Many data-intensive and distributed applications rely on low-latency and scalable key–value storage systems across the computing Continuum. Key–value storage systems typically use consistent hashing or hash slot-sha...
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Since in many finite element problems, lots of opera tions are repetitive on elements, it is of great interest to study methods that use this repetition in order to vec torize and parallelize the computation. Among th...
Since in many finite element problems, lots of opera tions are repetitive on elements, it is of great interest to study methods that use this repetition in order to vec torize and parallelize the computation. Among these ele ment by element methods we present a preconditioner for the conjugate gradient algorithm. We also present the results of computations run on an Alliant FX/8 machine.
The coupled-dipole method is widely used to calculate the light-scattering matrix S from arbitrary particles. An important parameter in the model is the size of the dipolar subunits. Usually a size of approximately 1/...
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The coupled-dipole method is widely used to calculate the light-scattering matrix S from arbitrary particles. An important parameter in the model is the size of the dipolar subunits. Usually a size of approximately 1/10 to approximately 1/20 of the wavelength of the incident light is sufficient for accurate calculations. However, it was noted that accurate S-34 calculations require much smaller dipolar subunits. We show that this conclusion is too pessimistic, by examining the sensitivity of the S-34 elements on surface roughness of spherical particles. Furthermore we give an example of an accurate S-34 calculation with dipolar subunits as large as 1/10 of the wavelength.
The choice of the reference velocities is a crucial task for Phase Shift Plus Interpolation (PSPI) migration algorithm. We propose an adaptive choice of the reference velocities, whose number and values are calibrated...
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An alternative convolutional approach to migration, combining important properties of both convolutional and PSPI algorithms in heterogeneous media, was explicitly designed inside the data-parallel programming model. ...
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Serverless computing is an emerging cloud computing paradigm with the goal of freeing developers from resource management issues. As of today, serverless computing platforms are mainly used to process computations tri...
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作者：
ZOMAYA, AYParallel Computing Research Group
Department of Electrical and Electronic Engineering The University of Western Australia Nedlands Perth Western Australia 6907 Australia
The computation of the dynamics plays a major role in many real-time robotic applications. The dynamics consist of a set of complex formulations that need to be computed at high sampling rates (i.e. hundreds or thousa...
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The computation of the dynamics plays a major role in many real-time robotic applications. The dynamics consist of a set of complex formulations that need to be computed at high sampling rates (i.e. hundreds or thousands of times) to facilitate real-time applications. This paper presents an inexpensive and efficient solution to this problem which employs networks of parallel processors. The dynamic equations are first functionally decomposed into a set of simple computational tasks. Then, the resulting tasks are distributed, via a suitable scheduling scheme, onto networks of parallel processors. The networks are constructed using general purpose T800 transputer chips. The speed and efficiency of the proposed method are demonstrated by a case study.
A simulation methodology for predicting the performance of sequential programs as well as data parallel (SPMD) programs on parallel and distributed platforms is presented. The proposed methodology comprises a paramete...
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A simulation methodology for predicting the performance of sequential programs as well as data parallel (SPMD) programs on parallel and distributed platforms is presented. The proposed methodology comprises a parameterised description of the applications as well as the target machines. An integrated simulation procedure estimates the time complexity of the (SPMD) application given a well-defined hardware platform and predicts the execution behaviour. The methodology has been actualised in terms of a toolset currently under development at the University of Amsterdam.
The Coupled Dipole method is used to simulate Elastic Light Scattering from arbitrary shaped particles. To facilitate simulation of relative large particles, such as human white blood cells, the number of dipoles requ...
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The Coupled Dipole method is used to simulate Elastic Light Scattering from arbitrary shaped particles. To facilitate simulation of relative large particles, such as human white blood cells, the number of dipoles required for the simulation is approximately 10(5) to 10(6). In order to carry out such simulations, very powerful computers are necessary. We have designed a parallel version of the Coupled Dipole method, and have implemented it on a distributed memory parallel computer, a Parsytec PowerXplorer, containing 32 Power PC-601 processors. The efficiency of the parallel implementation is investigated for simulations of model particles. Scattering by a sphere, modelled with 33552 dipoles, is simulated and compared with analytical Mie theory. Finally the suitability of the Coupled Dipole method to simulate Elastic Light Scattering from larger particles, such as white blood cells, is discussed.
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