high performance computing on graphics processing units: hgpu.org

A low-power and high-performance 4-way 32-bit stream processor core is developed for handheld low-power 3-D graphics systems. It contains a floating-point unified matrix, vector, and elementary function unit. By exploiting the logarithmic arithmetic and the proposed adaptive number conversion scheme, a 4-way arithmetic unit achieves a single-cycle throughput for all these operations except for the […]

We present a technique for the illustrative rendering of 3D line data at interactive frame rates. We create depth-dependent halos around lines to emphasize tight line bundles while less structured lines are de-emphasized. Moreover, the depth-dependent halos combined with depth cueing via line width attenuation increase depth perception, extending techniques from sparse line rendering to […]

Video visualization is a computation process that extracts meaningful information from original video data sets and conveys the extracted information to users in appropriate visual representations. This paper presents a broad treatment of the subject, following a typical research pipeline involving concept formulation, system development, a path-finding user study, and a field trial with real […]

Quantitative trading requires a lot of computing power in order to analyze derivatives prices and financial microstructure. We will describe different ways to use parallel computing that are used within a proprietary trading firm. We will discuss in-house tools that we developed in order to quickly transcribe mathematical concepts into working parallel implementation to develop […]

This paper presents a computer simulator for the CAFADIS camera. CAFADIS is a patented camera (PCT/ES2007/000046) that measures wave-front phases and 3D distances under different scenarios (from microns to kilometres), using highly specialised electronic technology, namely Graphics Processing Units (GPUs) and Field Programmable Gate Arrays (FPGAs). Since 3DTV is one of the most important applications […]

The notion of virtual machine has permeated every aspect of computing systems, as witnessed by the ever growing set of virtual execution systems targeted by programming languages such as Java, C#, Perl and Python just to mention few of them. Virtual machines are appreciated not only because of portability of computer programs across different architectures; […]

Virtual machines emerged during the 90s as the platform for developing frameworks and applications, offering large base class libraries, dynamic loading, and reflection. The design of these machines was influenced by the then dominant idea that processors would have maintained a Von-Neumann model while hiding non-Von Neumann aspects in their internal structure. Recently Graphics Processing […]

This paper describes an approach to the approximation of Loop subdivision surfaces for real-time rendering. The approach consists of two phases, which separately construct the approximation geometry and the normal field of a subdivision surface. It first exploits quartic triangular Bezier patches to approximate the geometry of the subdivision surface by interpolating a grid of […]

This article presents an optimized algorithm for Nonnegative Tensor Factorization (NTF), implemented in the CUDA (Compute Uniform Device Architecture) framework, that runs on contemporary graphics processors and exploits their massive parallelism. The NTF implementation is primarily targeted for analysis of high-dimensional spectral images, including dimensionality reduction, feature extraction, and other tasks related to spectral imaging; […]

Driver assistance helps save lives. Accurate 3D pose is required to establish if a traffic sign is relevant to the driver. We propose a real-time system that integrates single view detection with region-based 3D tracking of road signs. The optimal set of candidate detections is found, followed by AdaBoost cascades and SVMs. The 2D detections […]

Recent advances in computing technology has brought massively parallel computing power to desktop PCs. As multi-core processor technology becomes mature, a new front in parallel technology based on graphics processors has emerged. A massively parallel 2D-TLM algorithm for NVIDIA advanced graphics processors has been developed. The proposed parallel computing paradigm can be adopted straightforwardly to […]

We describe an approach to render massive urban models. To prevent a memory transfer bottleneck we propose to render the models from a compressed representation directly. Our solution is based on rendering crude building outlines as polygons and generating details by ray-tracing displacement maps in the fragment shader. We demonstrate how to compress a displacement […]