high performance computing on graphics processing units: hgpu.org

We present a method to compute friction in a particle-based simulation of granular materials on GPUs and its data structure. We use Distinct Element Method to compute the force between particles. There has been a method to accelerate Distinct Element Method using GPUs, but the method does not compute friction. We implemented friction into the […]

This paper discusses a process of generating and rendering procedural clouds for 3D environments using programmable 3D graphics hardware. Cloud texture generation is performed using Perlin noise and turbulence functions. Our implementation is done in OpenGL supported GPUs with programmable vertex & fragment processing pipeline that supports OpenGL shading language (GLSL). We have performed a […]

We present a simple and efficient technique for out-of-core multi resolution construction and high quality visualization of large point datasets. The method introduces a novel hierarchical LOD data organization based on multi-way kd-trees that simplifies memory management and allows controlling the LOD tree’s height. The technique is incorporated in a full end-to-end system, which is […]

Nowadays, man can get a great number of 3D data sets from different sources is common in medical diagnosis but how to explore the information contents of these data sets is still a problem. One effective method is with computer aid rendering the volume. As the 3D datasets are usually in large scalar, the capability […]

By splitting a complex ray-casting process into different tasks performed on different processors, Voreen provides a lot of flexibility because users can intervene at different points during ray casting. Voreen’s object-oriented design lets users easily create customized processor classes that cooperate seamlessly with existing classes. A user-friendly GUI supports rapid prototyping of visualization ideas. We’ve […]

Many graph layouts include very dense areas, making the layout difficult to understand. In this paper, we propose a technique for modifying an existing layout in order to reduce the clutter in dense areas. A physically inspired evolution process based on a modified heat equation is used to create an improved layout density image, making […]

With a high accuracy, the Smith-Waterman local sequence alignment algorithm requires a very large amount of memory and computation, making implementations on common computing systems become less practical. In this paper, we present swGPUCluster – an implementation of the SmithWaterman algorithm on a cluster equipped with NVIDIA GPU graphics cards (called a GPU cluster). Our […]

Lattice QCD calculations were one of the first applications to show the potential of GPUs in the area of high performance computing. Our interest is to find ways to effectively use GPUs for lattice calculations using the overlap operator. The large memory footprint of these codes requires the use of multiple GPUs in parallel. In […]

This continuing exploration of GPU technology examines ATI Stream technology and its use in scientific and engineering applications.

A Graphics Processing Unit (GPU) based measuring system which is used for processing images from a camera to provide information about displacement is presented in this work. The proposed approach has been developed for measuring small movements of micro robotic systems based on synthetic IPMC (Ionic Polymer Metal Composites) materials using CUDA (Compute Unified Device […]

Projectors equipped with wide-angle lenses can have an advantage over traditional projectors in creating immersive display environments since they can be placed very close to the display surface to reduce user shadowing issues while still producing large images. However, wide-angle projectors exhibit severe image distortion requiring the image generator to correctively pre-distort the output image. […]

A low-cost excavator simulator has been developed in this paper for training human operators and evaluating control strategies for heavy-duty hydraulic machines. In such a system, the operator controls a virtual excavator by means of a joystick while experiencing realistic operating feelings through force feedback, graphical displays, and sound effects in virtual operating environments. A […]