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A novel approach is presented for fast generation of synthetic seismograms due to microseismic events, using heterogeneous marine velocity models. The partial differential equations for the three-dimensional (3-D) elastic wave equation have been numerically solved using the Fourier domain pseudo-spectral method which is parallelizable on the graphics processing unit (GPU) cards, thus making it faster...
Parallel programming has many benefits that can help developers and researchers to improve the performance of some algorithms to become more efficient in real life. This is especially true for systems involving medical images. Image segmentation for volume extraction is a famous segmentation process that takes long time to finish execution. In this paper, we consider a new version of the Fuzzy C-Means...
As a traditional application on various supercomputers, atmospheric modeling has long been suffering from the low performance efficiency. In this paper, we pick the 3D Euler equation solver (the most essential dynamic component for a non-hydrostatic atmospheric model) as the target application, and explore the maximum performance efficiency that can be achieved on CPU-GPU hybrid architectures. Besides...
This paper presents a phase-shift extraction and wavefront reconstruction method for two-step-only phase-shifting digital holography. Unlike previous methods for phase-shift extraction that requires at least two holograms plus object and/or reference wave intensities, the proposed method can retrieve the unknown phase-shift solely using two holograms without the need of recording object or reference...
Present multi-view display techniques are often based on the use of multi-pass algorithms, one per view usually besides an additional step for image compositing. Generally linearly dependent on the number of views, these approaches introduce a bias by incorrectly considering that depth information is located at the pixel level, while the sub-pixel level would be more suitable to improve the intrinsic...
This paper presents 5 different electromagnetic methods, asymptotic and exact, in 3 dimensions and in 2 dimensions, to simulate the radiation of an antenna in a U-shaped valley. The precision of the result and the calculation time are compared for each method.
A recent trend in modern high-performance computing environments is the introduction of powerful, energy-efficient hardware accelerators such as GPUs and Xeon Phi coprocessors. These specialized computing devices coexist with CPUs and are optimized for highly parallel applications. In regular computing-intensive applications with predictable data access patterns, these devices often far outperform...
Effective utilization of GPU processing capacity for scientific workloads is often limited by memory throughput and PCIe communication transfer times. This is particularly true for semi-analytic Fourier-domain computations in earthquake modeling (Relax) where operations on large-scale 3D data structures can require moving large volumes of data from storage to the compute in predictable but orthogonal...
3D modelling is very essential step in product design and animation and video games designing process. Most of the modelling softwares require GPU enabled system due to very large number of complex mathematical calculations like 3D vector arithmetic, complex equation solving, and large matrix multiplications etc. which are involved in 2D to 3D conversion algorithms which are used during the modelling...
This paper presents a mathematical model for predicting power consumption of a mobile device when it is rendering 3D graphics. The model is based on 3D primitives (triangles, render batches, texels), and hence is hardware agnostic. With the model, a complexity of any given 3D scene can be predicted already at a production phase without access to the actual target hardware. This paper describes how...
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