The peculiarities of the LuNA run-time subsystem implementation are considered. LuNA is the language and system of fragmented programming. The peculiarities are conditioned by the properties of numerical algorithms, t...
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ISBN:
(纸本)9783642231773
The peculiarities of the LuNA run-time subsystem implementation are considered. LuNA is the language and system of fragmented programming. The peculiarities are conditioned by the properties of numerical algorithms, to implementation and execution of which the LuNA is mainly oriented.
The paper treats the Multi-Objective Programming problem with a large composite set of (linear and nonlinear) objective functions, the domain of feasible solutions being defined by a set of linear equalities/inequalit...
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ISBN:
(纸本)9783642184659
The paper treats the Multi-Objective Programming problem with a large composite set of (linear and nonlinear) objective functions, the domain of feasible solutions being defined by a set of linear equalities/inequalities representing a large scale problem. One constructs a preferred solution i.e. a non-dominated solution chosen via extending the decision-making framework. A feasible approach, for this class of problems, is to use a solver for the Linear Programming problems and a solver for Multiple Attribute Decision Making problems in combination with parallel and distributed computing techniques based on a GRID configuration.
For typical assessment of applying machine learning or data mining techniques, accuracy and interpretability are usually the most important elements. However, when the analyst is faced with real contemporary big data ...
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ISBN:
(纸本)9783319992594;9783319992587
For typical assessment of applying machine learning or data mining techniques, accuracy and interpretability are usually the most important elements. However, when the analyst is faced with real contemporary big data problems, scalability and efficiency become crucial factors. parallel and distributed processing support is often an indispensable component of operational solutions. In the paper, we investigate the applicability of evolutionary induction of decision trees to large-scale data. We focus on the existing Global Decision Tree system, which searches the tree structure and tests in one run of an evolutionary algorithm. Evolved individuals are not encoded, so the specialized genetic operators and their application schemes are used. As in most evolutionary data mining systems, every fitness evaluation needs processing the whole training dataset. For high-dimensional datasets, this operation is very time consuming and to overcome this deficiency, two acceleration solutions, based on the most promising, latest approaches (NVIDIA CUDA and Apache Spark) are presented. The fitness calculations are delegated, while the core evolution is unchanged. In the experimental part, among others, we identify what are dataset dimensions which can be efficiently processed in the fixed time interval.
With parallel and distributed computing (PDC) now wide-spread, modern computing programs must incorporate PDC within the curriculum. ACM and IEEE Computer Society's Computer Science curricular guidelines have reco...
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ISBN:
(纸本)9781665435772
With parallel and distributed computing (PDC) now wide-spread, modern computing programs must incorporate PDC within the curriculum. ACM and IEEE Computer Society's Computer Science curricular guidelines have recommended exposure to PDC concepts since 2013. More recently, a variety of initiatives have made PDC curricular content, lectures, and labs freely available for undergraduate computer science programs. Despite these efforts, progress in ensuring computer science students graduate with sufficient PDC exposure has been uneven. This paper discusses the impact of ABET's revised criteria that have required exposure to PDC to achieve accreditation for computer science programs since 2018. The authors reviewed 20 top ABET-accredited computer science programs and analyzed how they covered the required PDC components in their curricula. Using their own institutions as case studies, the authors examine in detail how three different ABET-accredited computer science programs covered PDC using different approaches, yet meeting the PDC requirements of these ABET criteria. The paper also shows how ACM/IEEE Computer Society curricular guidelines for computer engineering and software engineering programs, along with ABET accreditation criteria, can cover PDC.
The physics goals of the next Large Hadron Collider run include high precision tests of the Standard Model and searches for new physics. These goals require detailed comparison of data with computational models simula...
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The physics goals of the next Large Hadron Collider run include high precision tests of the Standard Model and searches for new physics. These goals require detailed comparison of data with computational models simulating the expected data behavior. To highlight the role which modeling and simulation plays in future scientific discovery, we report on use cases and experience with a unified system built to process both real and simulated data of growing volume and variety.
This paper evaluates dependability of parallel differential evolutionary particle swarm optimization (DEEPSO) based voltage and reactive power control (Volt/Var Control: VVC). Considering large penetration of renewabl...
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ISBN:
(纸本)9781467388481
This paper evaluates dependability of parallel differential evolutionary particle swarm optimization (DEEPSO) based voltage and reactive power control (Volt/Var Control: VVC). Considering large penetration of renewable energies and deregulated environment of power systems, VVC is required to realize faster computation to larger-scale problems and one of the solutions for the problem is applications of parallel and distributed computing. Since power system is one of the infrastructures of social community, not only fast computation, but also sustainable control (dependability) is strongly required for VVC. The simulation results with IEEE 118 bus systems indicate that parallel DEEPSO is superior to parallel PSO and parallel differential evolution (DE) from the dependability point of view.
In distributed storage, dynamic loads usually cause a huge burden such as hot-spot and unblance region problems. In this paper, we focus on the problems of dynamic unbalance loads in distributed database HBase. Firstl...
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ISBN:
(纸本)9781728162515
In distributed storage, dynamic loads usually cause a huge burden such as hot-spot and unblance region problems. In this paper, we focus on the problems of dynamic unbalance loads in distributed database HBase. Firstly, we propose a new intelligent load balance framework to support the collection and analysis of dynamic load information. Then, two efficient load balance strategies are proposed to solve hot-spot problem and unbalance region problem. Finally, we evaluate the strategies on HBase using real-world big data on distributed clusters. Compared to the existing balance strategies, the proposed load balance strategies can make more effective use of the resources and reduce the response time for large dynamic loads.
Explosive growth in multiprocessor computing and the pervasive nature of multicore processors has not only made multithreading and related topics such as parallelism, concurrency, synchronization, etc. an essential pa...
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ISBN:
(纸本)9781728174457
Explosive growth in multiprocessor computing and the pervasive nature of multicore processors has not only made multithreading and related topics such as parallelism, concurrency, synchronization, etc. an essential part of any undergraduate Computer Science curriculum, it has also lead to the addition of newer constructs to support multithreading in many languages. Not only is it important to motivate student interest in this topic, it is important that they are also educated in current methods used in industry. This can mean an increase in material that needs to be covered. Because of the increase in scope of a CS education, teaching topics in parallel and distributed computing in a hands-on manner is challenging, thus it is valuable for educators to explore different methods of educational delivery in order to best engage their students within the limits of curriculum timelines. The actor model is immensely popular in industry and runs some of the most important software today. In this paper, we describe how we are using Actors as a significant part of the multithreading coverage at the CS2 level, for first-year computer science majors. We also describe a semesterlong project that involves the use of these concepts to help solidify student understanding and present student feedback on the project and approach.
In this paper. we propose a process grid free algorithm for a massively parallel dense symmetric eigensolver with a communication splitting multicasting algorithm. In this algorithm, a tradeoff exists between speed an...
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ISBN:
(纸本)9783642193279
In this paper. we propose a process grid free algorithm for a massively parallel dense symmetric eigensolver with a communication splitting multicasting algorithm. In this algorithm, a tradeoff exists between speed and memory space to keep the Householder vectors. As a result of a performance evaluation with the T2K Open Supercomputer (U. Tokyo) and the RX200S5, we obtain the performance with 0.86x and 0.95x speed-downs and 1/2 memory space compared to the conventional algorithm for a square process grid. We also show a new algorithm for small-sized matrices in massively parallel processing that takes an appropriately small value of p of the process grid p x q. In this case, the execution time of inverse transformation is negligible.
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