courses and more aggressive in the higher-level courses to let the students easily grasp PDC concepts. Specific test questions, homework assignments and projects were developed to assess students' performance. All rights reserved. Copyright 2020. © by the International Institute of Informatics and Systemics.

关键词： Object oriented programming

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distributed computation of persistent homology 16

Distributed computation of persistent homology

引用

16th Workshop on Algorithm Engineering and Experiments, ALENEX 2014

作者： Bauer, Ulrich Kerber, Michael Reininghaus, Jan Institute of Science and Technology Austria Klosterneuburg Austria Max Planck Institute for Computer Science Saarbrücken Germany

ISBN: (纸本)9781611973198

Persistent homology is a popular and powerful tool for capturing topological features of data. advances in algorithms for computing persistent homology have reduced the computation time drastically - as long as the algorithm does not exhaust the available memory. Following up on a recently presented parallel method for persistence computation on shared memory systems [1], we demonstrate that a simple adaption of the standard reduction algorithm leads to a variant for distributed systems. Our algorithmic design ensures that the data is distributed over the nodes without redundancy;this permits the computation of much larger instances than on a single machine. Moreover, we observe that the parallelism at least compensates for the overhead caused by communication between nodes, and often even speeds up the computation compared to sequential and even parallel shared memory algorithms. In our experiments, we were able to compute the persistent homology of filtrations with more than a billion (109) elements within seconds on a cluster with 32 nodes using less than 6GB of memory per node. Copyright © 2014. by the Society for Industrial and Applied Mathematics.

关键词： Memory architecture

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Research advances in Automated Red Teaming 10

Research advances in Automated Red Teaming

引用

proceedings of the 2010 Spring Simulation Multiconference

作者： Decraene, James Zeng, Fanchao Low, Malcolm Yoke Hean Zhou, Suiping Cai, Wentong Parallel and Distributed Computing Center School of Computer Engineering Nanyang Technological University Singapore 639798 Singapore

ISBN: (纸本)9781450300698

We present, combine and apply novel research advances to Automated Red Teaming (ART). ART is an automated vulnerability assessment tool which is employed to uncover the hard-to-predict and potentially critical elements of military operations. ART is principally based on the use of agent-based modelling/simulation, data farming and evolutionary computation. In this paper, we present two distinct computational methods to address multiple issues of ART: constraint handling and computing budget. These novel techniques originate from the research fields of evolutionary computation and cloud computing. These techniques are applied to a military toy model which was developed with the agent-based simulation platform MANA. We then discuss another potential bottleneck of ART: many-objective optimization. The aim of this research is to optimize ART to best assist defense experts in operational analysis and, ultimately, in critical decision making. © 2010 SCS.

关键词： Decision making

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distributed, parallel and Biologically Inspired Systems 1

引用

丛书名： IFIP advances in Information and Communication Technology

1000年

作者： Mike Hinchey Bernd Kleinjohann Lisa Kleinjohann Peter A. Lindsay Franz J. Rammig Jon Timmis Marilyn Wolf

ISBN: (数字)9783642152344

ISBN: (纸本)9783642152337;9783642422928

st This volume contains the proceedings of two conferences held as part of the 21 IFIP World Computer Congress in Brisbane, Australia, 20–23 September 2010. th The first part of the book presents the proceedings of DIPES 2010, the 7 IFIP Conference on distributed and parallel Embedded Systems. The conference, int- duced in a separate preface by the Chairs, covers a range of topics from specification and design of embedded systems through to dependability and fault tolerance. rd The second part of the book contains the proceedings of BICC 2010, the 3 IFIP Conference on Biologically-Inspired Collaborative computing. The conference is concerned with emerging techniques from research areas such as organic computing, autonomic computing and self-adaptive systems, where inspiraton for techniques - rives from exhibited behaviour in nature and biology. Such techniques require the use of research developed by the DIPES community in supporting collaboration over multiple systems. We hope that the combination of the two proceedings will add value for the reader and advance our related work.

关键词： Software Engineering/Programming and Operating Systems Computer Communication Networks Programming Techniques Software Engineering Artificial Intelligence Information Systems Applications (incl. Internet)

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An environment for the parallel execution of multigrain clustered tasks

An environment for the parallel execution of multigrain clus...

引用

proceedings of the advances in parallel and distributed computing

作者： J.-N. Colin Computer Science Department Faculté Polytechnique de Mons Mons Belgium

In this paper, we present an original approach for the design and execution of distributed applications that require numerous tasks of variable grain. The approach is based on the concept of task cluster which is an entity that groups tasks with strong logical interaction and that guarantees efficient communications between them. We describe the implementation of the model, that mainly relies on the use of lightweight processes as support for the distributed tasks. We also illustrate the use of the proposed approach on real size applications where it has improved both the ease of design and the performance.

关键词： Application software Workstations Programming profession Libraries Computational modeling Computer science Operating systems Computer networks Concurrent computing distributed computing

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Numerical Laplace transform solution method on a distributed memory architecture

Numerical Laplace transform solution method on a distributed...

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proceedings of the 1997 5th International Conference on the Application of High-Performance Computers in Engineering, HPC

作者： Davies, A.J. Mushtaq, J. Radford, L.E. Crann, D. Univ of Hertfordshire Hatfield United Kingdom

The Laplace transform in time has been shown to provide an excellent alternative to the finite difference method for the solution of parabolic problems associated with partial differential equations. An implementation of the Laplace transform method in a parallel environment can provide a concurrent solution process with no communication overhead. The Laplace transform in time, when applied to the diffusion problem, results in a modified Helmholtz equation in the transform space. The diffusion problem is solved in a parallel environment in which the elliptic problem in transform space is solved using finite differences, finite elements, boundary elements, the method of fundamental solutions and Kansa's multiquadric method.

关键词： Laplace transforms

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Heterogeneous parallel computing across multidomain clusters

引用

11th European parallel Virtural Machine and Message Passing Interface Users Group Meeting

作者： Hwang, P Kurzyniec, D Sunderam, V Emory Univ Atlanta GA 30322 USA

ISBN: (纸本)3540231633

We propose lightweight middleware solutions that facilitate and simplify the execution of MPI programs across multidomain clusters. The system described in this paper leverages H2O, a distributed meta-computing framework, to route MPI message passing across heterogeneous aggregates located in different administrative or network domains. MPI programs instantiate a specially written H2O pluglet;messages that are destined for remote sites are intercepted and transparently forwarded to their final destinations. The software was written and tested in a simulated environment, with a focus on clusters behind firewalls. Qualitatively it was demonstrated that the proposed technique is indeed effective in enabling communication across firewalls by MPI programs. In addition, tests showed only a small drop in performance, acceptable considering the substantial added functionality of sharing new resources across different administrative domains.

关键词： Message passing

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