Bibliografie tematiche / Parallel computers Evaluation

Indice

Articoli di riviste
Tesi
Libri
Capitoli di libri
Atti di convegni
Rapporti di organizzazioni

Letteratura scientifica selezionata sul tema "Parallel computers Evaluation"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 11 febbraio 2022

Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili

Scegli il tipo di fonte:

Consulta la lista di attuali articoli, libri, tesi, atti di convegni e altre fonti scientifiche attinenti al tema "Parallel computers Evaluation".

Accanto a ogni fonte nell'elenco di riferimenti c'è un pulsante "Aggiungi alla bibliografia". Premilo e genereremo automaticamente la citazione bibliografica dell'opera scelta nello stile citazionale di cui hai bisogno: APA, MLA, Harvard, Chicago, Vancouver ecc.

Puoi anche scaricare il testo completo della pubblicazione scientifica nel formato .pdf e leggere online l'abstract (il sommario) dell'opera se è presente nei metadati.

Articoli di riviste sul tema "Parallel computers Evaluation"

Choudhary, A., Wei-Keng Liao, D. Weiner, P. Varshney, R. Linderman, M. Linderman e R. Brown. "Design, implementation and evaluation of parallel pipelined STAP on parallel computers". IEEE Transactions on Aerospace and Electronic Systems 36, n. 2 (aprile 2000): 528–48. http://dx.doi.org/10.1109/7.845238.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Moorthi, M. Narayana, e R. Manjula. "Performance Evaluation and Analysis of Parallel Computers Workload". International Journal of Grid and Distributed Computing 9, n. 1 (31 gennaio 2016): 127–34. http://dx.doi.org/10.14257/ijgdc.2016.9.1.13.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

TOUYAMA, TAKAYOSHI, e SUSUMU HORIGUCHI. "PERFORMANCE EVALUATION OF PRACTICAL PARALLEL COMPUTER MODEL LogPQ". International Journal of Foundations of Computer Science 12, n. 03 (giugno 2001): 325–40. http://dx.doi.org/10.1142/s0129054101000515.

Testo completo

Abstract (sommario):

The present super computer will be replaced by a massively parallel computer consisting of a large number of processing elements which satisfy the continuous increasing depend for computing power. Practical parallel computing model has been expected to develop efficient parallel algorithms on massively parallel computers. Thus, we have presented a practical parallel computation model LogPQ by taking account of communication queues into the LogP model. This paper addresses the performance of a parallel matrix multiplication algorithm using LogPQ and LogP models. The parallel algorithm is implemented on Cray T3E and the parallel performances are compared with on the old machine CM-5. This shows that the communication network of T3E has superior buffering behavior than CM-5, in which we don't need to prepare extra buffering on T3E. Although, a little effect remains for both of the send and receive bufferings. On the other hand, the effect of message size remains, which shows the necessity of the overhead and gap proportional to the message size.

Gli stili APA, Harvard, Vancouver, ISO e altri

KRUSCHE, PETER. "EXPERIMENTAL EVALUATION OF BSP PROGRAMMING LIBRARIES". Parallel Processing Letters 18, n. 01 (marzo 2008): 7–21. http://dx.doi.org/10.1142/s0129626408003193.

Testo completo

Abstract (sommario):

The model of bulk-synchronous parallel computation (BSP) helps to implement portable general purpose algorithms while maintaining predictable performance on different parallel computers. Nevertheless, when programming in ‘BSP style’, the running time of the implementation of an algorithm can be very dependent on the underlying communication library. In this study, an overview of existing approaches to practical BSP programming in C/C++ or Fortran is given and benchmarks were run for the two main BSP-like communication libraries, the Oxford BSP Toolset and PUB. Furthermore, a memory efficient matrix multiplication algorithm was implemented and used to compare their performance on different parallel computers and to evaluate the compliance with predictions by theoretical results.

Gli stili APA, Harvard, Vancouver, ISO e altri

Onbasioglu, E., e Y. Paker. "A comparative workload-based methodology for performance evaluation of parallel computers". Future Generation Computer Systems 12, n. 6 (giugno 1997): 521–45. http://dx.doi.org/10.1016/s0167-739x(97)83070-1.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Furht, B. "A contribution to classification and evaluation of structures for parallel computers". Microprocessing and Microprogramming 25, n. 1-5 (gennaio 1989): 203–8. http://dx.doi.org/10.1016/0165-6074(89)90196-8.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

BLÖTE, H. W. J. "Statistical Mechanics and Special-Purpose Computers". International Journal of Modern Physics C 02, n. 01 (marzo 1991): 14–20. http://dx.doi.org/10.1142/s0129183191000032.

Testo completo

Abstract (sommario):

A number of special-purpose computers (SPC’s) have been built in the last two decades, and more are under construction. In parallel with the evolution of generalpurpose computers, the capacity of the fastest SPC’s has grown considerably in this period. The increase of speed is partly due to the availability of faster components, but even more important is the introduction of new architectures using pipelining and parallel processing. Apart from becoming faster on the average, a pronounced diversification has taken place in SPC’s which does not only affect their speed but also their versatility and, of course, their cost. An evaluation of SPC performances and costs in comparison with general-purpose supercomputers shows that, under certain circumstances, SPC’s can play a very useful role. They enable calculations that would not be feasible otherwise, because of excessive costs. However, the effort needed to build even a relatively simple SPC can easily be underestimated.

Gli stili APA, Harvard, Vancouver, ISO e altri

Sueyoshi, Toshinori, Keizo Saisho e Itsujiro Arita. "Performance evaluation of the binary tree access mechanism in mimd type parallel computers". Systems and Computers in Japan 17, n. 9 (1986): 47–57. http://dx.doi.org/10.1002/scj.4690170906.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Nguyen Thu, Thuy. "Parallel iteration of two-step Runge-Kutta methods". Journal of Science Natural Science 66, n. 1 (marzo 2021): 12–24. http://dx.doi.org/10.18173/2354-1059.2021-0002.

Testo completo

Abstract (sommario):

In this paper, we introduce the Parallel iteration of two-step Runge-Kutta methods for solving non-stiff initial-value problems for systems of first-order differential equations (ODEs): y′(t) = f(t, y(t)), for use on parallel computers. Starting with an s−stage implicit two-step Runge-Kutta (TSRK) method of order p, we apply the highly parallel predictor-corrector iteration process in P (EC)mE mode. In this way, we obtain an explicit two-step Runge-Kutta method that has order p for all m, and that requires s(m+1) right-hand side evaluations per step of which each s evaluation can be computed parallelly. By a number of numerical experiments, we show the superiority of the parallel predictor-corrector methods proposed in this paper over both sequential and parallel methods available in the literature.

Gli stili APA, Harvard, Vancouver, ISO e altri

Gupta, Anshul, Fred G. Gustavson, Mahesh Joshi e Sivan Toledo. "The design, implementation, and evaluation of a symmetric banded linear solver for distributed-memory parallel computers". ACM Transactions on Mathematical Software 24, n. 1 (marzo 1998): 74–101. http://dx.doi.org/10.1145/285861.285865.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Più fonti

Tesi sul tema "Parallel computers Evaluation"

Grove, Duncan A. "Performance modelling of message-passing parallel programs". Title page, contents and abstract only, 2003. http://web4.library.adelaide.edu.au/theses/09PH/09phg8832.pdf.

Testo completo

Abstract (sommario):

This dissertation describes a new performance modelling system, called the Performance Evaluating Virtual Parallel Machine (PEVPM). It uses a novel bottom-up approach, where submodels of individual computation and communication events are dynamically constructed from data-dependencies, current contention levels and the performance distributions of low-level operations, which define performance variability in the face of contention.

Gli stili APA, Harvard, Vancouver, ISO e altri

Ligon, Walter Batchelor III. "An empirical evaluation of architectural reconfigurability". Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/8204.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Maache, Ahmed. "A prototype parallel multi-FPGA accelerator for SPICE CMOS model evaluation". Thesis, University of Southampton, 2011. https://eprints.soton.ac.uk/173435/.

Testo completo

Abstract (sommario):

Due to ever increasing complexity of circuits, EDA tools and algorithms are demanding more computational power. This made transistor-level simulation a growing bottleneck in the circuit development process. This thesis serves as a proof of concept to evaluate and quantify the cost of using multi-FPGA systems in SPICE-like simulations in terms of acceleration, throughput, area, and power. To this end, a multi-FPGA architecture is designed to exploit the inherent parallelism in the device model evaluation phase within the SPICE simulator. A code transformation flow which converts the high-level device model code to structural VHDL was also implemented. This ow showed that an automatic compiler system to design, map, and optimise SPICE-like simulations on FPGAs is feasible. This thesis has two main contributions. The first contribution is the multi-FPGA accelerator of the device model evaluation which demonstrated speedup of 10 times over a conventional processor, while consuming six times less power. Results also showed that it is feasible to describe and optimise FPGA pipelined implementations to exploit other class of applications similar to the SPICE device model evaluation. The constant throughput of the pipelined architecture is one of the main factors for the FPGA accelerator to outperform conventional processors. The second contribution lies in the use of multi-FPGA synthesis to optimise the inter-FPGA connections through altering the process of mapping partitions to FPGA devices. A novel technique is introduced which reduces the inter-FPGA connections by an average of 18%. The speedup and power effciency results showed that the proposed multi-FPGA system can be used by the SPICE community to accelerate the transistor-level simulation. The experimental results also showed that it is worthwhile continuing this research further to explore the use of FPGAs to accelerate other EDA tools

Gli stili APA, Harvard, Vancouver, ISO e altri

Dhandapani, Mangayarkarasi. "Performance evaluation of high performance parallel I/O". Master's thesis, Mississippi State : Mississippi State University, 2003. http://sun.library.msstate.edu/ETD-db/theses/available/etd-07072003-155031/unrestricted/mythesis.pdf.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Larriba, Pey Josep Lluís. "Design and evaluation of tridiagonal solvers for vector and parallel computers". Doctoral thesis, Universitat Politècnica de Catalunya, 1995. http://hdl.handle.net/10803/6012.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Jiang, Jie Cheng. "Performance monitoring in transputer-based multicomputer networks". Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/28968.

Testo completo

Abstract (sommario):

Parallel architectures, like the transputer-based multicomputer network, offer potentially enormous computational power at modest cost. However, writing programs on a multicomputer to exploit parallelism is very difficult due to the lack of tools to help users understand the run-time behavior of the parallel system and detect performance bottlenecks in their programs. This thesis examines the performance characteristics of parallel programs in a multicomputer network, and describes the design and implementation of a real-time performance monitoring tool on transputers. We started with a simple graph theoretical model in which a parallel computation is represented as a weighted directed acyclic graph, called the execution graph. This model allows us to easily derive a variety of performance metrics for parallel programs, such as program execution time, speedup, efficiency, etc. From this model, we also developed a new analysis method called weighted critical path analysts (WCPA), which incorporates the notion of parallelism into critical path analysis and helps users identify the program activities which have the most impact on performance. Based on these ideas, the design of a real-time performance monitoring tool was proposed and implemented on a 74-node transputer-based multicomputer. Major problems in parallel and distributed monitoring addressed in this thesis are: global state and global clock, minimization of monitoring overhead, and the presentation of meaningful data. New techniques and novel approaches to these problems have been investigated and implemented in our tool. Lastly, benchmarks are used to measure the accuracy and the overhead of our monitoring tool. We also demonstrate how this tool was used to improve the performance of an actual parallel application by more than 50%.
Science, Faculty of
Computer Science, Department of
Graduate

Gli stili APA, Harvard, Vancouver, ISO e altri

Afsahi, Ahmad. "Design and evaluation of communication latency hiding/reduction techniques for message-passing environments". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0019/NQ48225.pdf.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Li, Xiaogang. "Efficient and parallel evaluation of XQuery". Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1139939037.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Fu, Jingsong. "ParPlum : a system for evaluating parallel program optimization methods". PDXScholar, 1991. https://pdxscholar.library.pdx.edu/open_access_etds/4177.

Testo completo

Abstract (sommario):

The diversity of application programs and parallel architectures makes the mapping problem complicated and hard to evaluate. The quality of mapping is machine and application dependent and varies due to inaccurate values of application and architecture characteristics. A system for developing, applying and evaluating mappings must have four characteristics: (1) Simplicity: A mapping procedure can be evaluated by separately evaluating its submapping, so the complicated problem can be simplified. (2) Generality: A wide range of application programs and architectures can be easily represented and all mapping algorithms can be easily implemented. (3) Multifunctionality: all the mapping steps, application programs, target architectures, and related cost functions can vary and are easy to evaluate. (4) Ability for the sensitivity analysis: The sensitivity of mapping quality to the inaccuracy of cost functions and characteristics of applications and architectures can be easily tested. ParPlum, which is presented in this thesis, is aimed at creating and evaluating mappings on different parallel architectures with different application programs. Sensitivity analysis is another major focus. The design philosophy of ParPlum is to narrow down the multidimensional optimization problem into sub-problems with one or fewer dimensions. Mapping, for example, can be divided into three submappings, partitioning, allocating, and scheduling. This leads to the implementation of the ParPlum system, the use of data flow style, the distribution of ParPlum libraries, and the development of the ParPlum pipeline.

Gli stili APA, Harvard, Vancouver, ISO e altri

Tang, Dezheng. "Mapping Programs to Parallel Architectures in the Real World". PDXScholar, 1992. https://pdxscholar.library.pdx.edu/open_access_etds/4534.

Testo completo

Abstract (sommario):

Mapping an application program to a parallel architecture can be described as a multidimensional optimization problem. To simplify the problem, we divide the overall mapping process into three sequential substeps: partitioning, allocating, and scheduling, with each step using a few details of the program and architecture description. Due to the difficulty in accurately describing the program and architecture and the fact that each substep uses incomplete information, inaccuracy is pervasive in the real-world mapping process. We hypothesize that the inaccuracy and the use of suboptimal, heuristic mapping methods may greatly affect the mapping or submapping performance and lead to a non-optimal solution. We do not discard the typical approach used by most researchers in which total execution time or speedup is the criterion to evaluate the quality of the mapping. However, we improve on this approach by including the effects of inaccuracy. We believe that, due to the presence of inaccuracy in the mapping process, investigating the impact of inaccuracy on the mapping quality is crucial to achieving good mappings. The motivation of this work is to identify the various inaccuracies during the mapping procedure and explore the sensitivity of mapping quality to the inaccurate parameters. To conduct the sensitivity examination, the Global Cluster partitioning algorithm and some models were used. The models use some program and architecture characteristics, or lower-level meters, to characterize the mapping solution space. The algorithm searches the solution space and makes the decision based on the information provided by the models. The experiments were implemented on a UNIX LAN of Sun workstations for different data flow graphs. The graphs use three parallel programming paradigms: fine grained, coarse-grained, and pipelined styles, to represent some high-level application programs: vector inner product calculation, matrix multiplication, and Gaussian elimination respectively. The experimental results show that varying system behavior affects the accuracy of lower-level meters, and the quality of the mapping algorithm is very sensitive to the inaccuracies.

Gli stili APA, Harvard, Vancouver, ISO e altri

Più fonti

Libri sul tema "Parallel computers Evaluation"

Performance evaluation, prediction and visualization of parallel systems. Boston: Kluwer Academic Publishers, 1999.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Lyon, Gordon. On parallel processing benchmarks. Gaithersburg, MD: U.S. Dept. of Commerce, National Bureau of Standards, 1987.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Walch, Markus. Evaluating parallel processing of communication protocols. München: R. Oldenbourg, 1994.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Dimpsey, Robert Tod. Performance evaluation and modeling techniques for parallel processors. Urbana, Ill: Center for Reliable and High-Performance Computing, Coordinated Science Laboratory, College of Engineering, University of Illinois at Urbana-Champaign, 1992.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Peter, Thanisch, Bloor Robin e Jowitt Tom, a cura di. Parallel database technology: An evaluation and comparison of scalable sytems. Milton Keynes: Bloor Research Group, 1995.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Paul, Miller Barton, a cura di. Monitoring systems and tool interoperability. New York: Nova Science, 2004.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Jones, James Patton. Evaluation of job queuing/scheduling software: Phase l report. [Washington, D.C: National Aeronautics and Space Administration, 1996.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

1945-, Gelenbe E., a cura di. High performance computer systems: Proceedings of the International Symposium on High Performance Computer Systems, Paris, France, 14-16 December 1987. Amsterdam: North-Holland, 1988.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Ferscha, Alois. Modellierung und Leistungsanalyse paralleler Systeme mit dem PRM-Netz-Modell. Wien: Oldenbourg, 1995.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Lindemann, Christoph. Performance modelling with deterministic and stochastic Petri nets. Chichester: Wiley, 1998.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Più fonti

Capitoli di libri sul tema "Parallel computers Evaluation"

Genz, Alan. "The Numerical Evaluation of Multiple Integrals on Parallel Computers". In Numerical Integration, 219–29. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3889-2_23.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Hagiya, Masami, Masanori Arita, Daisuke Kiga, Kensaku Sakamoto e Shigeyuki Yokoyama. "Towards parallel evaluation and learning of Boolean 𝜇-formulas with molecules". In DNA Based Computers III, 57–72. Providence, Rhode Island: American Mathematical Society, 1999. http://dx.doi.org/10.1090/dimacs/048/05.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Shang, Haifeng, Jiaqi Zhang, Wenguang Chen, Weimin Zheng e Zhiyi Huang. "Performance Evaluation of View-Oriented Parallel Programming on Cluster of Computers". In High Performance Computing and Communications, 120–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-75444-2_17.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Gupta, Anshul, Fred G. Gustavson, Mahesh Joshi e Sivan Toledo. "The design, implementation, and evaluation of a banded linear solver for distributed-memory parallel computers". In Applied Parallel Computing Industrial Computation and Optimization, 328–40. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3-540-62095-8_35.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Bergamaschi, Flavio A., Carlos Hulot e Ed Zaluska. "Performance evaluation of an advanced radar tracking filter on commercially available parallel computers". In High-Performance Computing and Networking, 915–16. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3-540-61142-8_647.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Liao, Wei-keng, Alok Choudhary, Donald Weiner e Pramod Varshney. "I/O Implementation and Evaluation of Parallel Pipelined STAP on High Performance Computers". In Lecture Notes in Computer Science, 354–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-540-46642-0_51.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Hartleb, Franz. "Graph Models for Performance Evaluation of Parallel Programs". In Parallel Computer Architectures, 80–86. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-662-21577-7_6.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Hockney, Roger W. "Classification and evaluation of parallel computer systems". In Parallel Computing in Science and Engineering, 13–25. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/3-540-18923-8_12.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Cui, J., J. L. Bordim, K. Nakano, T. Hayashi e N. Ishii. "Multithreaded Parallel Computer Model with Performance Evaluation". In Lecture Notes in Computer Science, 155–60. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-45591-4_20.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Luque, E., R. Suppi e J. Sorribes. "PSEE: Parallel system evaluation environment". In Lecture Notes in Computer Science, 696–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/3-540-56891-3_62.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Atti di convegni sul tema "Parallel computers Evaluation"

Shahnaz, Rukhsana, Anila Usman e Imran Chughtai. "Implementation and Evaluation of Parallel Sparse Matrix-Vector Products on Distributed Memory Parallel Computers". In 2006 IEEE International Conference on Cluster Computing. IEEE, 2006. http://dx.doi.org/10.1109/clustr.2006.311878.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Abbas, Muhammad, Oscar Gustafsson e Anton Blad. "Low-complexity parallel evaluation of powers exploiting bit-level redundancy". In 2010 44th Asilomar Conference on Signals, Systems and Computers. IEEE, 2010. http://dx.doi.org/10.1109/acssc.2010.5757714.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Bohm, W., W. Najjar, B. Shankar e L. Roh. "An evaluation of coarse grain dataflow code generation strategies". In Proceedings of Workshop on Programming Models for Massively Parallel Computers. IEEE Comput. Soc. Press, 1993. http://dx.doi.org/10.1109/pmmp.1993.315554.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Lopez, David, Claudia Zepeda e Jose Luis Carballido. "Evaluation of a parallel approach implementation of the p-stable semantics". In 2012 22nd International Conference on Electrical Communications and Computers (CONIELECOMP). IEEE, 2012. http://dx.doi.org/10.1109/conielecomp.2012.6189875.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Nik Zulkipli, Nurul Huda, e Norazlan Idris. "An empirical study on performance evaluation of parallel architecture for web application services". In 2013 IEEE Symposium on Computers & Informatics (ISCI). IEEE, 2013. http://dx.doi.org/10.1109/isci.2013.6612406.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Schönherr, Jürgen. "Evaluation and Optimum Design of Parallel Manipulators Having Defined Workspace". In ASME 2000 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/detc2000/mech-14092.

Testo completo

Abstract (sommario):

Abstract The condition of the Jacobian characterizes the transmission quality of manipulators and is used in this paper for the determination of the dimensions of manipulators having best mobility for a defined workspace. Typical planar and spatial manipulators of parallel structure and having 3 or 6 degrees of freedom are used to demonstrate the method of design used. Manipulators having identical degrees of freedom and workspaces and different structures, including those having fixed or variable leg lengths, are compared with respect to their mobility. The computing program developed for the purpose of optimum design performs the kinematic optimization of machines and manipulators of any structure.

Gli stili APA, Harvard, Vancouver, ISO e altri

Li, Liming, e Jing Zhao. "Comprehensive Evaluation of Parallel Mechanism and Robot Performance Based on Principal Component Analysis and Kernel Principal Component Analysis". In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-47032.

Testo completo

Abstract (sommario):

Revealing the relations among parallel mechanism and robot comprehensive performance, topological structure and dimension is the basis to optimize mechanism. Due to the correlation and diversity of the single performance indexes, statistical principles of linear dimension reduction and nonlinear dimension reduction were introduced into comprehensive performance analysis and evaluation for typical parallel mechanisms and robots. Then the mechanism’s topological structure and dimension with the best comprehensive performance could be selected based on principal component analysis (PCA) and kernel principal component analysis (KPCA) respectively. Through comparing the results, KPCA could reveal the nonlinear relationship among different single performance indexes to provide more comprehensive performance evaluation information than PCA, and indicate the numerical calculation relations among comprehensive performance, topological structure and dimension validly.

Gli stili APA, Harvard, Vancouver, ISO e altri

Mei, Bin, Fugui Xie, Xin-Jun Liu e Xuan Luo. "Motion/Force Transmissibility Based Performance Evaluation of a 6-DOF Parallel Robot With 2-DOF Active Joints". In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85666.

Testo completo

Abstract (sommario):

3-PP(Pa)S robot is a six degrees of freedom (DOFs) parallel mechanism with 2-DOF active planar joint. For the design and application of the 3-PP(Pa)S robot, it is essential to investigate the motion/force transmissibility of the robot. But previous studies of the motion/force transmissibility have mainly focused on the parallel robots with 1-DOF active joints and thus cannot be directly applied to the 3-PP(Pa)S robot. In this paper, input twist subspace, transmission wrench subspace and output twist subspace are investigated to build mathematical models of the twists and wrenches corresponding to the 2-DOF active planar joint. Afterwards, based on the previous established frame of the local transmission index, some extended performance evaluation indices are defined to describe the motion/force transmissibility of the 3-PP(Pa)S robot. On this basis, the singularity and motion/force transmissibility of this mechanism are investigated. The motion/force transmissibility evaluation method is meaningful and applicable for the 3-PP(Pa)S parallel robot with 2-DOF active joints and can be further applied to other mechanisms with multi-DOF active joints.

Gli stili APA, Harvard, Vancouver, ISO e altri

Devendorf, Erich, e Kemper Lewis. "Incorporating Process Architecture in the Evaluation of Stability in Distributed Design". In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-48375.

Testo completo

Abstract (sommario):

In distributed design processes, individual design subsystems have local control over design variables and seek to satisfy their own individual objectives, which may also be influenced by some system level objectives. The resulting network of coupled subsystems will either converge to a stable equilibrium, or diverge in an unstable manner. In this paper, we study the dependence of system stability on the solution process architecture. The solution process architecture describes how the design subsystems are ordered and can be either sequential, parallel, or a hybrid that incorporates both parallel and sequential elements. In this paper we demonstrate that the stability of a distributed design system does indeed depend on the solution process architecture chosen and we create a general process architecture model based on linear systems theory. The model allows the stability of equilibrium solutions to be analyzed for distributed design systems by converting any process architecture into an equivalent parallel representation. Moreover, we show that this approach can accurately predict when the equilibrium is unstable and the system divergent when previous models suggest the system is convergent.

Gli stili APA, Harvard, Vancouver, ISO e altri

Zhang, Dan, e Zhen Gao. "Conceptual Design, Performance Evaluation and Dimensional Optimization of a Compact Acceleration Sensor Based on Flexure Parallel Mechanisms". In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-48089.

Testo completo

Abstract (sommario):

In this paper, a tridimensional acceleration sensor based on flexure parallel mechanism (FPM) is presented. Three perpendicular compliant legs with compact monolithic structure are served as the elastic body for sensing the inertial signals in each direction. With integrated flexure hinges, each chain containing multiple revolute joints and cantilever beams are designed to carry compressive and tensile loads. Firstly, the structure evolution and kinematics modeling are introduced, followed by the multi-spring modeling of the directional compliance for the flexure leg. Then, the comprehensive finite-element analysis (FEA) including the strain of the sensitive legs, modal analysis for total deformation under different frequency is conducted. The compliances calculated by FEA and multi-spring model are compared. Finally, the dimensional optimization is implemented based on multi-population genetic algorithm to obtain the optimal flexure parameters. The proposed methods and algorithms are also useful for the analysis and development of other flexure parallel mechanisms.

Gli stili APA, Harvard, Vancouver, ISO e altri

Rapporti di organizzazioni sul tema "Parallel computers Evaluation"

Salazar, Sandra B., e Carl H. Smith. National Bureau of Standards Workshop on Performance Evaluation of Parallel Computers. Gaithersburg, MD: National Bureau of Standards, 1986. http://dx.doi.org/10.6028/nbs.ir.86-3395.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Offriamo sconti su tutti i piani premium per gli autori le cui opere sono incluse in raccolte letterarie tematiche. Contattaci per ottenere un codice promozionale unico!