high performance computing on graphics processing units: hgpu.org

Global illumination provides a visual richness not achievable with the direct illumination models used by most interactive applications. To generate global effects, numerous approximations attempt to reduce global illumination costs to levels feasible in interactive contexts. One such approximation, reflective shadow maps, samples a shadow map to identify secondary light sources whose contributions are splatted […]

In a multi-projector display system, geometric calibration is usually time-consuming and tedious. In this paper, we propose a multi-projector tiled display method with geometry parameters estimation. The method is used for analytic curved surface, such as cylindrical or spherical shaped display. The calibration process is automatic by using computer vision techniques; and in order to […]

This paper introduces a new streamline placement and selection algorithm for 3D vector fields. Instead of considering the problem as a simple feature search in data space, we base our work on the observation that most streamline fields generate a lot of self-occlusion which prevents proper visualization. In order to avoid this issue, we approach […]

This work discusses an approach to utilize hierarchical multiprocessing in the context of medical image registration. By first organizing application parallelism into a domain-specific taxonomy, an algorithm is structured to target a set of multicore platforms.The approach on a cluster of graphics processing units (GPUs) requiring the use of two parallel programming environments to achieve […]

This paper proposes to perform reaction-diffusion on surface tiles. The square tiles fit nicely and cost-effectively in GPU memory, whereas we also apply distortion minimization on tiles so as to precisely reduce the unbalanced scale and resolution problem of chemicals in the reaction- diffusion. The interconnection nature of tiles accounts for the surface topology, and […]

This issue of CiSE is based on work presented at the US National Science Foundation workshop, Path to Petascale: Adapting Geo/Chem/Astro Applications for Accelerators and Accelerator Clusters, held at the US National Center for Supercomputing Applications (NCSA) in early 2009. The workshop was designed to raise awareness about the emergence of accelerator-based high-performance computing (HPC) […]

For the demands of mobile multimedia applications, a stream processor core is designed with 8.91 mm2 area in 0.18 mum CMOS technology at 50 MHz. Several techniques and architectures are proposed to achieve high performance with low power consumption. First of all, an optimized core pipeline is designed with 2-issue VLIW architecture to achieve the […]

Computational performance increasingly depends on parallelism, and many systems rely on heterogeneous resources such as GPUs and FPGAs to accelerate computationally intensive applications. However, implementations for such heterogeneous systems are often hand-crafted and optimised to one computation scenario, and it can be challenging to maintain high performance when application parameters change. In this paper, we […]

High-angular resolution diffusion imaging (HARDI) is a diffusion weighted MRI technique that overcomes some of the decisive limitations of its predecessor, diffusion tensor imaging (DTI), in the areas of composite nerve fiber structure. Despite its advantages, HARDI raises several issues: complex modeling of the data, nonintuitive and computationally demanding visualization, inability to interactively explore and […]

Logic simulation is the major verification technique used for electronic system designs. Speeding up logic simulation results in great savings and shorter time-to-market. We parallelize logic simulation using Graphics Processing Units (GPUs). We present a parallel cycle-based logic simulation algorithm that uses And Inverter Graphs (AIGs) as design representations. We partition the gates in the […]

In this article we explore the NVIDIA graphical processing units (GPU) computational power in cryptography using CUDA (Compute Unified Device Architecture) technology. CUDA makes the general purpose computing easy using the parallel processing presents in GPUs. To do this, the NVIDIA GPUs architectures and CUDA are presented, besides cryptography concepts. Furthermore, we do the comparison […]

We study the problem of using the GPU to compute the generalized Voronoi diagram (GVD) for higher-order sites, such as line segments and curves. This problem has applications in many fields, including computer animation, pattern recognition and so on. A number of methods have been proposed that use the GPU to speed up the computation […]